Jacobsen 67971 – LF 3400 Parts & Maintenance Manual
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Jacobsen 67971 – LF 3400 Parts & Maintenance Manual

Jacobsen 67971 – LF 3400 Parts & Maintenance Manual

Lightweight fairway mower with rops
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See also: Dealer's Manual
Parts & Maintenance
Manual
Lightweight Fairway Mower with ROPS
67971 – LF 3400
67972 – LF 3400
67958 – LF 3800
67959 – LF 3800
67960 – LF 3400
67961 – LF 3800
If incorrectly used, this machine can cause severe injury. Those who use
and maintain this machine should be trained in its proper use, warned of its
dangers, and should read the entire manual before attempting to set up,
operate, adjust, or service the machine.
GB
™
, Kubota V1505-E3B, 5 Gang, 2WD
™
, Kubota V1505-E3B, 5 Gang, 4WD
™
, Kubota V1505-E3B, 5 Gang, 2WD
™
, Kubota V1505-E3B, 5 Gang, 4WD
Turbo, Kubota V1505-T-E3B, 5 Gang, 4WD
™
Turbo, Kubota V1505-T-E3B, 5 Gang, 4WD
™
WARNING
4179107-Rev B
6
5
9
1 1
1 6
1 5
1 3
7
8
1 8
1 7
1 - I N C L U D E S I T E M S 3 - 1 6
1 9
3
4
1 0
When Performance Matters.
™

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Summary of Contents for Jacobsen 67971 – LF 3400

  • Page 1 4179107-Rev B 1 - I N C L U D E S I T E M S 3 - 1 6 Parts & Maintenance Manual Lightweight Fairway Mower with ROPS 67971 – LF 3400 ™ , Kubota V1505-E3B, 5 Gang, 2WD 67972 –...

  • Page 2: Service Parts

    Jacobsen Dealer. Suggested Stocking Guide To Keep your Equipment fully operational and productive, Jacobsen suggests you maintain a stock of the more commonly used maintenance items. We have included part numbers for additional support materials and training aids. To order any of the following material: 3.

  • Page 3: Table Of Contents

    Table of Contents 1 Safety 4 Maintenance Operating Safety ..........4 General ............18 Important Safety Notes ........5 Engine ............18 2 Specifications Engine Oil ............ 18 Product Identification ........6 Air filter ............19 V1505-E3B Engine ........6 Fuel ............. 19 V1505-T-E3B Engine ........6 Fuel System ..........

  • Page 4: Safety

    (vertically), not across the face (horizontally). the job. Only use accessories and attachments approved by Jacobsen. 21. To prevent tipping or loss of control, do not start or stop suddenly on slopes. Reduce speed when making sharp Stay alert for holes in the terrain and other hidden turns.

  • Page 5: Important Safety Notes

    Adjustments and maintenance should always be performed by a qualified technician. If additional information or service is needed, contact your Authorized Jacobsen Dealer who is kept informed of the latest methods to service this equipment and can provide prompt and efficient service.

  • Page 6: Specifications

    67972......LF 3400, 4WD with ROPS, uses 5 CHARLOTTE, A T extron Compa n y NC 28241, USA in. (127 mm) diameter reel Jacobsen.com 1-800-848-1636 (US) 67958......LF 3800, 2WD with ROPS, uses 7 PRODUCT OF U.S.A. 670.4 892.0 369.8 25.0...

  • Page 7: Mower

    SPECIFICATIONS MOWER__________________________________________________________________ Tires: Speed: Front ......26.5 x 14 - 12: (4 ply) Mow ......0 - 7 mph (0 - 11 kph) Rear ......20 x 10 - 8: (2 ply) Transport - 2 WD..0 - 12 mph (0 -19 kph) Pressure ....10-12 psi (69 - 83 kPa) Reverse ....

  • Page 8: Declaration Of Conformity

    Valmistajan toiminimi ja täydellinen osoite ▪ Nom commercial et adresse complète du fabricant ▪ Firmenname und vollständige Adresse des Herstellers ▪ Jacobsen, A Textron Company Επωνυμία και ταχυδρομική διεύθυνση κατασκευαστή ▪ A gyártó üzleti neve és teljes címe ▪ Ragione sociale e indirizzo completo del fabbricante ▪...
  • Page 9 Plaats en datum van de verklaring ▪ Deklaratsiooni väljastamise koht ja kuupäev ▪ Vakuutuksen paikka ja päivämäärä ▪ Lieu et date de la déclaration ▪ Jacobsen, A Textron Company Ort und Datum der Erklärung ▪ Τόπος και ημερομηνία δήλωσης ▪ A nyilatkozat kelte (hely és idő) ▪ Luogo e data della dichiarazione ▪...

  • Page 10: Accessories

    SPECIFICATIONS ACCESSORIES____________________________________________________________ Refer to the Parts Catalog and contact your area Jacobsen Dealer for a complete listing of accessories and attachments. CAUTION Use of other than Jacobsen authorized parts and accessories may cause personal injury or damage to the equipment.

  • Page 11: Adjustments

    ADJUSTMENTS ADJUSTMENTS GENERAL ________________________________________________________________ adjustment cannot be made, contact an authorized Jacobsen Dealer. WARNING Replace, do not adjust, worn or damaged components. To prevent injury, lower implements to the ground, Do not wear jewelry or loose fitting clothing when disengage all drives, engage parking brake, stop engine, making adjustments or repairs.

