Part of the John Deere Repair Manuals.
Looking for the John Deere 750C, 850C repair manual PDF that dealer techs actually use? All 776 pages of TM1589 cover these crawler dozers from track frame to blade, including the 750C and 850C Series II machines. You get full wiring diagrams for the electrical system, hydraulic schematics for the hydrostatic transmission and dozer circuits, and step-by-step teardown procedures for tracks, final drives, axles, engine, park brake, and the operator's station. Exploded views walk you through every rebuild in the right order. Torque the engine mounts-to-main frame cap screws to 800 N-m (590 lb-ft), and switch the 850C to J20D low-viscosity HY-GARD when temperatures drop below -18°C. No more chasing a hydrostatic fault with forum guesses. Bookmarked with a full text layer; search any spec, jump to any section, and get that dozer pushing dirt again.
What's Inside This Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 9-72 | Safety, Torque Values, Fuels and Lubricants, General Specifications, Fuels, Lubricants |
| Tracks | 73-198 | Track System, Rock Guards, Track Guides, Carrier Roller, Track Roller, Front Idler, Dealer Fabricated Tools |
| Axles and Suspension Systems | 199-238 | Drive Axle Housing, Axle Shaft, Bearings, Reduction Gears, Planet Housing |
| Transmission | 239-360 | Hydrostatic Pumps, Hydrostatic Motors, Control Linkage, Hydrostatic System, Oil Cooler Bypass Valve |
| Engine | 361-402 | Oil Pan, Fuel Filter, Fuel Injection Pump, Fuel Shut-Off Solenoid |
| Engine Auxiliary Systems | 403-466 | Cold Weather Starting Aid, Cooling System, Speed Controls, Intake System, Exhaust Systems, Fuel Supply Systems |
| Dampener Drive | 467-470 | Elements, Drive Elements |
| Park Brake | 471-488 | Control Linkage, Hydraulic System |
| Equipment Attaching | 489-494 | Drawbar, Extended Rigid Drawbar, Rigid Drawbar |
| Electrical System | 495-566 | Batteries, Alternator, Lighting System, Wiring Harness, System Controls, Motors and Actuators |
| Frames, Chassis, or Supporting Structure | 567-574 | Frame Installation, Frame Bottom Guards, Chassis Weights |
| Operator's Station | 575-648 | Operator Enclosure, Seat, Seat Belt, Heating System, Air Conditioning |
| Sheet Metal | 649-660 | Hood, Engine Enclosures, Grille, Grille Housing |
| Safety, Convenience and Miscellaneous | 661-664 | Horn, Warning Devices |
| Bulldozer | 665-776 | Removal and Installation, Blade, Controls Linkage, Frames, Hydraulic System |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| John Deere HY-Gard Transmission and Hydraulic Oil | J20D (low viscosity) for temperatures below -18°C (0°F) | p. 65 |
| Transmission Speed Sensor Contact Point Voltage | 1.76—2.64 V | p. 261 |
| Transmission Speed Sensor Maximum Speed Voltage | 2.44—3.66 V | p. 261 |
| Engine Mounts-to-Main Frame Cap Screws Torque | 800 N•m (590 lb-ft) | p. 400 |
| Engine Front Mounts-to-Engine Cap Screws Torque | 278 N•m (205 lb-ft) | p. 400 |
| Fan Belt Strand Tension—750C (S.N.—831315) | 400 N (90 lb force) | p. 411 |
| Fan Belt—750C (S.N.—831315) Deflection | 19 mm at 111 N (3/4 in. at 25 lb force) | p. 411 |
| Approximate capacity of cooling system (750C) | 26.5 L (7 gal) | p. 416 |
| Approximate capacity of cooling system (850C) | 34 L (9 gal) | p. 416 |
| Battery Cable Cap Screws Torque | 9.2 N•m (82 lb-in.) | p. 497 |
| Battery Terminal Wire Lead Nut Torque | 3.73 ± 0.9 N•m (33 ± 8 lb-in.) | p. 507 |
| ROPS Mounting Bolts Torque | 410 ± 82 N•m | p. 47 |
