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Hudson Terraplane K 1934 Mechanical Procedure Manual

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  • Page 3: Section 1 Page 1

    Hudson built cars through careful and efficient service. To these men belong much credit for the reputation of Hudson built products and this manual is therefore dedicated to them, The Hudson Terraplane Service Men.
  • Page 4 The tools are of highest quality and are sold direct by the ing information on changes which affect procedure in ser- tool manufacturer to make them available to Hudson and vicing. Terraplane Distributors and Flat Rate Dealers at minimum cost.
  • Page 5 MECHANICAL PROCEDURE MANUAL Page 1 SECTION 2 LUBRICATION Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 7 In selecting the oil to be Except for the above, the lubricant in the transmis- supplied to Hudson and Terraplane owners, consult the sion and differential should be drained and replaced chart and select a viscosity which will insure starting at...

  • Page 8: Section 2 Page 4 Mechanical Procedure Manual

    These charts should be used as a guide in lubricating Wall charts are available from the factory covering the the various Hudson and Terraplane models to which they complete lubrication of the chassis and body. Smaller apply and also as an aid in selling lubrication service to reproductions of these charts are included in this section your customers.

  • Page 9: Engine Tune-Up

    Page 1 MECHANICAL PROCEDURE MANUAL SECTION 3 ENGINE TUNE-UP Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 11 SECTION 3 MECHANICAL PROCEDURE MANUAL Page 3 ENGINE TUNE-UP f. Constant vibration of gauge hand—early The Engine Tune-up procedure has been divided into ignition (Test 15). two groups. The first is the over-all check-up to determine C IGNITION TEST. the need for a tune-up and to help the service salesman a.
  • Page 12 SECTION 3 Page 4 MECHANICAL PROCEDURE MANUAL...
  • Page 13 SECTION 3 MECHANICAL PROCEDURE MANUAL Page 5 2. Spark Plugs Lower end of plug porcelain should be a light brown color. Glossy black porcelain—oil deposit— check oil and compression. Dull black porcelain—deposit—rich burning. Dead gasoline mixture—poor white color—over-heated plug—use cooler type plug. Clean plug with sand blast— adjust points to .025"gap.

  • Page 14: Section 3 Page 6 Mechanical Procedure Manual

    SECTION 3 Page 6 MECHANICAL PROCEDURE MANUAL Always use Genuine Hudson and Terraplane battery cables and ground straps to insure capacity for carrying amperage for starting without voltage loss. 6. Battery Ground Strap Connect voltmeter from battery positive terminal post (not ground strap terminal) to chassis frame.
  • Page 15 SECTION 3 MECHANICAL PROCEDURE MANUAL Page 7 8. Generator Charging Rate Connect ammeter and voltmeter as shown. Ground field terminal (F). With ammeter reading 15 amps. take voltage at generator (A) terminal and at starting motor terminal—more than 0.5 volts difference in voltages indi- cates high resistance in the charge control or connections.
  • Page 16 SECTION 3 Page 8 MECHANICAL PROCEDURE MANUAL 13. High Tension If regular spark is not obtained in test 12, remove cable from distributor central terminal and connect tester to cable and distributor. Close tester gap and run engine at idle speed. Open gap to 7 M. M. and note spark. Remove cable from coil and connect tester direct to coil and distributor.
  • Page 17 SECTION 3 MECHANICAL PROCEDURE MANUAL Page 9 16. Fuel Pump Remove glass sediment chamber and clean. Clean screen 18. Climatic Control or replace. Remove cover—Clean screen or replace. Check choke valve for free movement. Choke should open from own weight when cover is removed.
  • Page 18 SECTION 3 MECHANICAL PROCEDURE MANUAL 20. Final Tuning Thoroughly warm engine. Adjust throttle stop screw for 7 M. P. H. Attach vacuum gauge to windshield wiper connection. Turn carburetor idle adjusting screws to seat and back out turn. Start engine. Turn one idle screw until maximum gauge reading is obtained then turn other for maximum steady reading.
  • Page 19 SECTION 3 MECHANICAL PROCEDURE MANUAL Page 11 23. Metering Rods (Duplex) Remove metering rods and insert gauges (2.359"). Loosen rocker arm set screw (13) and turn metering rod arm until pin rests on seats of gauges. Tighten set screw.
  • Page 20 SECTION 3 Page 12 MECHANICAL PROCEDURE MANUAL 24. Anti-Percolating Valve (Single) With a .030" diameter feeler inserted beside the throttle and in line with the idle port a clearance of from .005" to .015" should exist between the anti- percolating valve arm and the pump arm.
  • Page 21 SECTION 3 MECHANICAL PROCEDURE MANUAL Page 13 29. Mileage Test The most conclusive test after a tune-up is a performance and mileage test on the road. Acceleration in high gear from 10 to 40 miles, checked with a stop watch, tells you if you have obtained maximum power throughout the normal speed range.

  • Page 23: Carburetor And Fuel Pump

    Page 1 MECHANICAL PROCEDURE MANUAL SECTION 4 CARBURETOR AND FUEL PUMP Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...

  • Page 25: Carburetor Operation

    Venturi Choke Control Fast Idle Percolator Retard Dual 1934 Terraplane KS Single Terraplane K Single Terraplane KU Single Hudson 8 Single 1935 Terraplane Special Single Terraplane De Luxe Single Hudson 6 Single Hudson 8 Single 1936 Terraplane De Luxe Single...

  • Page 26: Section 4 Page 4 Mechanical Procedure Manual

    (The metering rod used on the Hudson 8 has only two steps.) The position of the metering rod in respect to throttle opening is very important. If the change from one stop to the...
  • Page 27 SECTION 4 MECHANICAL PROCEDURE MANUAL Page 5 opened, the discharge is continued for a number of seconds by the air compressed between the plunger and the fuel. When the pump is not delivering fuel a disc check valve, in the upper passage plug above the accelerating jet, opens, allowing air to he drawn from the float chamber, preventing a vacuum in the pump passages so that no fuel can be delivered from the accelerating pump jet except by the pump...
  • Page 28 SECTION 4 MECHANICAL PROCEDURE MANUAL Page 6 stem of the plunger and also through the small hole in the stem just below the check valve, filling the cylinder below the plunger full of gasoline. When the pressure is relieved from the accelerator pedal, the throttle spring attempts to close the throttle, however, the check ball goes to its seat and the speed of closing of the throttle is retarded as the gasoline below the plunger can escape only through the small hole in...
  • Page 29 (3) Remove pin spring and connector link that connects shavings cut off the parts. The Hudson Tune-tip accelerating plunger to operating arm. Kit J-819-B includes four special screw drivers to (4) Remove both attaching screws on fast idle bar.
  • Page 30 SECTION 4 MECHANICAL PROCEDURE MANUAL Page 8 (13) Remove bowl cover attaching screw, bowl (27) Revolve choke piston lever and shaft assembly (J, Figures 407-9-10) to the left and cover, and lift off bowl cover gasket. Remove pump arm remove Bakelite choke piston (K, Figures 409 and and countershaft assembly by revolving one-half turn on 410).
  • Page 31 SECTION 4 MECHANICAL PROCEDURE MANUAL Page 9 strainer (P, Figures 407, 409 and 410) in position covering slot (W, (42) If cold engine has a tendency to load or run rich during warm-up period, revolve housing clock-wise one Figure 410) in piston plate. mark at a time until desired results are secured.
  • Page 32 SECTION 4 MECHANICAL PROCEDURE MANUAL ball against the seat. Ball should work freely. If they leak or ball sticks, replace them. Install tight so they seat in casting. Be sure copper washer is seated in casting and then install ball check strainer in plug and plug in casting. If strainer is clogged or damaged replace it.
  • Page 33 SECTION 4 MECHANICAL PROCEDURE MANUAL Page 11 to carburetor specifications of 3/8" (Figure 415). Be sure the gauge rests on the cover gasket flange. Adjustment is ob- tained by bending the lip on float arm which contacts nee- dle. Do not bend on float in adjusting it as damage will result.
  • Page 34 SECTION 4 MECHANICAL PROCEDURE MANUAL Page 12 Anti-Percolating Valve Adjustment (1936 and 1937—Single) (71) Install anti-percolating plug and rocker arm assembly using 7/16" wrench. To adjust anti- percolator: set throttle valve at .030" opening between edge of valve and bore of carburetor on same side as port hole.
  • Page 35 (88) Pack dust cover attaching screw hole in bowl cover with graphite grease and install dust cover and attaching screw and lock washer. Carburetor is now ready for installation on manifold. HUDSON AND TERRAPLANE DUAL CARBURETORS—1937 To Disassemble (89) Remove carburetor from motor. Use Tune- up Kit J-819-B.

  • Page 36: 94) Remove Spring Retainer And Connector Rod

    SECTION 4 MECHANICAL PROCEDURE MANUAL Page 14 Figure 424 spring to remove throttle connector rod (12). (Figure 422.) (95) Loosen clamp screw (13) on metering rod arm (14). Remove pump arm (15) and countershaft assembly. Meter- ing rod arm (14) and anti-percolator arm (16) and screw assembly will be free for removal.
  • Page 37 SECTION 4 MECHANICAL PROCEDURE MANUAL Page 15 (105) Remove both nozzle plugs (29) and gasket assem- blies (Figure 425). (106) Remove both nozzle retainer plugs (32) and nozzles (31) (Figure 426). Nozzles are just pressed in and are held by retainer plugs; use nozzle puller included in J-819-B Kit. (107) Remove the four flange attaching screws (32) (two shown) and lock washers to remove body flange assembly (108) Remove body flange gasket and both idle passage...