  • Page 12: Bedknife Adjustment

    ADJUSTMENTS BEDKNIFE ADJUSTMENT __________________________________________________ Read Section 3.2 before making the adjustment. Note: Avoid excessive tightening or damage may occur to bedknife and reel blades. Reels must turn freely. CAUTION To prevent personal injury and damage to the cutting edges, handle the reel with extreme care. Start adjustment at leading end of reel, followed by the trailing end.

  • Page 13: Flash Attach

    ADJUSTMENTS FLASH ATTACH ___________________________________________________________ Installing Cutting units Carefully raise arm until cutting unit can be removed. Place each cutting unit in front of its respective lift arm. Raise lift arm and position cutting unit so that yoke (T) is in line with swivel housing (S). Carefully lower arm onto yoke.

  • Page 14: Mow Speed

    ADJUSTMENTS MOW SPEED _____________________________________________________________ Cutting quality is better at speeds well below the transport speed of the mower. An initial mow speed of five to six mph is set at the factory and should be satisfactory for most cutting conditions. Local turf conditions however may respond better to a different speed.

  • Page 15: Neutral Adjustment

    ADJUSTMENTS 3.10 NEUTRAL ADJUSTMENT ___________________________________________________ Neutral adjustment can only be made at the drive pump. Connect traction linkage. When connecting linkage at traction pedal, make sure pointer on traction pedal The neutral adjustment is preset at the factory on all new bracket is centered over neutral switch (M -Figure 3K).

  • Page 16: Front Reel Limit Switch

    ADJUSTMENTS 3.12 FRONT REEL LIMIT SWITCH ________________________________________________ The front left and right lift arms are equipped with proximity Start engine and check that reels turn off when raised. switches, which signal the controller to turn off the reels.The switches are mounted to the mower frame directly behind NOTICE the lift arms.

  • Page 17: Torque Specification

    All torque values included in these charts are approximate and are for reference only. Use of these torque values is at your sole risk. Jacobsen is not responsible for any loss, claim, or damage arising from the use of these charts.

  • Page 18: Maintenance

    If the injection pump, injectors, or the fuel system require engine. service, contact an authorized Jacobsen Dealer. During the break-in period, Jacobsen recommends the NOTICE following: The mower is designed to operate and cut most During the first 50 hours of operation, a new engine efficiently at the preset governor setting.

  • Page 19: Air Filter

    MAINTENANCE AIR FILTER _______________________________________________________________ Check the service indicator daily. If red band appears in the Reassemble cap making sure it seals completely window (B) replace the element. around the filter housing. Dust evacuator must be facing down. Do not remove the element for inspection or cleaning. Check all hoses and air ducts.

  • Page 20: Battery

    MAINTENANCE BATTERY ________________________________________________________________ Make absolutely certain the ignition switch is OFF and the Verify battery polarity before connecting or disconnecting the battery cables. key has been removed before servicing the battery. When installing the battery, always assemble the RED, positive (+) battery cable first, and the ground, BLACK, CAUTION negative (-) cable last.

  • Page 21: Muffler And Exhaust

    4.12 HYDRAULIC OIL___________________________________________________________ Refer to Section 6.2 for specific maintenance intervals. After oil has drained install drain plug and fill with Jacobsen Hydraulic oil. Drain and replace the hydraulic oil after a major component Purge air from system. failure, or if you notice the presence of water or foam in the oil, or a rancid odor (indicating excessive heat).

  • Page 22: Hydraulic Filters

    If the interlock does not function properly and the problem cannot be corrected, contact an authorized Jacobsen Dealer. Keep the wire harness and all individual wires away from moving parts to prevent damage. Make sure the seat switch harness is connected to the CIRCUIT BREAKER main wire harness.

  • Page 23: Radiator

    If you have to add coolant more than once a month, or add more than one quart at a time, have a Jacobsen Drain and refill annually. Remove the radiator cap, open the Dealer check the cooling system.

  • Page 24: Wheel Mounting Procedure

    Do not wash any portion of the equipment while it is hot. cleaner wax. Do not use high pressure spray or steam. Use cold water Repair damaged metal surfaces and use Jacobsen touch-up and automotive cleaners. paint. Wax the equipment for maximum paint protection.

  • Page 25: Reel Backlapping

    MAINTENANCE 4.20 REEL BACKLAPPING ______________________________________________________ WARNING To prevent severe injury, keep hands, feet, and clothing away from rotating reels. Carbon monoxide in the exhaust fumes can be fatal when inhaled. Never operate the engine without proper ventilation. Check the reel and bedknife to determine if backlapping or grinding will restore the cutting edge.

  • Page 26: Storage

    MAINTENANCE 4.21 STORAGE________________________________________________________________ General Backlap the reels then back the reel away from the bedknife. Apply a light coat of rust preventative oil to Wash the mower thoroughly and lubricate. Repair and the sharpened edges of the reel and bedknife. paint damaged or exposed metal.

  • Page 27: Troubleshooting

    TROUBLESHOOTING TROUBLESHOOTING GENERAL ________________________________________________________________ The troubleshootijng chart below lists basic problems that may occur during start-up and operation. For more detailed information regarding the hydraulic and electrical systems contact your area Jacobsen Dealer. Symptoms Possible Causes Action Engine will not start.

