JCB 426, 427, 435, 436, 437, 446 Wheeled Loading Shovel Service Manual (9803/4170-17)

This professional-grade service manual provides advanced technical information for JCB 426, 427, 435, 436, 437, and 446 Wheeled Loading Shovels. Designed for workshop technicians, it covers detailed repair, diagnostics, and maintenance procedures including hydraulics, electrics, transmissions, and Tier 4 engine configurations.

Model Covers:

This manual includes comprehensive service details for the following JCB models:

JCB 426 from serial number 531001

JCB 427 from serial number 533001

JCB 435 from serial number 533001

JCB 436 from serial number 533001

JCB 437 from serial number 533001

JCB 446 from serial number 540000 to 540011

Note: The information for JCB 436 also applies to JCB 446 unless specified otherwise. For USA-only 426 models built after November 1998 and October 2000, hydraulic and electrical data align with 436 machines.

Note: For service information covering JCB 412S, 414S, and 416S Wheeled Loading Shovels, refer to Service Manual 9803/4170-16.

File Format: PDF

Size: 303.15 MB

No. of pages: 1366

Language: English

Delivery Method: Instant Download - Access your file immediately after purchase.

📑 Included Sections:

General Information

• Identification of machine models, serial numbers, and component plates
• Torque settings for zinc plated and Dacromet fasteners
• Service tooling indexes and hydraulic connector specifications
• Glossary of technical terms and color-coded schematics

Care and Safety

• Comprehensive safety protocols for operators and service personnel
• Maintenance safety procedures and emergency response guidelines

Routine Maintenance

• Scheduled service intervals, lubricants, and fluid capacities
• Detailed inspection checklists for tyres, brakes, and cooling systems
• Greasing schedules and anti-corrosion recommendations

Body and Framework

• Cab service, ROPS/FOPS inspection, and air conditioning maintenance
• Removal and installation of panels, glazing, and chassis components

Electrical Systems

• Full wiring diagrams and fault-finding procedures
• EMS, ECU diagnostics, alternator and starter motor service
• Battery testing and harness repair guidance

Hydraulic Systems

• Hydraulic schematics, valve operations, and pressure testing
• Loader valve diagnostics and Smooth Ride System adjustments
• Accumulators and pump servicing procedures

Transmission

• Powershift gearbox service, clutch assembly, and fault code references
• Front and rear axle maintenance including ZF axles and propshaft details

Engine

• Tier 2 and Tier 4 engine servicing procedures and technical data
• Oil and filter change schedules, cooling system maintenance, and fuel system details
• Drive belt adjustment and air filter servicing

Note: For further engine details, see Engine Service Manuals Publication No. 9806/0100, 9806/2130, 9806/2140, and 9806/3020.

This JCB 426, 427, 435, 436, 437, and 446 Service Manual is a vital resource for technicians involved in complex repairs and preventive maintenance of wheeled loading shovels in demanding operations.