Chevrolet 40 Series 1972 Service Manual
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Chevrolet 40 Series 1972 Service Manual

Chevrolet 40 Series 1972 Service Manual

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40-60 SERIES TRUCK
SUPPLEMENT
SERVICE MANUAL

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  • Page 1 40-60 SERIES TRUCK SUPPLEMENT SERVICE MANUAL...
  • Page 2 1971 40-60 ENGINE FUEL SYSTEM Truck Service Manual. It includes procedures for main­ tenance and adjustments, minor service operations, and removal and installation for components of Chevrolet Series AIR COMPRESSOR through Trucks. Procedures involving disassembly AND GOVERNOR and assembly of major components for these vehicles are...
  • Page 3 Sec. 0 Page 1 SECTION 0 Jluhnicatio-n A ll inform ation contained in S erv ice Manual S T -331-71 under LUBRICATION (SEC. 0, Page 1 through 12) w ill apply to v e h ic le s cov­ e red by th is publication. The follow ing inform ation w ill a lso apply: TRANSMISSION CAPACITY CHART ENGINE OIL FILTER...
  • Page 4 S e c . 0 Page 2 LUBRICATION ENGINE A N D ACCESSO RY c e n te r s. Check fluid le v e l every 6,000 m ile s or 4 m onths, w hichever o ccu rs fir s t. F ill pump r e s e r ­ LUBRICATION voir to proper le v e l.
  • Page 5 Sec. 3 P age 3 SECTION 3 S u d s K t& n d A X U l SECTION 3A fy n x w < f* u n e + A ll inform ation and alignm ent in stru ction s in S erv ice Manual S T -331-71 "FRONT END ALIGNMENT”...
  • Page 6 S ec . 3 P ag e 4___________ r o n t a x l e 9 Gasket 1 Steering Knuckle Fitting Spindle L u b e 11 Spacers or Shims 2 Steering Knuckle 12 Axle Center Bushing 13 Stop Bolt & Lock Nut 3 Kingpin Bushing 14 Thrust Bearing (Upper)
  • Page 7 SECTION 3C f y n & n t S fJ S U w a A . A ll inform ation on Front Springs contained in S erv ice Manual ST -3 3 1 -71 “ FRONT SPRINGS" (SEC. 3C) is applicable to m odels co v ered by this supplem ent.
  • Page 8 S e c . 3 P a ge 6 FRONT HUBS A N D BEARING S Side Ring Lock Ring Wheel W heel Stud Nut W heel Stud B rake Drum Cap Screw & W asher B earing Cone and R oller A ssy .
  • Page 9 S ec. 4 P ag e 7 SECTION 4 ( le a / i S u A s n e t t & io s t A ll inform ation contained in S erv ice Manual S T -331-71 is ap­ p lica b le to m odels covered in th is supplem ent.
  • Page 10 S e c . 4 P a ge 8 SECTION 4B (lea l BpAitUfi an d Suifiesutiott HEN DRICKSO N T AN D EM REAR SUSPENSION R efer to S erv ice Manual S T -331-71 "REAR SPRINGS AND SUS­ PENSION”...
  • Page 11 Sec. 5 P age 9 SECTION 5 lin & k e A , A ll inform ation in this sectio n in S erv ice Manual S T -331-71 a lso applies to v e h ic le s covered by this supplem ent, except as sp e c ific a lly stated in the follow ing procedures: ■...
  • Page 12 Se c . 5 P a ge 10 SECTION 5B A i/ i B 'la k e i AIR LINE TORQUE BREATHER A N D FILTER ASSEMBLIES R efer to page 5B -53 of S erv ice Manual ST- F igu res 1 and 2 illu stra te three different 331-71 and change the follow ing torque values: breather and filter a sse m b lie s.
  • Page 13 Sec. 6A P age 11 SECTION 6A Q a d -a lln e . C n c u n e A , The inform ation pertinent to truck m odels covered by th is Supple­ ment is the sam e as given in S erv ice Manual S T -331-71 (pages 6A-1 thru 6A -34) with the follow ing excep tion s an d /or additions: ENGINE MAINTENANCE SPARK PLUGS...