  • Page 28: Controller Lamps

    TROUBLESHOOTING CONTROLLER LAMPS _____________________________________________________ The controller is a solid state device that monitors and controls an active circuit and will turn an input lamp on, an open switch electrical functions. The controller receives input signals from an inactive circuit and will turn a lamp off. Outputs are active various switches and sensors throughout the machine and when their lights are on.

  • Page 29: Electrical Circuits

    TROUBLESHOOTING ELECTRICAL CIRCUITS ____________________________________________________ When troubleshooting the machine using the controller always check that Program Active lamp (1) is on. These indicate that the controller has power and the program is active. NOTICE The controller requires a minimum of six volts to operate. Individual circuits can be tested by operating an input switch, checking for the required input signal, and looking for a corresponding output.

  • Page 30: Maintenance & Lubrication Charts

    *** Inspect visible hoses and tubes for leaks or oil marks. Pack bearings with NLGI Grade 2 (Service Class GB) Manual grease gun with NLGI Grade 2 (Service Class LB). III Engine Oil - See Section 4.3 IV Jacobsen Hydraulic Oil - SAE 10W30 or Greens Care 68...

  • Page 31: Lubrication Chart

    MAINTENANCE & LUBRICATION CHARTS LUBRICATION CHART______________________________________________________ 11 13 Grease points same for all reels Grease Fittings F1 - 50 Hours (Every Week) Swivel Housing Lift Arm Lift Cylinders Lift Arm Pivot Brake Pedal Pivot Traction Pedal Pivot Ball Joint Steering Pivot Steering Cylinder 10 Axle Pivot F2 - 100 Hours...

  • Page 32: Parts Catalog

    Transportation charges Order by the quantity desired, the part number, and must be prepaid. description of the part as given in the parts list. Use of other than Jacobsen authorized parts will void the warranty.

  • Page 33: Table Of Contents

    PARTS CATALOG TABLE OF CONTENTS______________________________________________________ 1.1 ..Decals ..............34 2.1 ..Hood ............... 36 3.1 ..Seat Pan ..............38 3.2 ..Seat Pan ..............40 3.3 ..Seat Pan ..............42 4.1 ..Instrument Panel ........... 44 5.1 ..Traction Pedal Linkage ......... 46 6.1 ..Brake Pedal Linkage ..........48 7.1 ..Frame and Front Axle..........

  • Page 34: Decals

    LF 3400 / LF 3800 Serial No. All 1.1 Decals 4181865 Ma n u f actured under one or mor e of the f oll o wing U . S . patents : XXXXXX XXXXXX XXXXXX XXXXXX 14 / 15 LF 3400™...
  • Page 35 3008930 Decal, Flash Attach 3008683 Decal, Backlap Located on Front Axle 4181862 Decal, Radiator Cap Warning Located on top of Radiator 4182386 Decal, Jacobsen Emblem 4181865 Decal, Instruction 3008521 Decal, Traction Pedal 3008522 Decal, Brake 4181864 Decal, Battery Warning Located on Controller Housing...

  • Page 36: Hood

    LF 3400 / LF 3800 Serial No. All 2.1 Hood 17 22 LF34-1...
  • Page 37 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 4139087 Hood Assembly, LF 3400/3800 Includes Items 13 ~ 16 on Illustration 1.1 4124443 • Foam, Front 4124437 • Foam, Right Side 4124436 • Foam, Left Side 4124442 •...

  • Page 38: Seat Pan

    LF 3400 / LF 3800 Serial No. 67958 - 1651 ~ 1678 Serial No. 67972 - 1651 ~ 1709 3.1 Seat Pan Serial No. 67959 - 1651 ~ 1695 Serial No. 67961 - 1651 ~ 1671 Michigan Seat Serial No. 67971 - 1651 ~ 1713...
  • Page 39 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 1004279 Floorpan 3009292 Seat Pan 4139241 Support, Seat 4131137 Adjuster, Double Latching 4139237 Base, Seat 400258 Screw, 3/8-16 x 3/4” Hex Head 441602 Carriage Bolt, 5/16-18 x 3/4” 445795 Nut, 5/16-18 Spiralock Flange 446142...

  • Page 40: Seat Pan

    LF 3400 / LF 3800 3.2 Seat Pan Michigan Seat...
  • Page 41 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 1004279 Floorpan 3009292 Seat Pan 4139241 Support, Seat 4131137 Adjuster, Double Latching 4139237 Base, Seat 400258 Screw, 3/8-16 x 3/4” Hex Head 441602 Carriage Bolt, 5/16-18 x 3/4” 445795 Nut, 5/16-18 Spiralock Flange 446142...

  • Page 42: Seat Pan

    LF 3400 / LF 3800 3.3 Seat Pan Harita Seat...
  • Page 43 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 1004279 Floor Pan 3009292 Seat Pan 4185267 Support, Seat 4131137 Adjuster, Double Latching 4221081 Base, Seat 400258 Screw, 3/8-16 x 3/4” Hex Head 441602 Carriage Bolt, 5/16-18 x 3/4” 445795 Nut, 5/16-18 Spiralock Flange 446142...