  • Page 38: Blies (Figure

    SECTION 4 MECHANICAL PROCEDURE MANUAL Page 16 (126) Install idle passage plugs (47). Install idle adjusting screws (45) and springs (46) (Figure 429). If idle adjusting screws are burred, replace. Adjust idle screws IA to '..Y1 turns open from seat. (127) Install new low speed jet (34) and gasket assemblies (Figure 427).
  • Page 39 SECTION 4 MECHANICAL PROCEDURE MANUAL Page 17 (132) Install both metering rod jets (26) and gasket assemblies (Figure 424). If metering rod shows wear, re- place metering rod jets and metering rods. Always replace both metering rods and jets; never use new rod with old jet or vice versa.
  • Page 40 SECTION 4 MECHANICAL PROCEDURE MANUAL Page 18 either gauge. Tighten anti-percolator arm screw (13) with metering rod arm in this position. E. Remove gauges and replace metering rod discs, retainer (17) and screw. Install metering rods, spring and pin spring and connect metering rod spring.
  • Page 41 SECTION 4 MECHANICAL PROCEDURE MANUAL Page 19 Tune-up Kit as shown in Figure 433, while holding throttle float lever will raise float level. Float level may be reset by bending lip of float lever down to raise float level or bending closed.
  • Page 42 SECTION 4 MECHANICAL PROCEDURE MANUAL Page 20 CLIMATIC CONTROL SERVICING INSTRUCTIONS The climatic control used on the Duplex Carburetor is identical in principle and operation with those used on the single carburetors. The design differs slightly, particularly in the interconnecting linkage. Figure 436 shows the unit with the cover and thermostatic coil removed showing the various parts.
  • Page 43 SECTION 4 MECHANICAL PROCEDURE MANUAL Page 21 Turn shaft with lever 14 turn counter-clockwise from verti- cal position and install bakelite choke piston (I) on lever and turn shaft so that piston enters housing. (162) Install choke valve assembly, using new choke valve screws (G), making certain that valve does not bind or rub on inside of air horn bore.

  • Page 44: Air Cleaner

    2.795 1937 71 3/8" 1/4 to 1 75-189 75-201 2.795 1937 72 15/64" 1/4 to 3/4 75-192 75-198 2.359 Hudson 1934 LT and LL 3/8" 3/8 to 1 75-107 75-127 2.795 1934 LTS 3/8" 3/8 to 1 75-120 75-127 2.795 1935 GH (6 cylinder) 3/8"...

  • Page 45: Fuel Pump

    SECTION 4 MECHANICAL PROCEDURE MANUAL Page 23 3. Remove the oil from the cleaner body and wash thoroughly— inside and out. 4. Refill with one pint of S.A.E. 50 engine oil. Use lighter oil in cold weather. 5. Wipe off filter unit and reinstall. 6.
  • Page 46 1937 Hudson and Terraplane models. The fuel (upper) sec- Operation tion functions similarly to the other pumps. The fuel pump used on all 1934, 35 and 36 Hudson and Terraplane models shown in Figure 445 is the series "R" OPERATION OF VACUUM SECTION A.C.
  • Page 47 SECTION 4 MECHANICAL PROCEDURE MANUAL Page 25 every stroke of the rocker arm (B). When the manifold The gas per mile gaugeis tool number J-750-T, while the fuel pump testing gauge (with fittings) is tool number J-891. vacuum is greater than the vacuum created by the pump, the air will flow from the windshield wiper through both valves Fuel Pump Testing of the pump, and the operation of the wiper will be the same...
  • Page 48 SECTION 4 MECHANICAL PROCEDURE MANUAL Page 26 When the engine is running at idling speed, the fuel Note: The time allowed in (2) is based on the pump deliver- pumped direct to the carburetor can be disregarded as the ing 10 gallons per hour and the engine using four gallons per quantity is very small.
  • Page 49 SECTION 4 MECHANICAL PROCEDURE MANUAL Page 27 Vacuum Pump Trouble Chart Condition Evidenced By Remedy Vacuum pump not operating Slow action of windshield wiper at Check wiper valve lines and fittings. If high speed or when accelerating trouble is not located, disassemble vacuum pump unit and check valves and diaphragm Punctured vacuum pump dia-...
  • Page 50 SECTION 4 MECHANICAL PROCEDURE MANUAL Page 28 3. Install cover screws and lockwashers, tightening only until spring but fits properly inside of it. they barely engage lockwashers. Cover Assembly 4. Release rocker arm, which will place the diaphragm in its 1.
  • Page 51 SECTION 4 MECHANICAL PROCEDURE MANUAL Page 29 4. Place fibre gasket on valve plug and then place stem of pump unit in an inverted position in bench vise. valve plug into the coil spring and tighten plug securely. Be 2. Place diaphragm assembly in position making sure that certain that the stem of the valve plug does not distort the valve slot in pull rod engages hooks on both vacuum links properly spring but fits properly inside of it.
  • Page 52 SECTION 4 MECHANICAL PROCEDURE MANUAL Page 30 Fuel Pump Installation pump will give greater reserve and supply fuel under condi- tions which may cause vapor lock in the smaller pumps. It is important that the correct gasket and spacer be used The 1937 Combination Fuel and Vacuum Pump can not be between the crankcase and pump to obtain the correct stroke.

  • Page 53: Cooling System

    MECHANICAL PROCEDURE MANUAL Page 1 SECTION 5 COOLING SYSTEM Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 55 SECTION 5 MECHANICAL PROCEDURE MANUAL Page 3 COOLING SYSTEM The cooling system is of the pump circulation type using a centrifugal pump mounted at the front of the engine and driven by a "V" belt from the crankshaft. The fan blades are carried on the front of the pump shaft.

  • Page 56: Section 5 Page 4 Mechanical Procedure Manual

    Cooling System Service straight edge laid across these pulleys. (See Figure 503). It is recommended that Hudson Rust and Corrosion Inhibitor 3. Tighten adjusting arm bolt nut and generator mounting be used in the cooling system at all times except when an bracket nut.
  • Page 57 SECTION 5 MECHANICAL PROCEDURE MANUAL Page 5 Figure 506—Cutting Burr Off Shaft Rebuilding 1934 and 1935 Pumps Water pump reconditioning tool set No. J-694 is shown in Figure 505. This set provides an easy means of disassembling and reas- sembling the water pump without damage to parts and insures proper alignment of bearings after rebuilding.
  • Page 58 SECTION 5 MECHANICAL PROCEDURE MANUAL Page 6 Figure 510—Pressing Front Bearing Out Figure 508—Pressing Rear Bearing Out Assemble large pilot (1) to end of screw. Tighten screw front bearing. Figure 510. and force shaft through impeller. Remove impeller and shaft. With all parts now removed an inspection should be made Figure 507.
  • Page 59 SECTION 5 MECHANICAL PROCEDURE MANUAL Page 7 Figure 514— Pressing Impeller on Shaft 15. Put front thrust washer on pump shaft and insert shaft through bearings from front. Clamp shaft in assembly with large C clamp as shown in Figure 514, or by placing in jaws of vise. (If vise is used, protect machined face of pump housing against damage.) Put rear thrust washer and impeller on shaft.
  • Page 60 SECTION 5 MECHANICAL PROCEDURE MANUAL Page 8 Figure 518—3-788 Water Pump Repair Set The space in the housing between the bearings is a grease reservoir to give a continuous supply of lubricant to the bearings. The grease fitting is provided with a cut-off which closes the fitting when the reservoir is full so that the high pressure of which the grease gun is capable cannot be built up in the housing, thus eliminating the possibility of grease being...
  • Page 61 SECTION 5 MECHANICAL PROCEDURE MANUAL Page 9 Figure 522—Removing Front Bearing 24. Proceed to cut the burr end from the impeller Figure 520—Removing Shaft shaft, Figure 519, turning the cutter with an end wrench and applying a slight pressure with the thumb Disassembling screw at the same time.
  • Page 62 SECTION 5 MECHANICAL PROCEDURE MANUAL 29. Remove the oil seal retaining ring and disassemble oil 29. Remove the oil seal retaining ring and disassemble oil seal. Check the oil seal and thrust washer and assemble in seal. Check the oil seal and thrust washer and assemble in order;...
  • Page 63 MECHANICAL PROCEDURE MANUAL Page 1 SECTION 6 ELECTRICAL Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 65 SECTION 6 MECHANICAL PROCEDURE MANUAL Page 3 ELECTRICAL STARTING, LIGHTING AND IGNITION are badly worn the unit should be removed for bench repairs. The commutator end bearings are absorbent bronze plain While the starting, lighting and ignition units will operate bearings while the drive end has a ball hearing.
  • Page 66 SECTION 6 MECHANICAL PROCEDURE MANUAL Page 4 graduations to read 1/5th volt and amperage graduations to read M ampere is absolutely essential to make electrical tests. The leads to the ammeter should be of at least No. 12 stranded wire and as short as possible. A variable rheostat for inserting a resistance in a circuit is also very useful.
  • Page 67 SECTION 6 MECHANICAL PROCEDURE MANUAL Figure 606 Charging Circuit (with Two Step Regulator Page 5 After assembling, the generator should be given a complete bench test before being installed on the car. While testing, set Figure 608—Distributor (8 Cyl.) the third brush for the correct maximum output. (See specifica- for refacing or adjustment.

  • Page 68: Starting Motors

    SECTION 6 MECHANICAL PROCEDURE MANUAL Page 6 The distributor advance curve can be retarded by bending the spring lugs outward and advanced by bending the lugs inward. Some of the distributors have what is known as a dog leg curve whereby a quick advance is obtained during the lower speeds and a more gradual advance at the higher speeds.
  • Page 69 SECTION 6 MECHANICAL PROCEDURE MANUAL Page 7 BENDIX STARTER DRIVE Failure of the Bendix drive to engage the flywheel gear in cold weather indicates the presence of gummy dirt on the screw threads of the Bendix Drive, which must be cleaned off in the following manner: Press the starter button and release quickly.
  • Page 70 SECTION 6 MECHANICAL PROCEDURE MANUAL Page 8 sanding to assure at least a 75% bearing on the commutator and circuits the source of current supply is the battery. When making these tests one side of the voltmeter should then run in for a sufflcient length of time to obtain a perfect fit be connected to a clean, unpainted ground and the other side before any attempt is made to set the generator output.
  • Page 71 TWO-CHARGE REGULATORS The TC two-charge regulators which are standard equipment on certain models (See Equipment Chart ) of both Hudson and Terraplane cars can be checked with an accurate reading volt- ammeter having a rheostat to control the charging circuit volt- age.
  • Page 72 There are three distinctly different generator systems to deal breaker points at the left of the unit. When these points are with on Hudson and Terraplane cars. All use an adjustable third closed the generator characteristics are exactly the same as brush generator, but in some cases with no external regulation, described for the generator without external control.
  • Page 73 SECTION 6 MECHANICAL PROCEDURE MANUAL Page 9B to the ability of the load and battery to absorb current at the If the engine is started with the polarity reversed, the generator will produce a current flowing in the same direc- maximum available voltage.

