Part of the JCB Repair Manuals.
Tearing down the four-speed transmission or rebuilding the loader valve block requires the exact 346-page JCB 435 wheeled loader service manual PDF (OEM #9803/4300) to get the job done right. Inside, you get full hydraulic schematics detailing the servo hand control and steering priority valve, plus complete electrical wiring diagrams for the alternator and cab controls. Jump into the engine and powertrain sections for step-by-step clutch dismantling procedures, detailed exploded views of the differential, and a massive set of factory torque tables. Verify the main hydraulic pump hits a 210 bar pressure rating before you charge the brake accumulator to exactly 65 bar. Stop guessing at diagnostic codes while the machine sits idle. Grab this bookmarked download, open it on your shop tablet, and fix the actual problem.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 5-20 | Introduction, Service Schedules, Greasing |
| Hydraulics | 21-92 | Hydraulic Fluid Level, Hydraulic Pump, Servo Hand Control, Loader Valve Block, Loader Valve, Pressure Testing, Typical Ram |
| Attachments | 93-122 | Cab Removal and Replacement, Air Conditioning |
| Engine | 123-132 | Technical Data, Oil Filter, Fuel System, Cooling System, Air Filter, Fan Belt |
| Transmission | 133-206 | 4 Speed Transmission Dismantling, Typical Clutch Dismantling, Typical Clutch Assembly, 4 Speed Transmission Assembly, Direction and Ratio Selection, Automatic Powersoft Control |
| Axles | 207-242 | Axle Dismantling Wheel Hub, Axle Dismantling Differential, Axle Assembly Differential, Axle Assembly Wheel Hub |
| Brakes | 243-262 | Brake Valve Operation, Brake Valve |
| Hydraulic Steering | 263-294 | Priority Valve, Steering Operation, Steer Shock Valve, Hydraulic Steering Unit, Emergency Steering System |
| Electrics | 295-330 | Alternator |
| Service Tools | 331-340 | Hydraulics, Body and Framework, Engine, Transmission, Axles, Sealing and Retaining Compounds |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Wheel nut torque (Item A) | 405 Nm | p. 211 |
| Engine oil drain plug torque | 34 Nm (25 Ibf ft) | p. 124 |
| Accumulator Gas Pressure | 65 bar (942.5 lbf/in2) | p. 243 |
| Hydraulic fluid/strainer bolts torque (Item B) | 20 Nm (15 lbf ft) | p. 24 |
| Hydraulic pump pressure rating | 210 bar (3045 Ibf/in2) | p. 21 |
| Proximity switch air gap | 3 to 5 mm (0.12 to 0.2 in) | p. 329 |
| Time delay switch fuse rating | 5 Amps | p. 296 |
| Low pressure warning on (Pressure Switch Operating Pressure) | 105 bar (1522.5 lbf in2) | p. 243 |
| Main Relief Valve (M.R.V.) operating pressure | 207 bar (3000 lbf/in2) | p. 21 |
| Engine Oil Capacity | 14.5 litres | p. 9 |
| Hydraulic/Brake System Capacity | 177 litres | p. 9 |
| Main Relief Valve (M.R.V.) Pressure | 207 bar | p. 21 |