  • Page 44: Instrument Panel

    LF 3400 / LF 3800 Serial No. All 4.1 Instrument Panel 8 (4WD Units) 10 (2WD Units) 32 / 34 32 / 33 7 Ref...
  • Page 45 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 4130114 Instrument Panel Includes silk screen decals 4129683 Hour Meter, Quartz REFERENCE U-3, See 46.1 365943 Fuel Gauge REFERENCE U-2, See 46.1 3005121 Water Temperature Gauge REFERENCE U-1, See 46.1 1004290 Joystick, 1 Axis REFERENCE SW-12, See 46.1...

  • Page 46: Traction Pedal Linkage

    LF 3400 / LF 3800 Serial No. All 5.1 Traction Pedal Linkage LF34-4...
  • Page 47 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 1003288.7 Hydro Pivot Assembly 352726 • Bushing 3007230 Stop, Mow Speed 3003474 Grip, Pedal 3003475 Grip, Pedal 366974 Rod End 4125831 Switch, Proximity REFERENCE SW-7, See 46.1 3006327 Shaft, Turn Assist 333542 Tie Stud...

  • Page 48: Brake Pedal Linkage

    LF 3400 / LF 3800 Serial No. All 6.1 Brake Pedal Linkage LF34-5...
  • Page 49 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 4142455 Bracket, Brake 4125831 Switch, Proximity REFERENCE SW-8, See 46.1 3006327 Shaft, Turn Assist 3007606 Lever, Parking Brake 4129466 Mount, Brake 1003616 Brake Arm 352726 • Bushing 471227 Grease Fitting, 1/4-28 45°...

  • Page 50: Frame And Front Axle

    LF 3400 / LF 3800 Serial No. All 7.1 Frame and Front Axle (Brake Cable) 25/26 11/12...
  • Page 51 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 1 5002573 Tire 5002574 360111 Valve, Inflation 1001757 Wheel Motor See 40.1 557623 • Key 557624 • Nut, Hex 4130197 Frame Includes Four (4) of Item 10 366871 •...

  • Page 52: Rops

    LF 3400 / LF 3800 Serial No. All 8.1 ROPS 5002952 WARNING This structure's proctective capability may be impaired by structural damage, overturn, or alteration. If any of these conditions occur, the structure must be replaced. 557844...
  • Page 53 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 67844 ROPS 5002952 • Decal, Seat Belt Warning 557844 • Decal, Warning 4139437 • Seat Belt Kit • • Screw, 7/16-20 Hex Head • • Flat Washer 5000465 •...

  • Page 54: 2Wd Steering

    LF 3400 / LF 3800 Serial No. 67945 - All 9.1 2WD Steering Serial No. 67947 - All 2WD Units Only...
  • Page 55 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 3006981 Tire 1003638 360111 Inflation Valve 361648 Washer, Thrust 361647 Bearing, Thrust 471214 Fitting, Grease 461393 Pin, Spring 1/4 x 2” 117139 Steering Axle 3010489 • Bushing 4137137 Cylinder, Steering 4137139 •...

  • Page 56: 4Wd Steering

    LF 3400 / LF 3800 Serial No. 67946 - All 10.1 4WD Steering Serial No. 67948 - All Serial No. 67949 - All 4WD Units Only Serial No. 67950 - All LF34-8...
  • Page 57 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 3006981 Tire 1003638 360111 Inflation Valve 361648 Washer, Thrust 361647 Bearing, Thrust 471214 Fitting, Grease 461393 Pin, Spring 1/4 x 2” 117139 Steering Axle 3010489 • Bushing 4137137 Cylinder, Steering 4137139 •...

  • Page 58: Tilt Steering

    LF 3400 / LF 3800 Serial No. 67958 - 1651 ~ 1766 Serial No. 67971 - 1651 ~ 1835 11.1 Tilt Steering Serial No. 67959 - 1651 ~ 1840 Serial No. 67972 - 1651 ~ 1863 Serial No. 67960 - 1651 ~ 1654 Serial No.
  • Page 59 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 5002918 Actuator, Gas Spring 5002919 Cable, Actuator 2811346 Tower, Steering 4146775 Pump, Steering See 45.1 339979 • Adapter, Straight 339974 • Adapter, Straight 443828 • Nut, 5/8-18 Hex Jam 3010651 Cover, Steering Tower 3005934...

  • Page 60: Tilt Steering

    LF 3400 / LF 3800 Serial No. 67958 - 1767 and Up Serial No. 67971 - 1836 and Up 11.2 Tilt Steering Serial No. 67959 - 1841 and Up Serial No. 67972 - 1864 and Up Serial No. 67960 - 1655 and Up Serial No.
  • Page 61 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 5002918 Actuator, Gas Spring 5002919 Cable, Actuator 2811346 Tower, Steering 4212980 Shaft, Steering 4201840 • Seal, Steering Shaft 443828 • Nut, 5/8-18 Hex Jam 3010651 Cover, Steering Tower 3005934 Bolt, Shoulder 4211401...

  • Page 62: Radiator And Air Cleaner

    LF 3400 / LF 3800 Serial No. All 12.1 Radiator and Air Cleaner 7 ref 11 ref Non-Turbo Units Turbo Units LF34-10...
  • Page 63 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 3001965 Air Filter 5000919 • Air Cleaner Element 5000920 • Cover 5000921 • Valve 3001388 Bracket, Air Filter 4119873 Shroud, Rear Frame 4121722 Bracket, Air Cleaner Mounting 4131951 Shroud, Radiator Fan Includes Decal 4131663 557367...