  • Page 74: Section 6 Page 10 Mechanical Procedure Manual

    SECTION 6 MECHANICAL PROCEDURE MANUAL Page 10...
  • Page 75 SECTION 6 MECHANICAL PROCEDURE MANUAL Page 11 GAR-4701-6 GENERATOR SPECIFICATIONS GBK-4601-2 GENERATOR SPECIFICATIONS ROTATION C.W.D.E. ROTATION C,W.D.E. VOLTS VOLTS CONTROL 3rd Brush and Regulator.* CONTROL 3rd Brush and Regulator. FUSE None or 5 ampere in regulator. FUSE 5 Ampere in Regulator. BRUSH SPRING Minimum 18 to Maximum 22 BRUSH SPRING...
  • Page 76 SECTION 6 MECHANICAL PROCEDURE MANUAL Page 12 GCJ-4804A-1 GENERATOR SPECIFICATIONS GBK-4602-1 GENERATOR SPECIFICATIONS ROTATION C,W.D.E. ROTATION C,W.D.E. VOLTS VOLTS CONTROL Std. Brush CONTROL 3rd Brush and Regulator. FUSE None FUSE 5 Ampere in Regulator. BRUSH SPRING Minimum 27 to Maximum 53 BRUSH SPRING Minimum 18 to Maximum 22 TENSION...
  • Page 77 SECTION 6 MECHANICAL PROCEDURE MANUAL Page 13 IGP-4001A-B DISTRIBUTOR SPECIFICATIONS ROTATION R.H. CYLINDERS ROTATION R.H. CONTROL Automatic. CYLINDERS TIMING Adjustable thru range of 360° by looening CONTROL Automatic hold down arm clamp screw. TIMING Adjustable thru range of 360° by loosening END PLAY In the drive shaft after coupling is hold down arm clamp screw...
  • Page 78 SECTION 6 MECHANICAL PROCEDURE MANUAL Page 14 BREAKER .020" Check with wire feeler BREAKER POINT POINT GAP gauge. SPRING TENSION 16 to 20 ounces. See text. BREAKER POINT 16 to 20 ounces. See text. LUBRICATION See text SPRING TENSION I GB-4301A. ADVANCE IGW-4012A LUBRICATION...
  • Page 79 SECTION 6 MECHANICAL PROCEDURE MANUAL Page 15 The Electric Gauge consists of two units, the Sending Unit and the BATTERY Receiver Unit. The following diagrams show the major parts of The battery on 1934-35 and 36 models is located under the floor each unit and the principle of operation is as follows: of the car and can be reached for inspection or removal by turning When the gasoline or radiator upper tank is empty the two contacts...

  • Page 80: Water Temperature Gauge

    SECTION 6 MECHANICAL PROCEDURE MANUAL Page 16 As the temperature controlled bi-metal strip is warmed by the water in the cooling system it bends as shown in Figure 619 toward the heated bi-metal strip so that more heat is required from the heating coil to open the contact.

  • Page 81: Accuracy Test

    _________________________________________ HEADLAMPS The headlamps on all models are mounted on a single stud 1934 Hudson and Terraplane with a ball and socket to permit aiming and aligning of the The headlamps use double filament bulbs so that each lamps in all directions.
  • Page 82 Page 18 The left lamp of the Terraplane uses the high beam for switch. passing while the right lamp of the Hudson uses the high beam. 1936 and 1937 Hudson and Terraplane 1935 Hudson and Terraplane Double filament bulbs are used, however, the arrangement...
  • Page 83 SECTION 6 MECHANICAL PROCEDURE MANUAL Page 19 4. Measure one-half the distance between the lamps to each side of B and draw vertical lines C and D through these points. These represent the vertical center lines of the headlamps. 5. With car carrying full passenger load, cover the left headlamp, loosen mounting stud nut and aim right headlamp high beam to give the pattern illustrated for the car being tested.
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  • Page 95 Page 1 MECHANICAL PROCEDURE MANUAL SECTION 7 ENGINE Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 97 3 inches and stroke of 5 inches. rubber deteriorates when replacement of the rubber is neces- The Hudson 8 cylinder engine has a bore of 3 inches and a sary. Oil should never be put on the dampener as this will stroke of 4 inches.
  • Page 98 SECTION HUDSON-TERRAPLANE Page 4...
  • Page 99 SECTION 7 MECHANICAL PROCEDURE MANUAL Page 5 Main Bearings The lower halves of the main bearings are secured in the caps with screws while the upper halves of the bearings are secured in the case. Bearing adjustments can be made by removing the bearing caps and removing shims from the pack on top of the bearing cap.

  • Page 100: Section 7 Page 6 Hudson-Terraplane

    SECTION 7 HUDSON-TERRAPLANE Page 6 A flapper valve is located on the bottom of the oil return tube to prevent oil from being thrown up the tube and out of the rear main bearing. When the reservoir is setting level, this valve should be slightly open.
  • Page 101 SECTION 7 MECHANICAL PROCEDURE MANUAL Page 7 This later design was adopted to get the rings further away from the intense heat of combustion so that the oil control is obtained at a point where the oil is more viscous and easier to regulate.
  • Page 102 SECTION 7 HUDSON-TERRAPLANE Page 8 alignment is obtained when both dial hands register with the scribed lines. 6. If the indicators do not register with the scribed lines, pull the top of the rod away from the fixture and bend or twist with the HM-3R bending bar as shown in Figure 711.
  • Page 103 SECTION 7 MECHANICAL PROCEDURE MANUAL Page 9 the ring are equally important. The rings are cut and notched to accept the pin so that the clearance on the pin is equal to the gap between the ends of the ring (Figure 713). In other words, if the ring is compressed so that the ends come together there will be no clearance on the pin.
  • Page 104 SECTION 7 HUDSON-TERRAPLANE Page 10 PISTON AND RING FITTING TABLE Cylinder Piston Piston Ring Size Code Code Size 3.000 3.000 3.0005 3.000 3.001 3.000 3.0015 3.000 3.002 3.000 3.0025 3.000 3.004 3.003 3.005 3.005 3.010 3.010 3.0105 3.010 3.011 3.010 3.0115...
  • Page 105 SECTION 7 MECHANICAL PROCEDURE MANUAL Page 11 5. Measure pull required to remove feeler gauge with spring 1. Remove the tappet chamber cover from the right side of scale. Don't guess—a thousandth of an inch variation will the engine. change the pull on the feeler only a few pounds. 2.
  • Page 106 8 cylinder Exhaust-1-4-5-8-9-12-13-16 Engine Lubrication The Hudson Duo-Flo system of lubrication is very simple and positive. The double acting piston and drive shaft are the only moving parts and these move at only '/12 engine speed insuring low wear and long life.
  • Page 107 SECTION 7 MECHANICAL PROCEDURE MANUAL Page 13 Figure 720—Engine Lubrication The pump can be removed by disconnecting the inlet and Oil Check Valve and Signal outlet lines and removing the two mounting cap screws. The purpose of the oil check valve is simply to build up To disassemble the pump: enough pressure to operate the dash signal to indicate oil flow.
  • Page 108 "S" (summer) only when the temperatures are consistently above 100° F. All other Terraplane models and all other Hudson models are Figure 722—Hudson 8 Oil Reservoir fitted with an automatic heat control valve which is controlled Figure 720 shows the path of the oil from the pump to both according to the under hood temperature by a thermostatic coil.
  • Page 109 SECTION 7 MECHANICAL PROCEDURE MANUAL Page 15 Figure 724 shows the method of installation. The materials required are included in Intake Manifold Drip Pipe Kit Number 152002. Engine Mounting The engine is supported on two rubber cushions at the ends of the front engine support plate and a single rubber cushion under the front of the transmission case.
  • Page 110 MECHANICAL PROCEDURE MANUAL Page 1 SECTION 8 CLUTCH Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...

  • Page 112: General Design

    (1). The pressure plate is held by 12 springs (7) equally located around the circumference in the Hudson clutch while the Terraplane uses 9 large springs and six inner springs. The pressure plate is drawn back from the driving plate by three levers (3) which are mounted on the clutch cover (8) and moved by the ball thrust bearing (12).

  • Page 113: Section 8 Page 4 Hudson-Terraplane

    SECTION 8 HUDSON-TERRAPLANE Page 4...
  • Page 114 SECTION 8 MECHANICAL PROCEDURE MANUAL Page 5 by the pedal spring so that rattles may develop. remove clevis pin (C) and turn yoke (B) to shorten or lengthen To adjust: loosen lock nut (A) (Fig. 805 and 806), the rod as necessary. Lubrication Service The lubricant in the clutch, in addition to lubricating the working parts, also cools the friction surfaces and keeps the...
  • Page 115 (3) and finger retainers (5). Figure 808-3-441 Clutch Drain and Refill Kit equipment to handle clutch service on all Hudson and Terra- plane clutches. This equipment can be purchased in the com- plete set or as individual items.
  • Page 116 Engaging Springs Put hand wheel in place and guide throwout finger retainers The engaging springs used in Hudson and Terra- plane into holes in cover as wheel is being run down on screw. Put clutches are pre-set so that they will lose very little of their nuts (6) on three throwout finger retainers, drawing down original strength in use, unless they become excessively hot.
  • Page 117 SECTION 8 HUDSON-TERRAPLANE Page 8 The capscrews should be tightened gradually, drawing down smoothly. The oil seal should be in good condition without diametrically opposite screws, in order to insure a good gasket any tears or folds in the leather.
  • Page 118 MECHANICAL PROCEDURE MANUAL Page 1 SECTION 9 AUTOMATIC CLUTCH Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 120 The principle of operation of the Automatic Clutch Mecha- taper slot (16) and escapes. The further the accelerator plunger nism used on all Hudson and Terraplane models is the same, is pushed in, the deeper the portion of the taper slot in commu-...
  • Page 121 SECTION 9 HUDSON-TERRAPLANE Page 4 Figure 901—Automatic Clutch Unit—1934-1936 ISSUED MAY, 1937 Printed in U. S. A.
  • Page 122 SECTION 9 MECHANICAL PROCEDURE MANUAL Page 5 Too much lash will cause the accelerator plunger to be moved 2. Clutch Operation in until the tapered slot has registered with the air port giving Check the clutch pedal adjustment to see that the center of rapid clutch engagement and causing the car to jerk or the the pedal shank clamp bolt is 1 from the toe board (see Figure engine to stall when starting with slightly more than an idle...
  • Page 123 SECTION 9 HUDSON-TERRAPLANE Page 6 Figure 903—Automatic Clutch Unit—1937 ISSUED MAY, 1937 Printed in U. S. A.
  • Page 124 The piston should be relubricated every 15,000 miles with one Adjust piston rod clevis (G), (Figure 904) so that the center ounce of Genuine Hudson Shock Absorber Fluid. This can most of clevis pin (I) is exactly 1-7/8" from the rear end of the readily be injected by removing the piston rod guard and placing piston rod (do not measure to lock nut).

