Part of the John Deere Repair Manuals.
Tired of guessing at hydraulic pressures on your machine? All 550 pages of this John Deere JD401-C technical manual PDF (OEM #TM1092) focus on getting your loader and backhoe back to factory condition. Inside, you get high-quality hydraulic schematics mapping out the entire rockshaft system, plus complete wiring diagrams for the starting and ignition circuits. Open to the system testing section to find step-by-step diagnostic procedures for the reverser, continuous running PTO, and 9250 backhoe control valves. Torque the backhoe cylinder gland nuts to 210 lb-ft and verify the main hydraulic pump flow rates before buttoning up the transmission. Stop throwing expensive parts at a weak hydraulic system. Download this bookmarked file directly to your tablet, jump straight to the right procedure, and get back to work.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 4-10 | Fos Manuals, Technical Manuals, Maintenance Without Accident, General Information, System Operation, Diagnosis, Visual Inspection, Testing |
| General Information | 11-48 | Specifications, Pre-Delivery Services, Lubrication |
| Engine | 49-128 | 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 | 237-370 | 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 | 371-408 | Front End Assembly, Loader Frame, Boom and Bucket, 9250 Backhoe Frame, Boom, Dipperstick, And Bucket, 9250-A Backhoe Frame |
| System Testing & Diagnostics | 409-542 | General Information, Engine Tests, Electrical System Tests, Power Train Tests, Hydraulic System Tests, Hydraulic Analyzer, Miscellaneous Components, Specifications and Special Tools |
| Alphabetical Index | 543-550 | Index of Sections, Groups and Procedures |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Torque for pump rear cover attaching cap screws | 35 lb-ft [47 Nm] | p. 82 |
| Impeller fins flushness with metal rim of pump housing | within 0.010 inch [0.254 mm] | p. 81 |
| Radiator test pressure (diesel and gasoline) | 10 psi (1 bar) | p. 165 |
| Battery BCI Group Size | 24 | p. 161 |
| Spark plug torque | 35 lb-ft [47 Nm] | p. 163 |
| Spark plug gap | 0.025 inch [0.64 mm] | p. 179 |