  • Page 14: Exhaust

    S e c . 6A Page 12 G A SO LIN E ENGINES 12 months or 12,000 m iles (whichever o ccu rs first) when the v eh icle is used under the follow ing con- FLYWHEEL H O U SIN G ditionsi •...
  • Page 15 S e c . 6A P ag e 13 GASOLINE ENGINES TUNE-UP CHART (IN-LINE ENGINE) Except as otherw ise indicated, the follow ing specificatio ns apply to both engine models. ENGINE TYPE AND NUMBER OF CYLIN D ERS ......In-Line, -Cyl.
  • Page 16 S e c . 6A Page 14 G ASO LINE ENGINES TUNE-UP CHART (V6 ENGINE) TYPE AND NUMBER OF C Y L IN D E R S ........60°, V-6 FIRING ORDER 1-6-5-4-3-2 COMPRESSION RATIO...

  • Page 17: Dwell Angle (Degree)

    Sec. 6A P age 15 GASOLINE ENGINES TUNE-UP CHART (V8 ENGINE) Except a s otherw ise indicated, the follow ing sp e cifica tio ns apply to all V Point Opening engines. New ..........ENGINE M O D E L S .
  • Page 18 S e c . 6D P age 16 SECTION 6D ' t u j i n e a u + U i + u j A . A ll inform ation in ENGINE MOUNTINGS (SEC. 6D) of S ervice Manual S T -331-71, pages 6D-1 through 6D -3 applies to v e h ic le s cov­ ered by this supplem ent with the follow ing excep tions or additions: ENGINE CU SHIO N BOLT A N D NUT TORQUE Nut Torque...
  • Page 19 Sec. 6D P age 17 ENGINE MOUNTINGS W A SH ER •BOLT W ASHER LOCK ‘ > " V W ASHER N UT FR O N T M O U N T IN G BOLT Figure 1—En g in e Front M ount w ith A T 4 7 5 Transm ission (Typical)
  • Page 20 SECTION 6K S 't K f i n e G o a U r u j, S y d t e m Inform ation pertinent to truck m odels covered by th is supplem ent is the sam e as explained in S erv ice Manual S T -331-71 ENGINE COOL­ ING SYSTEM (SEC.