  • Page 125: Section 9 Page 8 Mechanical Procedure Manual

    SECTION 9 MECHANICAL PROCEDURE MANUAL Page 8 5A.-6A. Centering Piston Travel in Cylinder rod (G) begins to move backward, should begin to open the (Power units with piston rod cable—Figure 902) throttle and increase the engine speed. 8. Cushion Valve Adjustment Depress accelerator pedal and pull piston back to limit.
  • Page 126 9. Final Test and Adjustment normally. On the 1937 Hudson and Terraplane models, this With engine at normal operating temperature and idling condition can exist only at speeds below 15 miles per hour...
  • Page 127 SECTION 9 MECHANICAL PROCECDURE MANUAL Page 10 position, the cylinder must be disassembled, the piston rebuilt shift rail switch terminal. If operation is obtained, replace and the cylinder inspected for dents or scores. switch; if not, replace or repair wire. If automatic clutch works in high gear, replace switch.
  • Page 128 SECTION 9 HUDSON-TERRAPLANE Page 11 16. Governor Switch-1937 With clutch engaged, transmission in high and selector This test can be made on road or with rear wheels jacked up. in high, increase engine speed until speedometer registers With transmission in high gear—selector in high gear and 25 m.p.h.
  • Page 130 MECHANICAL PROCEDURE MANUAL Page 1 SECTION 10 TRANSMISSION Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 132 SECTION 10 MECHANICAL PROCEDURE MANUAL Page 3 TRANSMISSION General Design linkage (Figure 1002). When the clutch is engaged the balls The transmission is of the quick synchronizing type incorporating (54 and 77) are locked in the shifting rail notches. When the helical gears to give a silent second speed.
  • Page 133 SECTION 10 HUDSON-TERRAPLANE Page 4 Figure 1001—Transmission Assembly...
  • Page 134 SECTION 10 MECHANICAL PROCEDURE MANUAL Page 5 Disassembly of Transmission low and reverse shift rail locking device and take off links (81) (1) Upon removal of the transmission from the chassis, the and rail lock rods (78). cap screws holding the transmission cover to the case should be (4) Remove six bolts (64) holding clutch housing to trans- taken out and the hand control lever and cover removed as an mission and take off clutch housing assembly.
  • Page 135 SECTION 10 HUDSON-TERRAPLANE Page 6 (11) Pull main shaft and rear bearing out of transmission case placing the opposite jaw just above the lock ring as shown in by means of adapter J-778 screwed into end of main shaft and Figure 1005.
  • Page 136 SECTION 10 MECHANICAL PROCEDURE MANUAL Page 7 separate the gears. After the countershaft (21) has been forced shifter pickup lever (41) together in their proper positions with back out of the splines in the drive gear 29) by this method the the plunger and plunger spring (42) in the shifter lever as shaft should be turned slightly so that the splines of the shaft butt shown, and the locator pin (40) in the lower lever.

  • Page 137: Section 10 Page 8 Hudson-Terraplane

    SECTION 10 HUDSON-TERRAPLANE Page 8 reamed to exact size and alignment a: shown in Figure 1010, using countershaft. countershaft bushing, line reamer J-466. When reaming the front bush- (40) With low and reverse shifter lever in neutral position ing insert the reamer through the countershaft rear bearing cap, bolt cap (straight up), and the three countershaft gears held together, install assembly in transmission case.
  • Page 138 SECTION 10 MECHANICAL PROCEDURE MANUAL Page 9 and gear (36) in transmission case, entering the sliding gear collar on the reverse gear shifter (38). (48) Install the stationary shaft (84) in the 1934 and 1935 transmission, secure with dowel screw (92) and replace reverse gear shaft cap (85) gasket (87) and screws (86).
  • Page 139 SECTION 10 HUDSON-TERRAPLANE Page 10 been turned under, which might cause a front end oil leak. 59) Install the 7 thrust balls and the 26 needle rollers (12), Tighten retainer cap screws (5) securely. packing with cup grease to hold them in place while assembling in transmission.
  • Page 140 MECHANICAL PROCEDURE MANUAL Page 1 SECTION 11 THE ELECTRIC HAND Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 142 SECTION 11 MECHANICAL PROCEDURE MANUAL Page 3 THE ELECTRIC HAND 1935 And First 1936 Models The electric hand provides a means of shifting the gears of a Clutch Circuit Breaker conventional selective transmission by mechanical power. The When the clutch is engaged the electrical supply circuit to control of the mechanism is electrical, while the power for the the electric hand is open, so that it is necessary to disengage shifting is derived from the vacuum of the engine intake mani-...

  • Page 143: Power Unit

    SECTION 11 HUDSON-TERRAPLANE Page 4 adjustable to determine the exact amount of clutch disengage- Power Cylinder ment before the circuit is closed and a shift made and also the The power cylinder has a vacuum operated piston which amount of clutch engagement before the power is again cut off.
  • Page 144 SECTION 11 MECHANICAL PROCEDURE MANUAL Page 5 Figure 1102...
  • Page 145 SECTION 11 HUDSON-TERRAPLANE Page 6 Figure 1103...
  • Page 146 SECTION 11 MECHANICAL PROCEDURE MANUAL Page 7 Figure 1104...
  • Page 147 SECTION 11 HUDSON-TERRAPLANE Page 8 backward until the fingers (M-M) move off of bar (Q) open- the shifting rail (B) backward. The rod (D) would also be moved ing the circuit as in insert (B). backward, pulling the contact plate sliding block until the fin- Referring to Figure 1103, the action will be the same for low gers (M-M) break contact with the bar (W).
  • Page 148 SECTION 11 MECHANICAL PROCEDURE MANUAL Page 9 Figure 1105...

  • Page 149: Mechanical Adjustment

    SECTION 11 HUDSON-TERRAPLANE Page 10 be rotated to the position of insert (D). engaged. If the clutch is not disengaged before the shift is The circuit from 2 on the interlock switch is now to 1 and made, it will cause the gears to clash. Opening of the electric...
  • Page 150 SECTION 11 MECHANICAL PROCEDURE MANUAL Page 11 locked in gear before the electric hand power is cut off. This is important to prevent the transmission jumping out of gear. Power Unit Mounting The power cylinder piston rod (B), Figure 1108, should enter the fork (A) in the shifting lever easily when the transmission is in either its forward (high) or rearward (second) position.
  • Page 151 SECTION 11 HUDSON-TERRAPLANE Page 12 Cross Shift Mechanism Adjustment With the transmission in high or second gear, remove the clevis pin from the diaphragm cylinder rod yoke (A), Figure 1109. The spring in the cylinder should hold the yoke 1/4"...

  • Page 152: Testing Equipment

    (A), Figure 1113. The need for replacement will be due to bent or worn fingers. When replacing the sliding block in a 1936 Hudson or Terra- plane use Part No. 152197 which has two fingers which are...
  • Page 153 SECTION 11 HUDSON-TERRAPLANE Page 14 ELECTRIC HAND TEST EQUIPMENT Kit No. J-813 Figure 1114 Using Master Selector Switch to make comparative check of Figure 1115 Selector Switch and testing for "shorts" Testing circuits in lower harness and switches Insert shows connection of test lamps to lower harness...
  • Page 154 SECTION 11 MECHANICAL PROCEDURE MANUAL Page 15 Gears Are Shifted with Clutch Engaged current draw of approximately 2.5 amperes indicates that the Probably short circuit in clutch circuit breaker or improper solenoid is 0. K. A higher amperage indicates a short and a adjustment of circuit breaker.

  • Page 155: Section 11 Page 16 Hudson-Terraplane

    SECTION 11 HUDSON-TERRAPLANE Page 16 If, in any of the above tests, the correct lamps do not light or pins. Replace contact plate as nearly as possible in its original additional lamps are lighted, replace the lower harness. position and partially tighten the four screws so that plate may Test to detect improper plate adjustment.
  • Page 156 SECTION 11 MECHANICAL PROCEDURE MANUAL Page 17 Figure 1118...
  • Page 157 SECTION 11 HUDSON-TERRAPLANE Page 18 To Check Position of Interlock Switch If test lamps do not burn at full brilliance and a good fuse is 1. Place the transmission in low gear and the selector switch in place in the Master Selector, or when the Standard Selector in high gear and depress the clutch.
  • Page 158 SECTION 11 MECHANICAL PROCEDURE MANUAL Page 19 26. Lift cutout switch (20) and unsolder wires. 27. Remove cap (8). 28. Pull wires out of end of housing. 29. Press lock ring (17) out of groove in housing by inserting a cotter key puller through the hole to right of cutout switch hole in housing.
  • Page 159 SECTION 11 HUDSON-TERRAPLANE Page 20 38. Feed wires through hole in mounting flange of housing 47. Remove cutout switch (86). See operations 43 and 44. and replace cap (8) and washer (9). 48. Pry out switch base lock ring (17) and withdraw base (5), rotor (18 spring (19).

  • Page 160: Lower Harness

    SECTION 11 MECHANICAL PROCEDURE MANUAL Page 21 70. Remove the three wires from the selector valve terminal block. See Figure 1125 for wire color code for proper connec- tions to terminal block. 71. The lower harness is installed by reversing operations 65 through 70.

  • Page 161: Power Unit-Removal

    SECTION 11 HUDSON-TERRAPLANE Page 22 91. Put power unit in place in bracket and put rubber washer (32) and nut (30) on mounting stud. 92. Tighten nut just enough to permit cotter key to enter hole in stud and insert cotter key.
  • Page 162 112. Screw nut (94) on rod (44), tighten securely and stake. If the seats are tight in the housing, tap them out with a blunt 113. Saturate packing and felts in Hudson Shock Absorber Oil bar inserted down through the center holes in the housing. Do until leather is soft and pliable and insert piston in cylinder, not try to remove by pulling on the valve plunger.
  • Page 163 Fluid every 15,000 miles. This is required to keep the ounce of Hudson Shock Absorber piston packing soft and pliable. Electric Hand For Second 1936 and 1937 Hudson and Terraplane Models Used on 1936 Models with Serial Numbers Below: Terraplane Deluxe 6151381...
  • Page 164 SECTION 11 MECHANICAL PROCEDURE MANUAL Page 25 An alternate method is to run the engine and hold the The circuit from (12) on the selector switch will be to (2) and clutch pedal down. With all wiring in place and the clevis (4) on the interlock switch and then to the central contact (W) of pin removed from the rod, the piston will be held in the the neutral switch.
  • Page 165 SECTION 11 HUDSON-TERRAPLANE Page 26 Figure 1118 ISSUED MAY, 1937 Printed U. S. A.
  • Page 166 SECTION 11 MECHANICAL PROCEDURE MANUAL Page 27 cross shift ball crank. If these do not function after disconnect- Lamp (Y) should light and remain lighted until the transmis- sion is shifted (manually) to neutral. Lamp (YB) should be ing the linkage, the entire power unit should be rebuilt. lighted when cross shift to second and high side is completed.
  • Page 167 SECTION 11 HUDSON-TERRAPLANE Page 28 columns (one terminal of test lamp must be grounded). Plug Jack Interlock Solenoid Clutch Trans. fails to Faulty Circuit Trans. fails to (Female) Switch Terminal Circuit Breaker move into: through: (See Note) move out of:...
  • Page 168 SECTION 11 MECHANICAL PROCEDURE MANUAL Page 29 (1) A rubber grommet is assembled in the power cylinder pilot pin removed from the neutral switch operating bracket and the hole in the mounting bracket before the power unit is mounted. mechanism removed. When reinstalling the mechanism be sure (2) The lower harness is clipped to the right front and rear and left the gasket is in good condition.