  • Page 64: Engine Assembly And Mounting

    LF 3400/ LF 3800 Serial No. All 13.1 Engine Assembly and Mounting Turbo Engine Ref. Negative Battery Cable...
  • Page 65 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 4162400 Engine, Kubota V1505-E3B LF 3400, LF 3800 4162421 Engine, Kubota V1505-T-E3B LF 3400 Turbo, LF 3800 Turbo 366879 Isolator, Engine 1003239 Front Engine Mount 1003260 Left Side Engine Mount 1003261 Right Side Engine Mount 4174241...

  • Page 66: Engine Exhaust

    LF 3400 / LF 3800 Serial No. All 14.1 Engine Exhaust Item Part No. Qty. Description Serial Numbers/Notes 1004653 Muffler LF 3400 & 3800 Only 1002931 Muffler LF 3400 Turbo, LF 3800 Turbo 1004598 Tailpipe 363586 Screw, M8-1.25 x 20mm Hex Head 452006 Flat Washer, 5/16 363485...

  • Page 67: Pump Mounting

    LF 3400 / LF 3800 Serial No. All 15.1 Pump Mounting Item Part No. Qty. Description Serial Numbers/Notes 2810006 Pump, Traction 5003034 • Seal Kit 5003432 • Control Kit 5003433 • Shaft Seal Kit 5003434 • System Relief Kit 2810440 •...

  • Page 68: Fuel And Hydraulic Tanks

    LF 3400 / LF 3800 Serial No. All 16.1 Fuel and Hydraulic Tanks Connect to engine fuel injector overflow. Connect to engine fuel pump...
  • Page 69 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 132647 Valve, Shut Off 3001279 Switch, Float REFERENCE SW-9, See 46.1 3002397 Plug, Magnetic 339899 • O-Ring 3009204 Fuel Tank 3005871 Hydraulic Tank 3005872 Shell, Tank Cover 3006243 Plate, Tank Mounting 3009347 Strainer, Fuel Filler...

  • Page 70: 2Wd Traction Hydraulics

    LF 3400 / LF 3800 Serial No. 67945-1601 and Up 17.1 2WD Traction Hydraulics Serial No. 67947-1601 and Up Serial No. 67951-1601 and Up Item Part No. Qty. Description Serial Numbers/Notes 1003462 Hose, Pump to Upper Traction Tee 339994 Adaptor, Straight 339999 Adaptor, Straight 1003463...

  • Page 71: 4Wd Traction Hydraulics

    LF 3400 / LF 3800 Serial No. 67946-1601 and Up 18.1 4WD Traction Hydraulics Serial No. 67948-1601 and Up Serial No. 67949-1601 and Up Serial No. 67950-1601 and Up Item Part No. Qty. Description Serial Numbers/Notes 1003440 Hose, Pump To Reverse 4WD Tee 339994 Adapter, Straight 339999...

  • Page 72: Charge Pressure And Steering Hydraulics

    LF 3400 / LF 3800 Serial No. All 19.1 Charge Pressure and Steering Hydraulics To Lift Valve P Port Charge To Lift Valve From Gear (Inner) T Port Pump Rear Reel Filter Valve To Steering Cylinder Lift Valve Front Item Part No.

  • Page 73: Gear Pump Hydraulics

    LF 3400 / LF 3800 Serial No. All 20.1 Gear Pump Hydraulics Item Part No. Qty. Description Serial Numbers/Notes 365959 Strainer, Tank Mounted 362743 • O-Ring 340090 Adapter, 90° 1003992 Tube, Gear Pump Inlet 445796 Nut, 3/8-16 Spiralock Flange 3001296 Fitting, Beaded Insert 4148857 Hose, Gear Pump Inlet...

  • Page 74: Return Hydraulics

    LF 3400 / LF 3800 Serial No. All 21.1 Return Hydraulics...
  • Page 75 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 4129656 Hose, Oil Cooler 2812271 Tube, Drain 1004312 Tube, Right Front Motor Drain 339999 Adapter, Straight 4123166 Check Valve, Tee Assembly 4129642 Hose, Oil Cooler 4121642 Tube, Return 340007 Adapter, Straight 1004311...

  • Page 76: Hydraulic Valve & Filter Mounting

    LF 3400 / LF 3800 22.1 Hydraulic Valve & Filter Mounting Item Part No. Qty. Description Serial Numbers/Notes 123015 Charge Filter 556417 • Head 2811255 • Oil Filter Cartridge 556419 • Charge Pressure Switch REFERENCE SW-1, See 46.1 132704 Return Filter 557772 •...

  • Page 77: Front Lift Hydraulics

    23.1 Front Lift Hydraulics Serial No. All Lift Valve 5 Gang Units Right Front Cylinder Center Front Left Cylinder Front Cylinder Item Part No. Qty. Description Serial Numbers/Notes 1003344 Hose, Lift Valve to Right Front Lift Valve Port 10 1003343 Hose, Right Front to Lift Valve Lift Valve Port 1 1003345...

