Part of the JCB Repair Manuals.
This is the JCB service manual for the 520 Loadall range, publication 9803/3350, covering the 520, 520HL, 520 Farm Special, 520M, 525, 525B, 525B HL, 525B Farm Special, 530, 530 HL, 530B, 530B HL, 540B, and 540BM telehandlers in both 2 and 4 wheel drive. The 400-page manual has a searchable text layer.
Written for service engineers, it is organised by system: hydraulics, engine, transmission, axles, brakes, hydraulic steering, electrics, and body and framework. Each section opens with technical data, then moves into dismantling, inspection tolerances, and reassembly.
It carries the numbers a workshop needs: lubricant grades and capacities, torque settings, service schedules, hydraulic relief pressures, injector working and setting pressures for the Leyland and Perkins engines, axle and brake data, and battery specific gravity. It is the deep repair reference behind the operator manual, built for engine, transmission, and hydraulic overhaul.
What's Inside This JCB 520–540 Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 3-18 | Introduction, Engine Lubrication Chart, Lubricants & Capacities, Torque Settings, Service Schedule, Greasing Loader Unit, Greasing Propshafts, Greasing Rear Axle |
| Hydraulics | 19-127 | Technical Data (Pump, Control Valves, Relief Valve Operating Pressures, Rams, Filtration) |
| Body & Framework | 128-140 | Boom Wear Pads (Removal and Replacement, Stage 1, Front Pads, When Removing, When Replacing, General, Jcb 525 Only, Jcb 530 Only), Boom Pivot (Shim Requirements) |
| Engine | 141-156 | Technical Data (Model, Type, Bore, Stroke, Swept Volume, Compression Ratio, Compression Pressure, Injection Sequence, Valve Clearance, Hot, -Cold, Oil Pressure at Max. Speed, Max. Air Cleaner Restriction, Fuel System, Injection Pump Type, Governing, Pump Setting Code, Maximum No Load Speed, Maximum Governed Speed, Idling Speed, Injection Timing, Injection Pressure, Cooling System, Coolant Pressure, Coolant Temperature, Temperature Warning Light Operates at) |
| Transmission | 157-242 | Technical Data (Torque Converter Diameter, Torque Multiplication at Stall, Minimum Engine Speed at Converter Stall, Converter Pressure, Shuttle Reverser Direction Control, Ratios, Shuttle Reverser Pressure, Flow Rates, Gearbox Type) |
| Axles | 243-298 | Technical Data (Drive Axle -Front, Steering Axle -Rear, Steer Axle -Rear), Tyre Pressures, Front Axle (Check Oil Level, Drain and Refill) |
| Brakes | 299-308 | Technical Data (Service Brake, Master Cylinder, Parking Brake), Parking Brake (Check Adjustment, Pad Renewal), Brake System (Bleeding Procedure) |
| Hydraulic Steering | 309-334 | Technical Data (System Type, Pump, Pump Except 530B, 540B and 540BM, Pump 530B, Controlled Flow, Relief Valve Operating Pressure, Control Unit, Column End Float, Ram Dimensions) |
| Electrics | 335-376 | Technical Data (System Type, Battery, Alternator, Starter Motor, Lights), Batteries (Testing - Specific Gravity, Specific Gravity at 15°C, High Rate Discharge Test) |
Documents This Manual Refers To
The manufacturer cites these publications by number. We carry them:
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Wheel nuts torque | 315 Nm (32 kgf m; 230 lbf ft) | p. 244 |
| Fuel filter element renewal interval | Every 500 Hours | p. 146 |
| Air filter outer element cleaning/renewal interval | Every 1000 Hours | p. 156 |
| Air filter inner element renewal interval | Every 2000 Hours | p. 156 |
| JCB 530B-2/4 & 530B HL-2/4 | ||
| Sundstrand pump inlet and outlet adapters torque | 45–50 Nm (4.6-5.1 kgf m; 33-37 lbf ft) | p. 37 |
| Leyland 4/98NT Engine | ||
| Injection Pressure (Leyland 4/98NT) | 175 atm | p. 141 |
| Perkins 4.236 LD Engine | ||
| Injection Working Pressure (Perkins 4.236 LD) | 170 atm | p. 142 |
| 4/98 Engine | ||
| Engine Oil Capacity, 4/98 Engine | 9.7 Litres | p. 7 |
| 4.236 Engine | ||
| Engine Oil Capacity, 4.236 Engine | 11 Litres | p. 7 |
| 520/520M/525B | ||
| Hydraulic System Capacity (Below 38 deg C) | 87-100 Litres | p. 7 |
| 525/530 | ||
| Fuel Tank Capacity | 100 Litres | p. 8 |
| 520-2/4, 520-2/4HL, 525B & 525BHL | ||
| Main Relief Valve Pressure (Hydraulics) | 221 bar | p. 19 |