  • Page 169: Propeller Shaft And Universal Joints

    Page 1 MECHANICAL PROCEDURE MANUAL SECTION 12 PROPELLER SHAFT AND UNIVERSAL JOINTS Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 171 Reassembling-1934 and 1936 The needle bearing type universal joints are used in all Hudson and 6. When reassembling hold the bearing rollers in place in Terraplane models. the cups by packing with Viscous Chassis Grease, and Figure 1201 shows a disassembled view of the construction used installing new seals on the inner ends of the cups.
  • Page 172 17. Hold the journal cross in position and insert second cup also Disassembly-1936 and 1937 in an upward direction. The universal joints used on 1936 and 1937 Hudson and 18. Put snap lock rings in place. Terraplane models is shown disassembled in Figure 1202.
  • Page 173 MECHANICAL PROCEDURE MANUAL Page 1 SECTION 13 REAR AXLE Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 175 SECTION 12 MECHANICAL PROCEDURE MANUAL Page 7 REAR AXLE General Design The Rear Axle is of the semi-floating type carried in a one piece hot rolled steel housing which provides a rigid mounting for the malleable differential carrier and the wheel bearings. This construction gives easy accessibility for service as the wheel hubs, wheel bearings, and axle shafts can be removed without disturbing any other parts.
  • Page 176 SECTION 12 HUDSON-TERRAPLANE Page 4...
  • Page 177 Figure 1305-Removing Rear Wheel Hub J-446—Wheel Puller—1934-5 Terraplane and Short W. B. Hudson J-350—Wheel Puller—1934-5 Long W. B. Hudson J-736—Wheel Puller—1936-7 All Terraplane and Hudson Figure 1304-Spring Seat Cushions Figure 1301-Rear Axle Assembly 1. Axle Housing 23.
  • Page 178 SECTION 13 HUDSON-TERRAPLANE Page 6 Figure 1308—Removing Broken Axle Shaft—HM-540 Broken Axle Shaft Remover Figure 1306—Replacing Bearing Cap Oil Seal—J-353-l Oil To Renew Axle Shaft Thrust Button Seal Replacer (8) Grind off thrust button (28) on emery wheel flush CAUTION: Under no circumstances should the knockout with end of shaft.
  • Page 179 SECTION 13 MECHANICAL PROCEDURE MANUAL Page 7 (11) Disconnect brake conduits and cables at backing plates and remove brake shoe assemblies. (12) Cut heads off rivets holding backing plates to axle. using sharp cold chisel. Install new backing plates and re-rivet to axle housing.
  • Page 180 SECTION 13 HUDSON-TERRAPLANE Page 8 case for eccentricity and side run out, using dial indicator J-390-X, and placing hubs of case in Vee blocks. If greater than .002" it will be necessary to true up flange in lathe or renew left hand case.
  • Page 181 SECTION 13 MECHANICAL PROCEDURE MANUAL Page 9 bearing adjusting nuts (18) so that drive gear and drive pinion teeth bottom. (44) Install differential bearing caps in place and insert cap screws, drawing them up finger tight, and engaging threads on the differential bearing adjusting nuts.
  • Page 182 SECTION 13 HUDSON-TERRAPLANE Page 10 Adjusting Axle Shaft End Play (61) Clamp dial indicator gauge J-390-X to brake backing plate so that dial plunger rests against end of axle shaft. Next check end play, which should be from .004" to .010". This is obtained by moving the shaft in and out and by taking out or adding shims (37) between axle housing and bearing adjusting cap.
  • Page 183 MECHANICAL PROCEDURE MANUAL Page 1 SECTION 14 BRAKES Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 185 MECHANICAL PROCEDURE MANUAL Page 3 BRAKES The brakes used on all Hudson and Terraplane models are of Adjustment of 1935 Brake Control the Bendix Duo-Servo type: Those used on 1934 and 1935 (6) Disconnect all four wheel brake cables from rotary models are mechanically actuated through cables while the equalizer.
  • Page 186 SECTION 14 HUDSON-TERRAPLANE Page 4...
  • Page 187 SECTION 8 HUDSON-TERRAPLANE Page 5...
  • Page 188 SECTION 14 HUDSON-TERRAPLANE Page 6...
  • Page 189 SECTION 14 MECHANICAL PROCEDURE MANUAL Page 7...
  • Page 190 1405, extreme care must be used to prevent dirt from entering the master cylinder. The use of other than Genuine Hudson Hydraulic fluid or the introduction of oil with a mineral base into the system will cause the rubber parts to swell and become inoperative. Grit and abra- sive substances permitted to enter into the fluid reservoir will cause the cylinder barrel to become scratched or pitted.

  • Page 191: Wheel Cylinder

    (23) Fill the filling bottle (J-713), Figure 1411, with Genu- WHEEL CYLINDER ine Hudson Hydraulic brake fluid, put nozzle in reservoir and open filler bottle valve before commencing this operation. Description This will keep tank half full of fluid during bleeding operation.
  • Page 192 SECTION 14 HUDSON-TERRAPLANE Page 10 Hydraulic fluid and keep at least half full during bleed- ing operation. (24) Remove screw (d), Figure 1407, from end of bleeder valve and attach bleeder tube (J-628), Figure 1410. Allow tube to hang in clean container, such as a pint mason jar.
  • Page 193 SECTION 14 MECHANICAL PROCEDURE MANUAL Page 11 Brake Shoe Adjustment (Mechanical or Hydraulic 1404, against the stop. An adjustment is necessary if the pedal Actuation) shank touches the toe board in the fully released position or has There are only two points of adjustment in the braking more than 8"...
  • Page 194 SECTION 14 HUDSON-TERRAPLANE Page 12 (39) Pull hand brake lever (Hydraulic system only) until brake assembly. Unfasten conduit abutment brackets, clean equalizer bar plate is 1/8" from stop, Figure 1403 and 1404. exposed portion of cable, slip conduit toward cross shaft, (40) Pull brake cables tight and adjust ends so clevis exposing that portion of cable which is sheathed by conduit.
  • Page 195 As the frictional quality decreases, the pressure on the and the brake drum will heat. Replace cups and wash unit in brake pedal is naturally increased to get the equivalent stop. alcohol and dip all parts in Hudson Hydraulic brake fluid before c. Clean or replace lining. reassembling.
  • Page 196 DON'T attempt to salvage used brake fluid. Brake Fluid Hudson Hydraulic brake fluid is prepared by the Wagner Use Genuine Parts Electric Corporation, manufacturers of Lockheed Hydraulic All parts, brake fluid and brake linings are to be obtained...
  • Page 197 SECTION 14 MECHANICAL PROCEDURE MANUAL Page 15 depressed, fluid is forced from the master cylinder into M through the valve seat P and out N to the wheel cylinders, applying the brakes. Had the clutch pedal been depressed before the brake pedal, the parts would have been in the position shown in Figure 1414.

  • Page 198: Section 14 Page 16 Mechanical Procedure Manual

    19. Fill master cylinder and reservoir with Hudson Brake 9. Assemble new pedal shaft assembly in place in bracket, place clutch pedal lever in position and drive in taper pin.

  • Page 199: Front Axle

    MECHANICAL PROCEDURE MANUAL Page 1 SECTION 15 FRONT AXLE Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 201 SECTION 15 MECHANICAL PROCEDURE MANUAL Page 3...

  • Page 202: Section 15 Page 4 Mechanical Procedure Manual

    SECTION 15 MECHANICAL PROCEDURE MANUAL Page 4...
  • Page 203 SECTION 15 MECHANICAL PROCEDURE MANUAL Page 5...
  • Page 204 SECTION 15 MECHANICAL PROCEDURE MANUAL Page 6 Figure 1501—1934 and 1935 Standard Axle 1—Axle Center 12—Steering Arm—R. H. 2—Pivot Pin Thrust Washer and Ball Cup Assembly 13—Steering Arm—L. H. 3—Pivot Pin Bushing 14—Steering Arm Nut 4—Steering Spindle—R. H. 15—Wheel Grease Deflector 5—Steering Spindle—L.
  • Page 205 SECTION 15 MECHANICAL PROCEDURE MANUAL Page 7 FRONT AXLE The front axles are of the Elliot type with the spindles until the forward bearing is driven out. mounted on hardened and ground steel bushings with ball bear- 5. Continue driving until the pin is removed. ings to carry the thrust load.
  • Page 206 SECTION 15 MECHANICAL PROCEDURE MANUAL Page 8 car weight is held on stand jacks but leave roller jack in place to 23. Remove tie rod end stud nuts, and disconnect tie rod from support front axle. right and left steering arms. 13.
  • Page 207 SECTION 15 MECHANICAL PROCEDURE MANUAL Page 9 bottom about 2/4 of the way with the keyway in line with the keyway in the steering arm hole in the spindle. 33. After the shim pack has been selected, place cork seal in groove in top of 1937 spindle.
  • Page 208 SECTION 15 MECHANICAL PROCEDURE MANUAL Page 10 39. Put nut (73) on bolt and tighten securely. NOTE: Before installing jam nuts on U bolts on 1936 and 40. Reinstall tie rod. 1937 models, lift rear end of torque arm. It should fall slowly 41.

