JCB 331 HST and 335 HST Tractor Service Manual (9803/9440)

JCB 331 HST & 335 HST Tractor Service Manual (9803/9440-1)

This professional-grade workshop manual provides complete technical guidance for JCB 331 HST and 335 HST tractors. It covers all major systems including hydrostatic transmission, electrics, engine, hydraulics, brakes, and steering. Engineered for workshop-level repairs and advanced diagnostics, this PDF manual ensures precise servicing and long-term reliability.

Model Covers:

This manual provides information for the following model(s) in the JCB machine range:

- JCB Tractor 331 HST from serial number 1170000.

- JCB Tractor 335 HST from serial number 1170000.

Note: The machines covered may exist in various configurations. Where applicable, configuration-specific servicing details are included.

File Format: PDF

Size: 19.50 MB

No. of pages: 348

Language: English

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

📑 Included Sections:

General Information

• Machine identification and serial number ranges
• Torque specifications for axles and transmission housing
• Sealing compounds and service consumables list
• Detailed tool index for steering and front-end service

Care and Safety

• Operator safety notices and inspection protocols
• Pre-operation safety checklist and compliance warnings

Maintenance

• Service schedules, lubricants, capacities and daily checks
• Cleaning, greasing, and access panel maintenance
• Component-specific care: engine, fuel, hydraulic, brakes, electrical

Attachments

• Quick release couplings - service and replacement guide

Electrical Systems

• Wiring schematics and component layout (JCB T331/T335)
• Lighting, instrumentation, cold start, starting and charging systems
• Detailed fault-finding charts and switchgear diagnosis

Hydraulic Systems

• Hydrostatic drive schematics and hydraulic operation symbols
• Contamination control, hose bleeding, venting and connection
• System disassembly, inspection and test procedures

Transmission

• Wheel and PTO drive systems, front/rear axle technical data
• Fault tracing and repair methods for hydrostatic transmission
• Step-by-step axle disassembly and rebuild guides

Brakes

• Brake system technical specs and operational logic
• Diagnosis of common issues and full service breakdowns

Steering

• Gear pump, power valve, oil tank and OSPM steering data
• Diagnostics and disassembly of power steering components

Engine

• JCB331HST and JCB335HST engine specifications
• Cooling system, radiator, and air cleaning components
• Engine fault diagnosis and service intervals

This JCB 331HST and 335HST Tractor Service Manual is an essential PDF resource for engineers, technicians, and heavy equipment specialists working on hydrostatic drive tractors in agricultural or industrial settings.