Part of the John Deere Repair Manuals.
Need factory procedures for your JD350? This 520-page John Deere JD350 service manual covers both Crawler Tractors and Crawler Loaders, from basic engine teardown through the complete hydraulic system, direction reverser, steering clutches, track adjustment, and loader boom assembly. Inside you get wiring diagrams for the Motorola alternator, ignition system, and starters, hydraulic circuit diagrams for both the 15 GPM and 23 GPM pump configurations, exploded views across every major assembly, and a full troubleshooting section covering engine, clutch, and winch faults. Torque the 15 GPM pump assembly cap screws to 27-30 ft-lbs; set steering clutch composition facings to 0.175-0.181 inch before buttoning anything up. Your machine is down and every hour costs money. Bookmarked by section; search any spec by keyword and find it in seconds, not minutes.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Description and Specifications | 7-14 | Engines, Lubrication System, Electrical System, Transmission, Track System, Winches |
| Tractor Separation | 15-25 | Engine Removal and Installation, Direction Reverser Case or Clutch Housing Removal and Installation, Final Drive Removal and Installation |
| Periodic Lubrication | 26-40 | Loader Removal and Installation, Lubrication Timetable |
| Engine Tune-Up and Tractor Adjustment | 41-70 | Engine Tune-Up, Detailed Tune-Up Procedure, Tractor Adjustment |
| Basic Engine | 71-112 | Cylinder Head, Valves, And Related Parts, Cylinder Block, Cylinder Liners, Pistons and Connecting Rods, Crankshaft |
| Engine Lubrication System | 113-120 | Oil Pump and Oil Filter |
| Governor and Speed Control Linkage | 121-128 | Governor, Speed Control Linkage |
| Engine Cooling System | 129-138 | Water Pump and Thermostat |
| Fuel Systems | 139-174 | Fuel Transfer Pump and Fuel Filters, Carburetor (Marvel-Schebler), Fuel Injection Pumps |
| Electrical System | 175-228 | Fundamentals of Alternator Charging Circuits, Electrical Tests on the Tractor, Alternator (Motorola), Ignition System (Gasoline Tractors), Starters, Battery, Wiring Diagrams |
| Engine Clutch | 229-236 | Engine Clutch Assembly, Engine Clutch Controls and Clutch Housing |
| Transmission | 237-264 | Description and Operation, Shifter Mechanism, Output Shaft and Ring Gear and Hub Assembly, Transmission Input Shaft, Powershaft and Transmission Case |
| Hydraulic Direction Reverser | 265-296 | Description and Operation, Servicing the Hydraulic Direction Reverser |
| Final Drives, Steering Clutches, and Brakes | 297-314 | Description and Adjustment, Final Drives, Steering Clutches and Brakes |
| Power Steering System | 315-326 | Description and Operation, Power Steering Cylinders |
| Track System | 327-338 | Description and Adjustment, Tracks |
| Special Service Tools | 339-352 | Engine Service Tool Set, Engine Cylinder Sleeve Puller Set, Diesel Injection Nozzle Removal and Installation Kit, Gasoline Carburetor Tools, Alternator Service Tool Set |
| Power Take-Off, Winch Drive, and Belt Pulley | 353-356 | Description and Operation, Power Take-Off, Winch Drive, Removal, Servicing and Assembly, Installation |
| No. 3315 Power Winch | 357-360 | Description and Operation |
| No. 3310 Manual Winch | 361-416 | Winch Hydraulic Pump, Control Valve and Filter, Winch Housing and Component Parts, Winch Control Valve and Accumulator |
| Hydraulic System | 417-466 | Hydraulic Pump (15 GPM), Hydraulic Pump (23 GPM), Loader Control Valve, Hydraulic Cylinders, Hydraulic Circuit Diagrams, Testing the Loader Hydraulic System, Hydraulic Components |
| Loader Main Frame, Boom, Buckets, and Hitches | 467-482 | Digging Bucket, Drott 4-In-1 Bucket, Point Hitch and Cylinders |
| Trouble Shooting | 483-520 | Engine and Engine Clutch, Winch |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Hydraulic pump assembly cap screws torque (15 GPM PUMP) | 27 to 30 ft-lbs. | p. 429 |
| Hydraulic pump assembly cap screws torque (23 GPM PUMP) | 40 ft-lbs. | p. 429 |
| Drott Clam Circuit Relief setting | 2250 psi ( -600 ) or 2500 psi ( 601-up ) | p. 455 |
| Steering Clutch Composition Facings thickness (new parts) | 0.175 to 0.181 Inch | p. 313 |
| Steering Clutch Steel Plates thickness (new parts) | 0.090 to 0.096 Inch | p. 313 |
| Relationship between impeller fins and rim of pump housing | Flush within 0.010 inch | p. 137 |
| Maximum allowable piston ring side clearance in groove | 0.008 inch | p. 110 |
| Troubleshooting for Bucket lifts or closes too slowly | Insufficient engine speed, badly worn pump, oil leaking past control valve, oil leaking past cylinder packing, restriction in suction line, dirty relief valve, dirty wire mesh filter | p. 503 |
| Troubleshooting for Engine overheating with normal coolant levels | Dirty radiator core or grille screen, loose or defective alternator belt, cooling system limed up, defective temperature gauge, defective radiator pressure cap | p. 487 |
| Engine Flywheel Horsepower (observed) at 2500 rpm | 42.0 | p. 11 |
| Engine Crankcase Oil Capacity | 9 qts. | p. 12 |