  • Page 209: Steering Gear

    MECHANICAL PROCEDURE MANUAL Page 1 SECTION 16 STEERING GEAR Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 211 Worm and Sector Roller Tooth wires at starting motor terminal and solenoid switch. (Not 1934 All Terraplane 123" W.B. Hudson 8 necessary on 1937 models.) 116" W.B. Hudson 8 20. Remove two bolts in starting motor mounting flange 1935 All Terraplane 124"...
  • Page 212 SECTION 16 MECHANICAL PROCEDURE MANUAL Page 4 steering wheel to middle of its travel with trade marked spoke (a) Pressure faces of worm should be polished but show no pointing down. Front wheels should be straight ahead. If wheels irregular wear. are not straight ahead, see pages 9 and 10 for adjustment of drag (b) Sector teeth should be polished but show no irregular link.
  • Page 213 SECTION 16 MECHANICAL PROCEDURE MANUAL Page 5 57. Turn the eccentric adjusting sleeve (F), Figure (1601), clockwise very gradually, checking at each movement the amount of lost motion still existing at the ball arm. Adjust to point where lash can be just felt at end of ball arm, being sure to finish movement of eccentric adjustment sleeve (F) in clockwise direction.
  • Page 214 SECTION 16 MECHANICAL PROCEDURE MANUAL Page 6 case, correct as follows: 60. Turn column 3 revolution to the right and shake the steering arm to note the amount of play or lash at this point. 61. Now turn column revolution to the left which is in reality revolution to left of center) and shake arm.
  • Page 215 SECTION 16 MECHANICAL PROCEDURE MANUAL Page 7 (b) Worn or scored roller shaft—Replace shaft and roller end play in the column tube while not more than 3/4 pounds assembly. pull at the rim of the steering wheel (9" radius) should be (c) Worn roller or worn or loose roller bearing —Replace required to turn the column.
  • Page 216 SECTION 16 MECHANICAL PROCEDURE MANUAL Page 8 85. If the pitman arm ball can be moved more than 12" with 91. Remove 4 worm cover screws and remove cover and shims. turning the column tube, the roller shaft should be withdrawn 92.
  • Page 217 The shimmed type drag link socket, shown in Figure 1609, adjusting screw should be turned out. is used on all 1937 Hudson and Terraplane models and all 1936 104. After adjustment replace the lock plate and lock nut and recheck the pitman ball arm movement and the pull required to turn the wheel from the mid-position.
  • Page 218 SECTION 16 MECHANICAL PROCEDURE MANUAL Page 10 Hudson 8 64-641008 except Nos. 641134 to 641135 Incl. the socket and secured by a cotter key. Hudson 8 65-65374 No exceptions. 66-661791 No excep- tions. 67 671681 No exceptions. Adjustment 1. Remove cotter key and screw plug (E).
  • Page 219 MECHANICAL PROCEDURE MANUAL Page 1 SECTION 17 FRAME AND SPRINGS Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 221 SECTION 17 MECHANICAL PROCEDURE MANUAL Page 3 FRAME AND SPRINGS The frames are built-up of pressed steel sections incorporating Removal of Springs (front or rear) double drop side rails, double X bracing and box sections The axle (front or rear) should be supported on a roller formed in the side rails by extension of the X members.
  • Page 222 SECTION 17 MECHANICAL PROCEDURE MANUAL Page 4 — Figure 1701 Frame Measurements 1934 1935 K. & KS. KU, LT, LTS, LL G, GU HT & HHU Dimension 116” W.B. 112” W.B. 117” W.B. 124” W.B. 21-7/8" 21-7/8" 21-7/8" 21-7/8" 21-15/16" 21-15/16"...
  • Page 223 SECTION 17 MECHANICAL PROCEDURE MANUAL Page 5 inner ends of each are guided by a plate (Sketch C), Figure 1703, 14. Insert one end of spring shackle through main leaf eye through which the center bolt passes. This plate should be and place the spacer (J-524) between the spring eye and assembled between the second and third leaves with the flanges shackle as shown in Figure 1704.

  • Page 224: Stabilizer Bar

    SECTION 17 MECHANICAL PROCEDURE MANUAL Page 6 25. Tighten plug flush with the top of link and insert cotter key. 26. Insert bar with links assembled under car, starting from the right side and passing over the tail pipe. 27. Assemble the bar to the chassis frame by using the two clamps over the rubber blocks (B) and bolting through the holes located about 4"...

  • Page 225: Front End Alignment

    MECHANICAL PROCEDURE MANUAL Page 1 SECTION 18 FRONT END ALIGNMENT Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 227 SECTION 18 MECHANICAL PROCEDURE MANUAL Page 3 FRONT END ALIGNMENT The correct handling of a car can be obtained only when the Disconnect rear end of drag link from pitman arm. following conditions are correct: Wheels should turn free throughout their travel. 1.
  • Page 228 SECTION 18 MECHANICAL PROCEDURE MANUAL Page 4 18. Remove left hand spindle nut and washer and install jiffy 19. Turn the head of the jiffy gauge so that it is parallel to caster and camber gauge as shown in Figure 1801 so that level the axle as shown in Figure 1802 with wheels still straight bubble is between gauge lines when pointer is set at zero.
  • Page 229 Page 5 however, a decrease in caster, if spindle pins are not loose in the The correct caster settings are as follows: bushings, is not detrimental to steering unless an actual reverse Terraplane Hudson Six Hudson Eight camber exists. 1934 2½°—3½°...
  • Page 230 SECTION 18 MECHANICAL PROCEDURE MANUAL Page 6 40. Raise front end of car and remove turning angle plates and lower car. Release brake and roll rear wheels off blocks. 41. Pull car forward by bumper about 10 feet with wheels in straight ahead position to be sure all parts have assumed their normal road position.
  • Page 231 SECTION 18 MECHANICAL PROCEDURE MANUAL Page 7 49. After getting correct toe-in, tighten tie rod end clamp bolt nuts. wheel to the left. 50. Set wheels straight ahead and check steering wheel to see that NOTE: Whenever the thickness of shims is changed to increase trade-marked spoke is pointing straight down.

  • Page 233: Shock Absorbers

    MECHANICAL PROCEDURE MANUAL Page 1 SECTION 19 SHOCK ABSORBERS Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 235 Unscrew the piston rod bushing by turning the filler plug hole. the head with a bar fitted into the grommet hole and the upper 5. Pour the exact amount of Genuine Hudson Shock Ab- and lower ends pulled apart. sorber Fluid recommended into the Filler Cup.
  • Page 236 SECTION 19 MECHANICAL PROCEDURE MANUAL Page 4 Figure 1901—Monroe Shock Absorbers ISSUED MAY, 1937 Printed in U. S. A.
  • Page 237 ..* The Monroe Shock Absorber is used on a small percentage of the 1934 Hudson models, (See table under Spicer-Delco Shock Absorbers for other Hudson models.) † The 1934 Terraplane Replacement units use the same internal parts as the 1935 units while the upper eye and grommet are special, being used only with these units.
  • Page 238 SECTION 19 MECHANICAL PROCEDURE MANUAL Page 6 Figure 1904—Spicer-Delco Shock Absorber—1935-1936 ISSUED MAY, 1937 Printed in U. S. A.
  • Page 239 (K) allowing oil to pass below the piston so long as the required pressure is maintained in the This same unit is also used on the 1936 Hudson models working cylinder. under the name "Delco."...
  • Page 240 1. Wash all parts of the shock absorber carefully in that filler plug is tightly seated. gasoline and blow dry, paying particular attention to the The correct quantity of Genuine Hudson Shock Absorber fluid required for refilling is as follows: Model...
  • Page 241 A new rubber seal(s) should always be used. Dip the rubber ing projects slightly above top surface of valve disc, then push seal in Genuine Hudson Shock Absorber Fluid before install- piston down into tube until it bottoms against end of bushing, ing to prevent it being damaged when the guide is screwed keeping pressure on valves with tool.
  • Page 242 SECTION 19 MECHANICAL PROCEDURE MANUAL Page 10 Be sure the rod sleeve (M) and the guide (R) are securely To Remove Rear Shock Absorbers, 1934-1936 tightened. Refill the shock absorber and reinstall on the car. Follow procedure in (2) of Removal and Replacement of Front Units for both upper and lower mountings.

  • Page 243: Wheels And Tires

    MECHANICAL PROCEDURE MANUAL Page 1 SECTION 20 WHEELS AND TIRES Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 245 Hudson and Terraplane models, will be found under "Tires" second bead by the same procedure used to remove the first.
  • Page 246 SECTION 20 MECHANICAL PROCEDURE MANUAL Page 4 lines in the tread design. When the tread consists wholly or proper handling of the car at speeds over 50 miles per hour. partially of blocks this wear is usually first noticed as a high All tires used on Hudsons and Terraplanes are balanced point or ridge at the back of the block as it rests on the ground.
  • Page 247 SECTION 20 MECHANICAL PROCEDURE MANUAL Page 5 from the chalk mark until the wheel balances. When a third the lip of the weights between the tire and felloe band and weight is necessary it should remain directly on the chalk mark lock with the set screws.
  • Page 249 MECHANICAL PROCEDURE MANUAL Page 1 SECTION 21 BODIES Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...