  • Page 78: Rear Lift Hydraulics

    LF 3400 / LF 3800 Serial No. All 24.1 Rear Lift Hydraulics Item Part No. Qty. Description Serial Numbers/Notes 1003352 Hose, Left Rear to Right Rear Base Ports 1003351 Hose, Left Rear to Right Rear Rod Ports 1003350 Hose, Lift Valve to Inside Tee Lift Valve Port 6 1003349 Hose, Lift Valve to Outside Tee...

  • Page 79: Front Reel Hydraulics

    LF 3400 / LF 3800 Serial No. All 25.1 Front Reel Hydraulics Item Part No. Qty. Description Serial Numbers/Notes 1003337 Hose, Valve to Right Front Motor Front Reel Valve Port A 1003444 Hose, Right Front to Bulkhead 1003445 Hose, Bulkhead to Center Motor 1003446 Hose, Center Motor to Bulkhead 1003447...

  • Page 80: Rear Reel Hydraulics

    LF 3400 / LF 3800 Serial No. All 26.1 Rear Reel Hydraulics > Change from previous revision...
  • Page 81 Item Part No. Qty. Description Serial Numbers/Notes 1003338 Hose, Valve to Right Rear Motor 1003443 Hose, Right Rear to Left Rear Motor 1003335 Hose, Left Rear Motor to Valve 1003449 Hose, Left Rear Drain 1003448 Hose, Right Rear Drain 339989 Adapter, Straight 340070 Adapter, 90°...

  • Page 82: Hydraulic Clamps

    LF 3400 / LF 3800 Serial No. All 27.1 Hydraulic Clamps Steering Reel Hoses Motor Hoses Reel Motor Hoses Fuel Hoses Front Reel Drain Steering Hoses Tubes Lift Cylinder Hoses Steering Hoses Lift Cylinder Hoses Reel Motor Hoses Fuel Lines Traction Hoses Traction Hoses...
  • Page 83 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 445795 Nut, 5/16-18 Spiralock Flange 441614 Carriage Bolt, 5/16-18 x1” 3007558 Clamp, Double Tube 345666 Clamp, 1/2” I.D. 409811 Screw, 5/16-18 x 5/8” Thread Cutting 445794 Locknut, 1/4-20 Spiralock Flange 3003473 Clamp, Double Tube 400122...

  • Page 84: Lift Arms

    LF 3400 / LF 3800 Serial No. All 28.1 Lift Arms 17 19 23 24 Outside Yokes Only.
  • Page 85 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 4170623 Left Front Lift Arm 4170624 Right Front Lift Arm 4170626 Left Rear Lift Arm 4170627 Right Rear Lift Arm 4170625 Center Lift Arm 3006539 • Bushing 2 Per Lift Arm 1002498 Yoke, Pivot 3008432...

  • Page 86: Wire Harness And Controller Box

    LF 3400 / LF 3800 Serial No. All 29.1 Wire Harness and Controller Box Motor Part of A - Headlight B - Lift Arm Limit Switch C - Fuel Level Sender/ Instrument Panel D - Seat Switch E - Oil Float Switch F - Glow Plugs G - Fuel Solenoid H - Charge Filter Switch...
  • Page 87 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 1 ------------ Tray, Battery See 7.1 4122840 Headlight 4123183 • Bulb REFERENCE L-1 and L-2, See 46.1 4122841 Controller REFERENCE U-6, See 46.1 5003282 • Fuse, 20 Amp REFERENCE F-1 &...

  • Page 88: Five Inch Reel Assembly

    LF 3400/ LF 3800 Serial No. All 30.1 Five Inch Reel Assembly LF 3400, LF 3400 Turbo 4181863 4182520...
  • Page 89 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 5003087 Frame, Reel 4182520 • Decal, Danger 4181863 • Decal, Warning 5003053 7 Blade Left Hand Reel 5003054 7 Blade Right Hand Reel 1004786 Bearing Housing 500534 • Bearing, Cup and Cone 336962 •...

  • Page 90: Five Inch Reel Assembly

    LF 3400 / LF 3800 Serial No. All 31.1 Five Inch Reel Assembly LF 3400, LF 3400 Turbo 21/22 26/27...
  • Page 91 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 1000770 Rear Roller See 36.1 1002224 Zerk Bolt 446142 Lockwasher, 3/8 Heavy 400264 Screw, 3/8-16 x 1-1/4” Hex Head 453011 Flat Washer, 3/8 345510 Spacer 2000065 Casting, Counterweight 446130 Lockwasher, 1/4 Heavy 400110...

  • Page 92: Seven Inch Reel Assembly

    LF 3400 / LF 3800 Serial No. All 32.1 Seven Inch Reel Assembly LF 3800 and LF 3407 4182520...
  • Page 93 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 2810472 Reel, 11 Blade Used on 67848 2810471 Reel, 9 Blade Used on 67858 5002609 Frame, 7” Reel 4182520 • Decal, Danger 2811399 Bedknife Backing Assembly 503460 • Bedknife Standard 3009138 •...

  • Page 94: Seven Inch Reel Assembly

    LF 3400 / LF 3800 Serial No. All 33.1 Seven Inch Reel Assembly LF 3800 and LF 3407...
  • Page 95 LF 4675 / LF 4677 Item Part No. Qty. Description Serial Numbers/Notes 123268 Front Roller See 35.1 1002446 Rear Roller, 24” Serial No. 67848-1601 ~ 1899,See 37.1 1003728 Rear Roller, 22” Serial No. 67848-1900 and Up,See 37.1 1003728 Rear Roller, 22” Serial No.