  • Page 21: Engine Cooling System

    Sec. 6K Page 19 ENGINE COOLING SYSTEM COOLING SYSTEM CORROSION b. F ill cooling sy ste m to le v e l of fille r cap PREVENTION se a t. c. Attach te s te r to fille r neck follow ing the NOTE: Addition of supplem ental additives and in stru ction s supplied with te ste r .
  • Page 22 S e c . 6K P age 20 ENG INE C O O L IN G SYSTEM V-BELT TENSION tio n s are required b ecau se of coolant lo s s or to provide additional protection against freezin g at Fan belt tension on v eh icles equipped with tem peratu res low er th an -2 0 F .,( - 3 2 F.inCanada), V -b elts should be adjusted to 120-130 pounds on...
  • Page 23 Sec. 6M P age 21 SECTION 6M f y u e l S if d i& o lin e C '+ U f U te A GOVERNORS HOLLEY INTERNAL -VA CU U M GOVERNOR TEST TYPE GOVERNOR The following procedure should be u sed to help (Refer to Schem atic Figure 1) locate the cause for lo s s of governor control: U sing a tachom eter, check engine governed...
  • Page 24 S e c . 6M P a ge 22 FUEL SYSTEM— GASOLINE ENGINES then se ttle to governed speed which is a normal a g es behind it. If the engine governs at light load and does condition. If there is no governor control, perform not govern at w ide-open throttle the problem is the following: probably in the secondary control valve.
  • Page 25 Sec. 6M P age 23 FUEL SYSTEM—GASOLINE ENGINES IDLE VEN T VALVE FUEL INLET A N D FILTER IDENTIFICATIO N NUMBER ACCELERATOR PUMP ROD C H O K E ROD IDLE SPEED SCREW PLASTIC LIMITER CAPS DISTRIBUTOR (IDLE MIXTURE SCREW) THROTTLE LEVER LINE PORT Figure 3 —M odel 2 G Rochester C arburetor...
  • Page 26 S ec. 6M Page 24 FUEL SYSTEM— GASOLINE ENGINES 9/16" W RENCH SO L E N O ID STOP PIN IDLE MIXTURE SCREW PLASTIC CAP SCREW DRIVER Figure 5 — Adjusting Idle Speed (In-Line EngineI T-9134 5. Adjust idle speed as follow s: Figure 7 —...
  • Page 27 Sec. 6M P age 25 FUEL SYSTEM—GASOLINE ENGINES T-9137 Figure 9 —In sta llin g Plastic Lim iter C a p Figure J 0 —Rem oval of Plastic Lim iter C a p s (M odel M Rochester Carburetor) (M odel 2 C Rochester Carburetor) REPLACING PLASTIC LIMITER CAPS 2.
  • Page 28 Sec. 6M Page 26 FUEL SYSTEM— GASOLINE ENGINES ------— PLASTIC C A P S 1 B O S S O N THROTTLE BODY PLASTIC CAPS T A N G S SCREW DRIVER Figure 12— Installing Plastic Limiter Caps (M odel 2 G Rochester Carburetor) Figure 11 —...
  • Page 29 Sec. 6M P age 27 FUEL SYSTEM—GASOLINE ENGINES S EC O N D A R Y AIR VEN T PRIMARY CARBURETOR A N D FUEL TRANSFER VALVE FUEL B O W L AIR H O R N TUBE FUEL B O W L CHOKE PLATE PART NUM BER IDLE...
  • Page 30 Se c . 6M P ag e 28 FUEL SYSTEM— GASOLINE ENGINES Figure 18— Positioning Plastic Limiter Cap For Installation (Holley Carburetor) Figure 7 — R em oving Plastic Limiter Caps (Holley Carburetor) Figure 19— Installing Plastic Limiter Cap (Holley Carburetor) REPLACING PLASTIC LIMITER CAPS O N IDLE MIXTURE SCREWS m ajor carburetor repair or replacem ent which...

  • Page 31: Series

    Sec. 6M Page 29 FUEL SYSTEM—GASOLINE ENGINES 4. Adjust engine idle speed scr ew (fig. 13) p la stic cap, as shown. Pry p la stic cap from each idle m ixture until engine idle speed is 600 rpm. 5. With engine running at idle sp eed , adjust screw .
  • Page 32 S e c . 6M P ag e 30 FUEL SYSTEM— GASOLINE ENGINES M A IN DISCHARGE JETS VENT TUBE IDLE SPEED SCREW IDENTIFK HIGH-SPEED" BLEEDER VIEW A ACCELERATOR PUMP ROD Figure 21 — A djusting V acuum Idle Stop FUEL INLET IDLE MIXTURE SCREW S...
  • Page 33 Sec. 6M P age 31 FUEL SYSTEM—GASOLINE ENGINES Bending Tool B ending Tool Finger H olding Tab V ertic a l B E N D IN G LEVER TO RAISE SETTING B EN D IN G LEVER TO LOW ER SETTING Figure 2 3 —Typ ica l Use of B e n d in g Tool To Set Float Level REPLACING PLASTIC LIMITER sim p ly in sert tip s of screw d river blades behind...
  • Page 34 S e c . 6M P a ge 32 ____________________________________ FUEL SYSTEM— GASOLINE ENGINES Adjust the plunger with a 3 /8 -in c h open end w rench until the face of the plunger hex contacting the carburetor throttle lev er resu lts in the idle speed given e a r lie r in Step 4.
  • Page 35 Sec. 6M P a ge 33 FUEL SYSTEM—GASOLINE ENGINES ROCHESTER CARBURETOR SPECIFICATIONS CA R B U R ETO R “M ” “2G " M O D EL N U M B ER 7042012 7030699 Carburetor N u m b e r ..... 7042011 7042134 7042124...
  • Page 36 Sec. 6M P a ge 34 ubielel Ctupitte A ll inform ation in S ervice Manual S T -331-71 pertaining to ENGINE FUEL SYSTEM (SEC. 6M), pages 6M-1 through 6M -26 is applicable to m od els covered by this supplem ent with the exception of the following: ACCELERATOR LINKAGE ADJUSTMENT (STEEL TILT CAB MODELS)