  • Page 251: Replace Glass

    SECTION 21 MECHANICAL PROCEDURE MANUAL Page 3 BODIES All Hudson-Built Bodies are of welded all-steel construc- 6. Remove two screws securing regulator to windshield tion. The body floor panel is a single steel stamping to which frame. all side panels and pillars are welded or riveted. This forms the 7.
  • Page 252 SECTION 21 MECHANICAL PROCEDURE MANUAL Page 4 bumpers from the front with the lip of the bumper turned Align the holes in the bumpers with the screw holes and replace the screws. 1936 and 1937 Windshields The windshields of the 1936 and 1937 models are of the non-opening type.
  • Page 253 SECTION 20 MECHANICAL PROCEDURE MANUAL Page 5 Top Deck-1934 The 1934 top deck is of fabric supported on top bows and an under layer of sheeting and padding. The deck material as well as the sheeting is tacked into a fiber tacking strip which is encased in a steel channel.
  • Page 254 SECTION 21 MECHANICAL PROCEDURE MANUAL Page 6 The bows and masonite strips should not carry the weight The fabric is shown here before the inner edge is put of the top panel as their sole purpose is to act as dampeners. in place.
  • Page 255 SECTION 20 MECHANICAL PROCEDURE MANUAL Page 7 geared to the regulator handle. The lever fits in two cam plates, one of which raises and lowers the wing while the other turns it. The two nuts on the link at the front of the inner cam plate provide an adjustment of the spring tension which holds the wing in a fore and aft position when closed or lowered.
  • Page 256 SECTION 21 MECHANICAL PROCEDURE MANUAL Page 8 If the latch edge of the door is high spread the upper hinge and if low spread the lower hinge only. If the door sets too close to the latch pillar the hinge pins should be removed with B-170 Hinge Pin Remover and the door removed.
  • Page 257 SECTION 21 MECHANICAL PROCEDURE MANUAL Page 9 pushing forward on the seat back. The mechanism shown in Figures 2112 and 2113 is used on 1937 model Brougham front seats which are of the bench type, with a divided back. The lever A controls the forward and rearward adjustment as in the sedan type.
  • Page 259 MECHANICAL PROCEDURE MANUAL Page 1 SECTION 22 RADIO Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 261 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 3 RADIO The Radio Receivers on various yearly models of both the Hudson and Terraplane are as follows: Year Made By Model No. 1934 Zenith 1935 Zenith 1936 (1st Production) R.C.A. 1936 (2nd Production) R.C.A.
  • Page 262 (e) Tube out of socket. into the right hand body pillar and ground shield to body bulk 2. (a) Defective tube. head. (Antennas are installed in the roof of all 1934 Hudson and (b) Shorted antenna. Terraplane Bodies.) (c) Weak storage battery.
  • Page 263 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 5 To Remove Chassis from Case (d) Broken tube socket. 1. Remove 11)/32" screw from bottom rear of case. (e) Short in antenna or lead-in. 2. Remove the 9-642 screws from around the front edge of 7.
  • Page 264 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 6 3. Remove 4-6/32" speaker screws from around grill on panel. To Remove Control Head: 1. Pull off tuning and volume control knobs. Tubes: 2. Remove 3 screws from around dial. These screws hold Tubes should be checked on a standard test panel and con- control head to instrument panel.

  • Page 265: Installation

    7. Insert cable from right control knob into knurled collar "F" and tighten collar. The cable should be inserted RADIO INSTALLATION-1935—HUDSON far enough to insure engagement of the tongue in the AND TERRAPLANE tuning condenser drive member but should not bottom.
  • Page 266 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 8 13. If lower flanges of running boards are not drilled for 15. Insert lead-in through hole in body and connect end to the antenna, locate and drill four (4) 3/16" holes in bottom hori- bayonet connection on the radio receiver lead-in and attach clip zontal flange of each running board, locating the first hole 22"...
  • Page 267 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 9 19. When installing radio on Terraplane Special models with air cooled generator, mount generator charge regulator above relay with two screws to two threaded holes in dash provided for the purpose. Resistor bar should be on lower face. Remove ground cup from generator "F"...
  • Page 268 23. Install Part No. 47965 ground strap from left mount- oscillator capable of delivering a modulated signal at ing stud of radiator inlet neck on Hudson Six to top water 1600, 1400, 600 and 252% K.C. will be essential. Proceed pump mounting cap screw, using Part No.

  • Page 269: Service Inspection

    SECTION 22 MECHANICAL PROCEDURE MANUAL Page 11 5. Set test oscillator to 1400 K.C. and turn gang condenser to 1. Inoperative 5. Dial off calibration resonance and peak the three trimmers accurately. Now set 2. Weak 6. Intermittent operation pointer on dial to 1400 K.C. by turning indicator screw 3.
  • Page 270 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 12 (f) Broken antenna wire or antenna grounded. Dial Off Calibration (g) Speaker plugs loose or out of receiver. (a) See paragraph on resetting indicator under "Alignment." (Page 10.) Weak (a) Grounded or partially grounded antenna. Intermittent Operation (b) Defective tube.
  • Page 271 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 13 8. Noisy Reception Feed Cable Assembly and Fuse — See "ignition Interference". (7). Aerial Assembly — (b) Defective vibrator. Aerial Lead-In with Shield and Clip — (c) Loose antenna connection. Distributor Suppressor — (d) Loose fuse holder.
  • Page 272 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 14 forward (rear on right-hand drive) socket and tighten nut. until all but the last hook has been put in place. Start at NOTE: On right-hand drive installations the long control cable the right front and work backward, drawing the antenna should be attached to the volume (left) control knob.
  • Page 273 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 15 element. (Insert "CC"). NOTE: This condenser not required in the antenna input circuit This filter is a "band-pass" type, on Terraplane Deluxe models. having an acceptance band between 540 K.C. and 1600 K.C., 15.
  • Page 274 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 16...
  • Page 275 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 17...
  • Page 276 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 18 at points predetermined by careful test. This procedure re- 1—Aerial Assembly and Brackets duces noise induction caused by interference circulating in 1—Aerial Lead-In with Shield and Clip the receiver case. Several of the circuits are grouped and 1—Distributor Suppressor grounded at a single point to further eliminate such trouble.
  • Page 277 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 19 INSTALLATION-1936 MODELS—CB-6 8. Insert speaker lead plug "J" into case. RECEIVER 9. Attach wire G to socket at left end of case. 1. Lift floor mat and install three ground forks (Part No. 10.
  • Page 278 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 20...
  • Page 279 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 21...
  • Page 280 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 22 22. Attach large condenser to cap screw at rear of gener- RCA-85 tube, the current being developed through resis- ator and connect condenser terminal to generator "A" termi- tors R-20 and R-21. The audio component of this current nal.
  • Page 281 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 23 INSTALLATION-1937—MODEL DB-37 and F on the right, and secure with two cap screws "A". On 1. Lift floor mat and install three ground forks (Part No. right-hand drive models, the receiver is mounted with the 151210) to front, rear and left of floor board opening so that control shaft connections to the left.
  • Page 282 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 24 21. When installing radio on Terraplane DeLuxe models, 7. Insert the driving tongue of the control cable from the mount generator charge regulator (Insert "BB") in place of right (tuning) knob into the top socket "E" and tighten nut. relay with two screws to two threaded holes in cowl side Insert the driving tongue of the control cable from the left panel provided for the purpose.
  • Page 283 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 25...
  • Page 284 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 26...
  • Page 285 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 27 rprimary and secondary windings of the i-f transformers, In order to complete the installation on Terraplane which resonate with fixed condensers and are tuned by DeLuxe models, a Charge Control is required in addition adjustable magnetic cores to a nominal frequency of 260 to the Radio Kit.
  • Page 286 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 28 to attach the last hook to the outer hole of the front bracket. condenser terminal to gauge unit terminal. (Insert "DD".) 11. Connect the right- and left- hand antennas with a bolt 14. Attach one small condenser to upper rear cap and nut (H) with the lead passing over the propeller shaft.
  • Page 287 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 29 18. When installing radio on Terraplane Deluxe models, DETECTION and A.V.C.—Detection takes place as a mount generator voltage regulator (Insert "BB") in place of result of the rectifying action of one of the diodes of the relay with two screws to two threaded holes in cowl side RCA-6B7 tube, the voltage being developed across resis- panel provided for the purpose.
  • Page 288 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 30...
  • Page 289 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 31...
  • Page 290 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 32 The receiver and speaker should be removed from the car will be reflected in the motor operation as well as that of the and placed where they will be readily accessible. Covers radio. of the top and bottom of the receiver housing should be removed.

  • Page 291: Alignment Procedure

    SECTION 22 MECHANICAL PROCEDURE MANUAL Page 33 should be indicated by an instrument such as the RCA of such trouble is at a connection or within a tube. Exchange of the tubes is the most definite method of tracing tube Stock No.
  • Page 292 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 34 100 mmfd. capacitor in series with the antenna lead. Tune the Oscillator to 1400 kc. Allow the Output Indicator to remain attached to the receiver output. c. Tune the receiver so that the dial reading is 1400 kc. Then adjust the oscillator, detector and antenna coil trim- mers, C-10, C-7 and C-3 respectively, tuning each to the point producing maximum indicated receiver output.
  • Page 293 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 35 screen. These waves will be identical in shape but will be totally disconnected and appearing in reversed positions. They will have a common baseline which is discontinuous. Adjust the frequency and synchronizing input controls of the Oscillograph to get the proper waves and to make them remain motionless on the screen.
  • Page 294 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 36 and C-3 to produce complete coincidence at maximum of the oscillographic images. It will not be necessary to amplitude of the two waves. rock the tuning control for this adjustment, inasmuch as f. Disconnect the Frequency Modulator from the Oscilla- the Frequency Modulator is varying the signal in an equiv- tor.
  • Page 295 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 37 Stock No. 9595, will be required as the source of signal at the specified alignment frequencies. Means for indication of the receiver output during alignment is also necessary to accurately show when the correct point of adjustment is reached.
  • Page 296 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 38 c. Tune the receiver so that the dial reading is 1,400 kc. c. Increase the output of the oscillator until a deflection Then adjust the oscillator, detector, and antenna coil trim- is noticeable on the oscillograph screen. The figure ob- mers, C-13, C-8 and C-5 respectively, on the CB-6 and tained represents several waves of the detected signal, the DB-37 receivers and trimmers C-14, C-9 and C-5 on SA-37...
  • Page 297 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 39 g. With the images established as in (f), readjust the two Change the oscillograph synchronizing switch to "Ext.", screws on the second i-f transformer so that they cause the set its range switch to its No. 2 position and the frequency curves on the oscillograph screen to become exactly coinci- control slightly above its mid-position.
  • Page 298 SECTION 22 MECHANICAL PROCEDURE MANUAL Page 40 TUNING CONDENSER DRIVE feasible to test the tubes while in the receiver, due to Smooth control should be obtained over the entire tuning measurement inaccuracies which would result from the range of the variable condenser. If irregularity is present, effects of the circuits.
  • Page 299 MECHANICAL PROCEDURE MANUAL Page 1 SECTION 23 SERVICE INFORMATION AND ADJUSTMENTS Service Magazine—Reference Sheet and Service Bulletin Reference Bulletin or Reference Sheet Date Subject DETAILS OF INFORMATION No. Magazine Issue and Page...
  • Page 301 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 3 1934 SERVICE INFORMATION AND ADJUSTMENTS Terraplane Terraplane Hudson Hudson Eight Eight 112" W. B. 116" W. B. 116" W. B. 123" W. B. Starting Serial No. (U. S. Plant) 373000 21500 950000 252000 Starting Engine No.