  • Page 96: Down Pressure Spring

    LF 3400 / LF 3800 Serial No. All 34.1 Down Pressure Spring Item Part No. Qty. Description Serial Numbers/Notes 461397 Roll Pin, 1/4 x 1-1/4” 453017 Flat Washer, 1/2 400268 Screw, 3/8-16 x 1-3/4” Hex Head 3008593 Tube, Down Pressure 460312 Hairpin 443110...

  • Page 97: Front Roller

    LF 3400 / LF 3800 Serial No. All 35.1 Front Roller Part Number 123268 Item Part No. Qty. Description Serial Numbers/Notes 3003416 Shaft 3000115 Tube ◆ 500534 Bearing, Cup and Cone 471214 Grease Fitting ◆ 338647 Grease Seal ◆ Spacer ◆...

  • Page 98: Rear Roller

    LF 3400 / LF 3800 Serial No. All 36.1 Rear Roller Part Number 1000770 Item Part No. Qty. Description Serial Numbers/Notes 3001654 Shaft, Roller 3001655 Tube, Roller 3001656 Seal, Grease 5000625 Bearing, Cup and Cone 3000983 Seal, Grease 3001762 Sleeve, Wear 445718 Nut, 5/8-18 Hex Jam Lock 3000698...

  • Page 99: Rear Roller

    LF 3400 / LF 3800 Serial No. All 37.1 Rear Roller Part Number 1002446 Part Number 1003728 Item Part No. Qty. Description Serial Numbers/Notes 1002445 Tube, 24” Roller 1003727 Tube, 22” Roller 3005318 Shaft, 24” Roller 3008027 Shaft, 22” Roller 3005156 Sleeve, Wear 3004882...

  • Page 100: Brake Assemblies

    LF 3400 / LF 3800 Serial No. All 38.1 Brake Assemblies Item Part No. Qty. Description Serial Numbers/Notes 340603 Bracket, Brake Mounting 116881 Disk Brake, R.H. 116882 Disk Brake, L.H. 590259 • Nut, 3/8-24 549441 • V-Plate 502517 • Cam Lever 503296 •...

  • Page 101: Reel Valve

    LF 3400 / LF 3800 Serial No. All 39.1 Reel Valve Part Number 4135578 Item Part No. Qty. Description Serial Numbers/Notes 5003080 Flow Control 5003579 • Flow Control Seal Kit 4136815 Solenoid Valve 339909 • O-Ring REFERENCE K-3 and K-4, See 46.1 4135552 Coil REFERENCE K-7 and K-8, See 46.1...

  • Page 102: Front Wheel Motor

    LF 3400 / LF 3800 Serial No. All 40.1 Front Wheel Motor Part Number 1001757 ◆ Included In Seal Kit 557651 ❍ Included In Seal Kit 5002111 Item Part No. Qty. Description Serial Numbers/Notes 558066 Screw, Torx 5002110 Front Retainer 558063 Shaft and Bearing Kit 557624...

  • Page 103: Rear Wheel Motor

    LF 3400 / LF 3800 Serial No. All 41.1 Rear Wheel Motor Part Number 390859 Item Part No. Qty. Description Serial Numbers/Notes Seal Exclusion Seal, 3” I.D. Back Up Ring Shaft Seal 554781 Shaft and Bearing Kit 554780 554779 Hex Nut Shaft Face Seal Inner Face Seal Outer Face Seal...

  • Page 104: Lift Valve

    LF 3400 / LF 3800 Serial No. All 42.1 Lift Valve Part Number 4135566 2 / 7 Rear Front Item Part No. Qty. Description Serial Numbers/Notes 5003144 Relief Valve 5003579 • Relief Valve Seal Kit 5001355 Pilot Operated Check Valve 5003578 •...

  • Page 105: 4Wd Valve

    LF 3400 / LF 3800 Serial No. 43.1 4WD Valve Part Number 4135554 5 / 10 Rear, Right and Bottom View Front, Left and Top View Item Part No. Qty. Description Serial Numbers/Notes 4134530 Coil REFERENCE K-1 and K-2, See 46.1 5003096 Solenoid Valve 5003578...

  • Page 106: Reel Motor

    LF 3400 / LF 3800 Serial No. All 43.1 Reel Motor Part Number 2822503 (Five Inch Reel) Item Part No. Qty. Description Serial Numbers/Notes 845269 O-Ring 5003140 Relief Valve 5003688 Face Plate 5003589 Seal Kit > Change from previous revision...

  • Page 107: Reel Motor

    LF 3400 / LF 3800 Serial No. All 44.1 Reel Motor Part Number 1002620 (Seven Inch Reel) Used on LF 3800 Models. Item Part No. Qty. Description Serial Numbers/Notes 3006021 O-Ring 5003140 Relief Valve 5003485 Face Plate 5003031 Seal Kit Not Shown 4102440 Shaft, Output...