  • Page 37: General Information

    Sec. 6T Page 35 SECTION 6T GosnfLSiedAxM a n d Cj&ue/istosiA, S erv ice inform ation applicable to air co m p re sso r s and governors used on v e h ic le s covered by this Supplement rem ains the sam e as covered on pages 5D -80 through 5D -93 in AIR COMPRESSORS AND GOVERNORS (SEC.
  • Page 38 Sec. 6T P age 36________________________________________ AIR COMPRESSOR A N D G O V ERN O R NOTE The air com p ressor is the ONLY sou rce of supply for the veh icle braking sy stem . Faulty operation of the com p resso r w ill resu lt in im ­ proper function of brakes.
  • Page 39 Sec. 6Y Page 37 SECTION 6Y £ n a in e Z le c t t U c a l NOTE: E le c tric a l sy stem inform ation applicable m odels covered by this supplem ent rem ains the sam e as covered on pages 6Y-1 through 6Y -68 in ENGINE ELECTRICAL (SEC.
  • Page 40 S e c . 6Y P a g e 38 BATTERY BATTERY MODEL APPLICATION CHART (CONT.) TRUCK SERIES OPTIONAL MODEL PART NO. E-3000 S e r ie s T E /T M -50; T E /T M -60 .........1980038 8D-250 S e r ie s C G /SG /T G -50 ..............
  • Page 41 Sec. 6Y P age 39 STARTING SYSTEM BATTERY SPECIFICATIONS 1980758 PA R T N O . 1980030 1980038 1980046 1980145 1980149 Delco-Remy Delco-Remy Delco-Remy Delco-Remy Delco-Remy Delco-Rem y Make E-5000 E-3000 Model No. 8D-250 E-5000 E-5000 20T-4A Catalog No. R-59 Y-71 985 R -89 R-89W...
  • Page 42 Se c . 6Y P age 40 STARTING SYSTEM € > j- * 0 0 B L K — ||l> FRAME — — (AMMETER. SH UNT)' STARTER ASM. FRAME TO AMMETER AND VOLTMETER 1 1 0 BLK. (AMMETER SHUNT)' STARTERASM. TRANSISTORIZED VOLTAGE REGULATOR GENERATOR »...
  • Page 43 Sec. 6Y P age 41 STARTING SYSTEM STARTING SYSTEM SPECIFICATIONS 1108360 (a) 1108369 STA RTER M O D EL 1108362 (b) 1108372 110836/ 1108368 M a k e......Delco-Remy Delco-Remy Delco-Remy...

  • Page 44: Spark Plugs

    Sec. 6Y P age 42 9 < f4 u tiQ Ignition sy ste m information applicable to v e h ic le s covered by this supplem ent rem ain s the sam e as covered under ‘‘IGNITION SYSTEM” pages 6Y-17 through 6Y-31 in ENGINE ELECTRICAL (SEC.
  • Page 45 Sec. 6Y Page 43 (NON-INTEGRAL TYPE) A non-integral (generator and separate regulator) or an integral (generator with a so lid state regulator built in) type generating sy stem is used on v e h ic le s covered by this supplem ent. Inform ation applicable to the non-integral type alternating current generating sy ste m rem ains the sam e as covered under ''ALTERNATING CURRENT GEN­...
  • Page 46 S ec . 6Y Page 44 A. C. GENERATING SYSTEM (NON-INTEGRAL TYPE) Figure 1 — Schematic D iagra m of A. C harging Circuit with Two Unit Type Regulator (Typical) O - ~ * 0 0 8LK.— ||l' FRAME FUSIBLE LINK GAS MODELS -(A M M ETER.
  • Page 47 Sec. 7A Page 45 SECTION 7 \anA M uA A io-n c u i J l G lu tc h e i A ll inform ation in Service Manual S T -331-71 pertaining to TRANS­ MISSIONS AND CLUTCHES is applicable to m odels covered by this supplem ent with the addition of the following: SECTION 7A GanfruU Jlinkacje.
  • Page 48 Sec. 7B P age 46 TRA N SM ISSIO N ON-VEHICLE SERVICE DOWNSHIFT SWITCH ADJUSTMENT NOTE: Pull secondary w ire out of center NOTE: The downshift sw itch mounted at the sock et in the distributor cap and ground w ire to carburetor is activated by the carburetor throttle prevent p o ssib le damage to coil.
  • Page 49 Sec. 7B Page 47 TRANSMISSION ON-VEHICLE SERVICE 11. P lace a support under rear of engine and rem ove tran sm ission exten sion -to-en gin e rear support bolts (fig. 3). Then rem ove engine rear support from fram e of veh icle. 12.
  • Page 50 Sec. 7B P age 48 TRA N SM ISSIO N ON-VEHICLE SERVICE AT475 AUTOMATIC T RA N SM ISSIO N hole in center of flyw heel flex-p late assem bly. LUBRICATION DETAILS 2. Install bolts and w ash ers that attach trans­ m issio n c a se to flyw heel housing.