  • Page 302: Electrical Equipment

    SECTION 23 MECHANICAL PROCEDURE MANUAL Page 4 Terraplane Terraplane Hudson Hudson Eight Eight 112" W. B. 116" W. B. 116" W. B. 123" W. B. Starting Serial No. (U. S. Plant) 373000 21500 950000 252000 Starting Engine No. (All Plants)
  • Page 303 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 5 Terraplane Terraplane Hudson Hudson Eight Eight 112" W. B. 116" W. B. 116" W. B. 123" W. B. Starting Serial No. (U. S. Plant) 373000 21500 950000 252000 Starting Engine No. (All Plants)
  • Page 304 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 6 Terraplane Terraplane Hudson Hudson Eight Eight 112" W. B. 116" W. B. 116" W. B. 123" W. B. Starting Serial No. (U. S. Plant) 373000 21500 950000 252000 Starting Engine No. (All Plants)
  • Page 305 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 7 Terraplane Terraplane Hudson Hudson Eight Eight 112" W. B. 116" W. B. 116" W. B. 123" W. B. Starting Serial No. (U. S. Plant) 373000 21500 950000 252000 Starting Engine No. (All Plants)
  • Page 306 252000 Starting Engine No. (All Plants) 48000 48000 30000 30000 Starting Serial No. (Canadian Plant) 52000 76000 1300 8100 ENGINE (Cont’d) Lubrication System: Type Hudson Duoflo Automatic Pump Type Oscillating Oscillating Oscillating Oscillating Plunger Plunger Plunger Plunger Pump Drive Camshaft...
  • Page 307 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 9 Terraplane Terraplane Hudson Hudson Eight Eight 112" W. B. 116" W. B. 116" W. B. 123" W. B. Starting Serial No. (U. S. Plant) 373000 21500 950000 252000 Starting Engine No. (All Plants)
  • Page 308 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 10 Terraplane Terraplane Hudson Hudson Eight Eight 112" W. B. 116" W. B. 116" W. B. 123" W. B. 373000 21500 950000 252000 Starting Serial No. (U. S. Plant) 48000 48000 30000 30000 Starting Engine No. (All Plants)
  • Page 309 70000 55000 55000 55000 Starting Serial No. (Canadian Plant) C51101 C52101 C53101 C54101 C55101 C56101 Terraplane Terraplane Hudson Hudson Special Hudson FRONT AXLE Special De Luxe and De Luxe Custom Type Elliot Elliot Elliot Elliot Elliot Caster (Actual on Car) 3-1/2°...
  • Page 310 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 12 Terraplane Terraplane Hudson Hudson Special Hudson Special De Luxe and De Luxe Custom BRAKES Location 4 Wheels 4 Wheels 4 Wheels 4 Wheels 4 Wheels Operation by Cables Cables Cables Cables Cables Drum Diameter 9"...
  • Page 311 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 13 Terraplane Terraplane Hudson Hudson Special Hudson Special De Luxe and De Luxe Custom ELECTRICAL EQUIPMENT (Cont’d Generator: Make Autolite Autolite Autolite Autolite Autolite Drive V-Belt V-Bels V-Bels V-Bels V-Bels Belt Adjustment Swing Mtng.
  • Page 312 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 14 Terraplane Terraplane Hudson Hudson Special Hudson Special De Luxe and De Luxe Custom ENGINE Number of Cylinders Arrangement Vertical Vertical Vertical Vertical Vertical Bore 3" 3" 3" 3" 3" Stroke 5" 5" 5"...
  • Page 313 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 15 Terraplane Terraplane Hudson Hudson Special Hudson Special De Luxe and De Luxe Custom ENGINE—(Cont’d) Cooling System: Circulation by Pump Pump Pump Pump Pump Temperature Control None Thermostat Thermostat Thermostat Thermostat Capacity (Gal.) 4-1/2...
  • Page 314 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 16 Terraplane Terraplane Hudson Hudson Special Hudson Special De Luxe and De Luxe Custom ENGINE—(Cont’d) Lubrication System: Type Hudson Duoflo Automatic Pump Type Oscillating Oscillating Oscillating Oscillating Oscillating Plunger Plunger Plunger Plunger Plunger Pump Drive...
  • Page 315 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 17 Terraplane Terraplane Hudson Hudson Special Hudson Special De Luxe and De Luxe Custom ENGINE—(Cont’d) Head Outside—Diameter 1-3/8" 1-3/8" 1-3/8" 1-3/8" 1-3/8" Opening 1-1/4" 1-1/4" 1-1/4" 1-1/4" 1-1/4" Valve Lift 11/32" 11/32" 11/32" 11/32"...
  • Page 316 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 18 Terraplane Terraplane Hudson Hudson Special Hudson Special De Luxe and De Luxe Custom TRANSMISSION—(Cont’d) Gear Ratios: 2.42 2.42 2.42 2.42 2.42 Second 1.61 1.61 1.61 1.61 1.61 High Reverse 3.30 3.30 3.30 3.30 3.30...
  • Page 317 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 19 1936 SERVICE INFORMATION AND ADJUSTMENTS Terraplane Terraplane Hudson Hudson 8 Hudson 8 Hudson 8 Hudson 8 De Luxe Custom De Luxe Custom De Luxe De Luxe (120” W. B.) (120” W. B.) (127” W. B.) (127”...
  • Page 318 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 20 Terraplane Hudson Six Hudson Eight BRAKES Location 4 Wheels 4 Wheels 4 Wheels Operation by Hydraulic Control Hydraulic Control Hydraulic Control Drum Diameter 10-1/16" 10-1/16" 11-1/16" Drum Material Alloy Steel Alloy Steel Alloy Steel Lining—Type...
  • Page 319 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 21 Terraplane Hudson Six Hudson Eight ELECTRICAL EQUIPMENT (Cont’d) Generator: Make Autolite Autolite Autolite Drive V-Belt V-Belt V-Belt Belt Adjustment Swing Mtng. Swing Mtng. Swing Mtng. Regulation —Internal Thrd. Brush Thrd. Brush Thrd. Brush...
  • Page 320 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 22 Terraplane Hudson Six Hudson Eight ENGINE Number of Cylinders Arrangement Vertical Vertical Vertical Bore 3" 3" 3" Stroke 5" 5" 4-1/2" Piston Displacement Taxable Horse Power 21.6 21.6 28.8 Actual Horse Power: Standard Compression...
  • Page 321 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 23 Terraplane Hudson Six Hudson Eight ENGINE—(Cont’d) Cooling System: Circulation by Pressure Pump Pressure Pump Pressure Pump *Temperature Control Thermostat Thermostat Thermostat Capacity (Gal.) 3-1/4 3-1/4 3-1/4 Upper Rad. Hose—Length 10-5/8" 3" 10-5/8" Diameter 1-1/2"...
  • Page 322 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 24 Terraplane Hudson Six Hudson Eight ENGINE—(Cont’d) Lubrication System: Type Hudson Duoflo Automatic Pump Type Oscillating Plunger Oscillating Plunger Oscillating Plunger Pump Drive Camshaft Camshaft Camshaft Oil Cooling by Baffles in Reservoir Baffles in Reservoir...
  • Page 323 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 25 Terraplane Hudson Six Hudson Eight ENGINE—(Cont’d) Head Outside—Diameter 1-3/8" 1-3/8" 1-3/8" Opening 1-1/4" 1-1/4" 1-1/4" Valve Lift 11/32" 11/32" 11/32" Stem Length 5-11/32" 5-11/32" 5-11/32" Stem Diameter 3/8" 3/8" 3/8" Valve Stem Guides...
  • Page 324 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 26 Terraplane Hudson Six Hudson Eight TRANSMISSION—(Cont’d) Gear Ratios: 2.42 2.42 2.42 Second 1.61 1.61 1.61 High Reverse 2.99 2.99 2.99 Free Wheeling Lubricant Capacity (Pts.) Bearings: Mainshaft Pilot Ball Ball Ball Mainshaft Bearings...
  • Page 325 MECHANICAL PROCEDURE MANUAL Page 27 1937 SERVICE INFORMATION AND ADJUSTMENTS Terraplane T e r r a p l a n e Terraplane Hudson Hudson 8 Hudson 8 Hudson 8 Hudson 8 Commercial D e l u x e Super Deluxe...
  • Page 326 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 28 Terraplane Hudson Six Hudson Eight BRAKES Location 4 Wheels 4 Wheels 4 Wheels Operation by Hydraulic Hydraulic Hydraulic Control Control Control Drum Diameter 10-1/16" 10-1/16" 11-1/16" Drum Material Alloy Steel Alloy Steel Alloy Steel Lining—Type...
  • Page 327 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 29 Terraplane Hudson Six Hudson Eight ELECTRICAL EQUIPMENT (Cont’d) Generator: Make Autolite Autolite Autolite Drive V-Belt V-Belt V-Belt Belt Adjustment Swing Mtng. Swing Mtng. Swing Mtng. Regulation—Internal Thrd. Brush Thrd. Brush Thrd. Brush External...
  • Page 328 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 30 Terraplane Hudson Six Hudson Eight ENGINE Number of Cylinders Arrangement Vertical Vertical Vertical Bore 3" 3" 3" Stroke 5" 5" 4-1/2" Piston Displacement Taxable Horse Power 21.6 21.6 28.8 Actual Horse Power: Models 70, 71 Standard Head...
  • Page 329 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 31 Terraplane Hudson Six Hudson Eight ENGINE—(Cont’d) Cooling System: Pump Hose Outlet—Length 3-1/4" 3-1/4" 3-1/4" Diameter 1-1/2" 1-1/2" 1-1/2" *By-Pass—Length 2-5/16" 2-5/16" 2-5/16" Diameter 1" 1" 1" Pump Drive V-Belt V-Belt V-Belt Fan Drive...
  • Page 330 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 32 Terraplane Hudson Six Hudson Eight ENGINE—(Cont’d) Lubrication System: Type Hudson Duoflo Hudson Duoflo Hudson Duoflo Pump Type Automatic Automatic Automatic Oscillating Oscillating Oscillating Pump Drive Plunger Plunger Plunger Camshaft Camshaft Camshaft Oil Cooling by...
  • Page 331 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 33 Terraplane Hudson Six Hudson Eight ENGINE—(Cont’d) Removable Removable Removable Valve Stem Guides 44 lbs. ® 2" 44 lbs. ® 2" 44 lbs. ® 2" Valve Spring Pressure 102 lbs. ® 1-21/32" 102 lbs. ® 1-21/32"...
  • Page 332 SECTION 23 MECHANICAL PROCEDURE MANUAL Page 34 Terraplane Hudson Six Hudson Eight TRANSMISSION—(Cont’d) Gear Ratios—(Cont'd) Lubricant—Summer S.A.E. 90 E.P. S.A.E. 90 E.P. S.A.E. 90 E.P. Winter S.A.E. 80 E.P. S.A.E. 80 E.P. S.A.E. 80 E.P. Capacity (Pts.) Bearings: Mainshaft Pilot...

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