Part of the John Deere Repair Manuals.
Need the factory specs for your JD300-B? This 596-page John Deere JD300-B Technical Manual PDF (OEM #TM-1087) breaks down every system on your loader and backhoe loader. You get complete hydraulic schematics for the main pump and control valves, full wiring diagrams, and step-by-step teardown procedures for the engine and power train. Open up the hydraulic section to find exploded views of the reverser, final drives, and differential, plus heavy-duty troubleshooting charts for every major circuit. Lock down the ring gear and pinion shaft nut to 160 lb-ft and verify your transmission pump end play sits exactly between 0.001 and 0.005 inches. Stop throwing parts at a weak hydraulic circuit. Download this bookmarked, text-searchable file to your tablet and drag it right under the machine to get the job done right.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 4 | Fos Manuals, Technical Manuals, General Specifications and Services, Component Removal, Repair, Testing, Installation, And Adjustment |
| Maintenance Without Accident | 5-8 | Work Safely, Maintenance Area, Fire Hazards, Maintenance Conditions, Servicing Precautions, Precautions During Repair |
| General | 9-46 | General Machine Specifications, Predelivery, Delivery, And After-Sale Services, Lubricants |
| Engine | 47-128 | Engine Removal and Installation, Basic Engine, Engine Lubrication System, Engine Cooling System, Fuel System, Speed Control Linkage, Air Intake System |
| Electrical System | 129-182 | Batteries, Charging System, Starting System, Ignition System, Gauges and Switches, Specifications and Special Tools |
| Power Train | 183-236 | Clutch Assemblies, Transmission, Reverser, Continuous Running PTO, Differential and Parking Brake, Final Drives, Specifications and Special Tools |
| Hydraulic System | 237-400 | Transmission Pump, Main Hydraulic Pump, Reverser Clutch Control Valve, Pressure Control Valve, Steering Valve, Brake Valve, Loader Control Valve, 9250 Backhoe Control Valve |
| Miscellaneous Components | 401-438 | Front End Assembly, Loader Frame, Boom, And Bucket, 9250 Backhoe Frame, Dipperstick |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Tighten cap screws | 75 lb-ft (101 N·m) | p. 55 |
| Retighten cap screws | 95 lb-ft (129 N·m) | p. 55 |
| Ring gear and pinion shaft nut | 160 lb-ft (22.121 kg-m) | p. 233 |
| End play | 0.001 to 0.005 in. (0.03 to 0.13 mm) | p. 243 |
| Cooler bypass and relief valve spring free length | 2.80 in. [71.0 mm] | p. 285 |
| Cooler bypass and relief valve spring test length | 2.05 in. [52.0 mm] at 20 ± 2 pounds [9.0 ± 0.9 kg] force | p. 285 |
| Pump shaft end play | 0.001 to 0.005 in. (0.03 to 0.13 mm) | p. 243 |
| Pressure control valve spring free length | 4-5/8 in. [117.8 mm] | p. 288 |
| Pressure control valve spring compressed length | 3-1/2 in. [88.9 mm] with 45 to 55 lbs. [20.4 to 24.9 kg] | p. 288 |
| Oil Filter Relief Valve spring free length | 2.56 in. [65.0 mm] | p. 343 |
| Oil Filter Relief Valve spring compressed length | 1.31 in. [33.3 mm] | p. 343 |