  • Page 51: Series

    Sec. 7C Page 49 AUXILIARY TRANSMISSIONS OIL COOLER, LINES, W henever an internal difficulty occu rs in the tran sm ission which would resu lt in clutch plate AND BY-PASS SYSTEM IMPORTANT: The v e h icle's radiator not only m aterial or m etal p a r tic le s being...
  • Page 52 Se c . 7C Page 50 AUXILIARY TRA N SM ISSIO N S NOTE: See Chart for Dimension " A " T - 9 U 9 Figure 2 — Auxiliary Transmission M o u n tin g AUXILIARY TRANSMISSION APPLICATION AND ALIGNMENT DATA CHART (use in conjunction with Figure 2) D IM E N SIO N R E A R...
  • Page 53 Sec. 7D & E Page 51 CLUTCHES SECTION 7D C lu tch Go-nbi&U. MECHANICAL LINKAGE ADJUSTMENT The 1972 m echanical clutch controls used on conventional cab and cowl m odels rem ain the sam e as shown in S T -331-71 pages 7D -1 to 7D -3 with the exception of the r e le a se bearing clea ra n ce.
  • Page 54 S e c . 7E P age 52_____ CLUTCHES A ll inform ation pertaining to CLUTCHES as d escrib ed in ST -331-71 pages 7E -1 to 7E -5 is applicable to m odels covered by th is supplem ent with the addition of the following: It is im portant when installing the B org &...
  • Page 55 Sec. 9 Page 53 SECTION 9 Steestinxj, S u iiem T his section is divided into two separate sectio n s as shown in the follow ing Index: Section P age No. M echanical S t e e r i n g ............Power Steering ..............
  • Page 56 Sec. 9B P age 54 POWER STEERING 1 Cotter Pin 8 Tie Rod Tube 2 Nut 9 End Clamp and Bolt 3 Steering Arm 10 Washer 1 Cotter Pin 7 End Clamp 11 G rease Cavity 4 Stud 2 Nut 8 G rease Cavity 5 Rubber Dust Cover 12 Lube Fitting...