  • Page 108: Steering Valve

    LF 3400 / LF 3800 Serial No. 67958 - 1651 ~ 1766 Serial No. 67971 - 1651 ~ 1835 45.1 Steering Valve Serial No. 67959 - 1651 ~ 1840 Serial No. 67972 - 1651 ~ 1863 Serial No. 67960 - 1651 ~ 1654 Part Number 4146775 Serial No.
  • Page 109 LF 3400 / LF 3800 Item Part No. Qty. Description Serial Numbers/Notes 443108 Locknut, 5/16-18 Center Port Cover Seal, O-Ring Seal, O-RIng Seal, O-RIng 443828 Nut, 5/8-18 Hex Jam Special Bolt Port Manifold Spring, Port Side Hex Drive A and E Needle Roller 503398 Valve Ring...

  • Page 110: Electrical Schematic

    LF 3400 / 3800 Serial No. All 46.1 Electrical Schematic A B C D E F G H J K L M N Og/Wh Og/Wh LB/Tn Og/Wh Og/Wh SW-13 LB/Tn LB/Tn SW-3 Og/Wh SW-6 Lb/Bk K-10 Og/Bu Lb/Bk K-11 Bn/Ye Og/Bu Pu/Wh RD B...
  • Page 111 LF 3400 / 3800 Pk/Bk Og/Wh Og/Bk Og/Wh Gauges Switches Grd-1 Battery A B C D E F G H J K L M N...
  • Page 112 LF 3400 / 3800 Reference Part Item Description Serial Numbers/Notes Illustration Number See 29.1 366931 Battery CB-1 See 29.1 361439 50 Amp Circuit Breaker (Alternator) See 29.1 5003282 20 Amp Fuse (Ignition Circuit) Included in Controller See 29.1 5003282 20 Amp Fuse (Lights) Included in Controller See 43.1 4134530...
  • Page 113 LF 3400 / 3800 Reference Part Item Description Serial Numbers/Notes Illustration Number SW-15 Not Shown Cruise Control Switch (Option) SW-16 See 28.1 4125831 Left Reel Level Proximity Switch See 4.1 3005121 Temperature Gauge See 4.1 365943 Fuel Gauge See 4.1 4129683 Hour Meter See 4.1...

  • Page 114: Hydraulic Schematic

    LF 3400 / LF 3800 Serial No. All 47.1 Hydraulic Schematic 5 Gang Units (LF 3400, LF 3800 and LF 3400 Turbo) Reverse Diag. Valve 3625 psi 2.81 ci Gear 3000 .5 ci .5 ci .5 ci Pump 3625 psi Traction Pump Drain...
  • Page 115 LF 4675 / LF 4677 Front 4WD Valve Wheel Rear 19.0 ci Motors 19.0 ci Wheel Motors 8.0 ci 8.0 ci 450 psi 10 Micron 25 psi 25 psi Charge Filter .040 Right .026 Right One Way Front .040 Rear Left Cylinder Cylinder...

  • Page 116: O-Ring Chart

    LF 3400/ LF 3800 Serial No. All 48.1 O-Ring Chart O-Ring Face O-Ring Boss O-Ring Face O-Ring Face O-Ring Boss O-Ring Boss Seal Size Dash Size Seal Size Seal Size Dash Size Dash Size W-X-Y W-X-Y W-X-Y O-Ring Face O-Ring Not O-Ring Face O-Ring Boss O-Ring Face...
  • Page 117 LF 3400 / LF 3800 Adapter Part Dash Adapter Type (W) O-Ring (X) O-Ring (Y) O-Ring (Z) O-Ring Number. Size 339974 Straight Adapter 339908 339897 339979 Straight Adapter 339909 339897 339985 8-10 Straight Adapter 339910 339899 339989 10-10 Straight Adapter 339911 339899 339990...

  • Page 118: Fluids And Compounds

    See your local Jacobsen Dealer * Refer to the Parts & Maintenance manual for the correct hydraulic oil requirements for your machine. Jacobsen offers a High Usage Parts Catalog illustrating commonly used Parts through easy to read line Drawings. See your local Jacobsen...
  • Page 119 INDEX 1000480...... 89 1003447 ...... 79 2810424 ...... 65 3005316 ......95 1000770...... 91 1003448 ...... 81 2810440 ...... 67 3005318 ......99 1001757...... 51 1003449 ...... 81 2810471 ...... 93 3005673 ......59 1002031....55 1003451 ...... 79 2810472 ...... 93 3005692 ....91 1002032....
  • Page 120 INDEX 3008432.......85 339994.... 70 365398 ......63 4124647 ...... 75 3008438.......91 339996......72 365466 ....72 4124693 ...... 35 3008439.......91 339998......72 365501 ......93 4124694 ...... 35 3008521.......35 339999.... 70 365566 ......83 4124695 ...... 35 3008522.......35 340007......75 365943 ......45 4124696 ......
  • Page 121 INDEX 4139450....39 5002110 ....102 503398 ...... 109 831053 ... 39 4140094...... 51 5002151 ...... 89 503460 ....89 845269 ......106 4142455...... 49 5002157 .... 101 545692 ......55 4143527....104 5002477 ...... 93 549441 ...... 100 4146775...... 59 5002541 ....
  • Page 122 Equipment from Jacobsen is built to exacting standards ensured by ISO 9001 and ISO 14001 registration at all of our manufacturing locations. A worldwide dealer network and factory trained technicians backed by Genuine Jacobsen Parts provide reliable, high-quality product support.

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