Part of the John Deere Repair Manuals.
Need the factory tear-down specs for your crawler? All 815 pages of this John Deere 750B technical manual PDF (OEM #TM1476) focus on one thing: getting your 750B or 850B Crawler Bulldozer back in the dirt. Inside, you get complete hydrostatic transmission breakdown procedures and a massive section of hydraulic schematics for the dozer control valves. Open to page after page of electrical wiring diagrams, track sag adjustment tables, and step-by-step troubleshooting charts to trace any fault. Lock down the hydrostatic drive by tightening the bypass valve cap screws to exactly 50 N·m (37 lb-ft) and securing the displacement control valve bolts to 15 N·m. Every hour in the shop costs money. Download this bookmarked, text-searchable file, jump straight to the right spec, and get back to work.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 9-66 | Safety Information, General Specifications, Torque Values, Fuels and Lubricants, Inspection Procedure |
| Tracks | 67-130 | Track System, Carrier Roller Wear, Track Roller Wear, Track Shoe Grouser Wear, Track Sag Adjustment |
| Axles and Suspension Systems | 131-166 | Drive Axle Housing and Support, Axle Shaft, Bearings and Reduction Gears, Planet Housing, Final Drive |
| Transmission | 167-266 | Hydrostatic Transmission, Control Linkage, Drive Shaft and U-Joints, Hydraulic System, Transmission Control Valve |
| Engine | 267-292 | Engine Removal and Installation, Oil Pan, Fuel System Bleed, Fan Belt Tightener |
| Engine Auxiliary Systems | 293-326 | Cold Weather Starting Aid, Cooling System, Speed Controls, Intake System, External Exhaust, Fuel Supply |
| Park Brake | 355-374 | Park Brake Removal and Installation, Control Linkage, Park Brake Pedal, Hydraulic System |
| Electrical System | 381-428 | Batteries, Alternator, Lighting System, Wiring Harness, Instruments and Indicators, Starting Motor |
| Operator's Station | 437-500 | Cab Removal, Operator Enclosure, Windowpane, Seat and Seat Belt, Heating and Air Conditioning |
| Bulldozer | 521-564 | Angledozer Blade, Tilt Cylinder, Controls Linkage, Frames, Hydraulic System, Dozer Control Valve |
| Dealer Fabricated Tools | 565-574 | Compressor Holding Fixture, Track Nut Removal Tool, Final Drive Lifting Tool, Hydrostatic Pump Repair Stand |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Hydraulic System (Hydrostatic Transmission) | Group 0360 | p. 3 |
| Axle Shaft, Bearings and Reduction Gears | Group 0250 | p. 3 |
| Bypass valve cap screws torque | 50 N·m (37 lb-ft) | p. 328 |
| Cap screws (B) torque | 15 N·m (130 lb-in.) | p. 330 |
| High Pressure Relief Valve O-Ring | (2 used) | p. 375 |
| High Pressure Relief Valve Backup Ring | (2 used) | p. 375 |
| Adjusting Spring (D) Test length | 24 ± 2 N (5.4 ± 0.5 ib force) | p. 392 |
| 850B Engine Displacement | 7.635 L | p. 33 |