  • Page 57: Power Steering Fluid

    Sec. 9B P age 55 POWER STEERING Actual conditions w ill dictate replacem ent inter­ v a ls, how ever, under norm al conditions rep lace­ ment on a sem i-annual b a sis should be sufficient. To help prevent repeated fa ilu re s, it is r e c ­ omm ended that th is filter be in stalled at time of overhaul on any unit experiencing a power steering component fa ilu re.
  • Page 58 Sec. 9B Page 56 POW ER STEERING A satisfactory steerin g sy stem depends upon maintaining components in good condition, with a minimum amount of wear perm itted . Proper align­ ment, and lubrication w ill pay dividends in driver satisfaction, and in tire econom y.
  • Page 59 Sec. 10 Page 57 SECTION 10 'U / h e e li a tu H A ll inform ation pertaining to WHEELS AND TIRES (SEC. 10) of S ervice Man­ ual S T -331-71 is applicable with addition of the following: WHEEL STUDS OR BOLTS GENERAL DESCRIPTION AND NUTS...
  • Page 60 Sec. 10 Page 58 WHEELS A N D TIRES F reezin g of Nut T his condition r e su lts from one of two b a sic causes: 1. C orrosion or galling of the stud and nut a ssem b ly can reach a point w here rem oval of cap nuts is difficult.
  • Page 61 Sec. 10 Page 59 WHEELS AND TIRES Figure 5 —W orn W heel Stud Holes and C racked Disc W heels com m on to overloaded rim s and dangerous. C are­ Damaged or Sprung Rings ful checks should be made for this condition be­ Broken or cracked rin gs as shown in figure 7, fo re tir e mounting and defective parts are replaced.
  • Page 62 Sec. 10 Page 60 WHEELS A N D TIRES Bead sea t a rea s of rim should be fr ee of rust and rubber d ep osits. T his is esp ecia lly important for drop-center tu b eless rim s, becau se the 15° bead seat is the a ir -se a lin g elem ent.
  • Page 63 Sec. 10 Page 61 WHEELS AND TIRES extrem ely fa st turn, the weight is shifted from an form s of abuse and c o sts truck ow ners la rg e sums of money annually. This trem endous w aste can be even loading on all w heels to an abnormal load on avoided if trucks are equipped with tir e s and rim s the tir e s on the outside of the curve and very light...
  • Page 64 Sec. 10 Page 62 WHEELS A N D TIRES l = d TOE-IN CAMBER « SPRUNG OR SA G G IN G AXLE TOE-OUT t-8289 Figure 10— M echanical Irregularities r e a r . When to e-in is e x c e ssiv e the tire wear shows tir e to carry the greater load.
  • Page 65 Sec. 10 Page 63 WHEELS AND TIRES Fig u re 11 — Types of Tire M easurem ent In addition to matching individual tir e rolling one axle and mount the two sm a lle st on the opposite sid e of the sam e axle. radii or rolling circu m feren ce, we recom m end 5.

  • Page 66: Tire Rotation

    Sec. 10 P age 64 WHEELS A N D TIRES tir e s and by using w ell worn tir e s on th ese w h eels, lo s s on tir e s due to road hazards is m inim ized. NOTE: When rotating any tir e , follow reco m ­...
  • Page 67 Sec. 10 P age 65 WHEELS AND TIRES drive a x les should equal the sum of the circum fer­ en ces of the 4 tir e s on the rear of the tandem axles. T h is'p recau tion is n e c essa r y to prevent e x c e ssiv e w ear from slippage.
  • Page 68 Sec. 10 Page 66 WHEELS A N D TIRES TUBE BREAKS NEXT TO THE VALVE m arking p ro tects against the danger of m isu sing Im proper inflation procedure may cause a c ir ­ the flap with the wrong s iz e tir e and rim . cum ferential crack or tear in the valve base at the New flaps and tubes should be used after tir e or rim rep a irs.
  • Page 69 Sec. 10 Page 67 WHEELS AND TIRES M O U N T IN G D E M O U N T IN G Completely deflate tire by removing valve core or A fter applying tire and tube in usual manner, using deflator cap.
  • Page 70 Sec. 10 Page 68 WHEELS A N D TIRES M O U N T I N G D E M O U N T I N G C o m p le te ly d eflate tir e , th e n w ith cu rv e d end o f To fa s te n side rin g , p lace fo o t a t one end n e a r th e rim to o l a n d h o o k ed -en d rim to o l p r y b e a d loose s p lit an d p u sh dow n in to p lace.
  • Page 71 Sec. 10 P age 69 WHEELS AND TIRES M O U N TIN G Be sure right valve is used and is Push first bead into well of rim and Hold second bead in well by standing properly installed in the rim. Inspect onto rim as far as possible.
  • Page 72 Sec. 10 Page 70 WHEELS A N D TIRES M OUNTING Insert straight end of rim tool in The two cutaway portions opposite Place disc portion of wheel on floor operating notch (point B ), then pull each other in the inner diam eter of the with rim gutter up.
  • Page 73 Sec. 10 P age 71 WHEELS AND TIRES MOUNTING T o a p p ly second bead, start at point op p osite P la ce h alf of sid e ring under th e rim lip w ith P la ce tire on rim so th a t valve is in lin e w ith valve an d press tire bead over rim lip and into c u taw ay portion s in p osition as show n.
  • Page 74 Sec. 10 P age 72 _______________ WHEELS A N D TIRES TIRE BA LAN CIN G W A R N IN G WARNING: When balancing tir e s on the truck, follow the equipment m anufacturer's instructions carefully. On trucks which do not have M aximum Traction, drive wheel spin should be lim ited to 35 mph as indicated on the speedom eter.
  • Page 75 WHEELS AND TIRES RIM AND WHEEL SAFETY PRECAUTIONS CAUTION An inflated tire and rim can be very dangerous. Many accid en ts, som e fatal, have resu lted from improper handling and operation of truck r im s and w h eels. It is , therefore, of the utm ost im portance that the p recautions outlined in th is section be carefully noted by all p erso n s concerned in order to avoid personal injuries and costly damage.
  • Page 76 Sec. 10 Page 74 WHEELS A N D TIRES Figure 20— Rim and Wheel Safety Precautions...
  • Page 77 Sec. 10 P age 75 WHEELS AND TIRES in which there is p r e ssu r e (fig. 20, View D). U se only a ccu rate, tested gauges to ensure proper air p r e s s u r e . Check all gauges regularly with a m aster gauge.
  • Page 78 Sec. 10 Page 76 WHEELS A N D TIRES W HAT HAPPENS WHEN avoid accum ulation of g rea se or o il around brake drum a r e a s. O perators carrying cargo which is TIRES GET HOT exp losive or readily com bustible should check tir e s at 5 0 -m ile in tervals and should a lso u se a p r e ssu r e As a tir e b ecom es heated, the air in the tire...
  • Page 79 Sec. 10 P age 77 WHEELS AND TIRES SPECIFICATIONS W H E E L N U T T O R Q U E CAST TYPE WHEELS Tighten nuts as d irected in text to: F r o n t ..................... 190-210 foot-pounds R ear .....................
  • Page 80 Sec. 10 P age 78 WHEELS A N D TIRES SPECIFICATIONS (CONT.) TIRES USED AS DUALS TIRE LOAD LIMITS AT VARIOUS INFLATION PRESSURES TIRE IDENTIFICATIO N LOAD SIZE RANGE 2 4 6 0 2 6 4 0 2 80 0 2 96 03 1 2 0 3 2 7 0 3 4 1 03 5 5 0...
  • Page 81 Sec. 11 Page 79 SECTION 1 1 S h eet M etal A ll inform ation pertaining to SHEET METAL as d escrib ed in S erv ice Manual S T -3 3 1 -7 1 , pages 11-1 through 11-8 is applicable to m od els covered in th is Supplement with addition of the following: HOOD ALIGNMENT Hood alignm ent blocks (see fig s .
  • Page 82 S ec . 12 P age 80 SECTION 12 GhadAid, SlectsUccd ana 9MAbiumetiti NOTE: E lectrica l system inform ation applicable to m odels cov­ ered by this supplem ent rem ains the sam e as covered on p ages 12-1 through 12-52 in CHASSIS ELECTRICAL AND INSTRUMENTS (SEC.
  • Page 83 S e c . 12 P a g e 81 CHASSIS ELECTRICAL AND INSTRUMENTS SPECIFICATIONS (Cont.) ELECTRIC HORN ..............Delco-Remy F r e q u e n c y .
  • Page 84 P age 82 9 + i d e * . Subject P age No. Page No. Subject Hubs and B ea rin g s, Front ........A ir C leaners ............A ir S u s p e n s io n ............Alignm ent, Front End ..........
  • Page 85 MODEL DATA E N G IN E C L U T C H F R O N T A X L E R E A R A X L E T R U C K T R A N SM ISSIO N SE R IE S S T D .
  • Page 86 T ----- >pv I " ’ CHEVROLET SERVICE ■ji...

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