JCB 3CX eco, 4CX eco Backhoe Loader Service Manual (9813/0250-3)

JCB 3CX eco, 4CX eco Backhoe Loader Service Manual (9813/0250-3)

This factory service manual provides advanced service, troubleshooting, and repair procedures for JCB 3CX eco and 4CX eco backhoe loaders. Covering detailed systems including engine, hydraulics, transmission, steering, brakes, electrics, and the CANbus-based diagnostic system, this manual is essential for workshop professionals and field technicians ensuring optimal performance and long-term reliability.

Model Covers:

JCB 3CX eco, 4CX eco Backhoe Loader
Serial Numbers: From 2000000 Onwards

File Format: PDF

Size: 170.42 MB

No. of pages: 2019

Language: English

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

📑 Included Sections:

General Information

• Machine applications, PIN formats, and identification plate data
• Torque settings for bolts, screws, and hydraulic fittings
• Service tools and compounds, accepted fuels and biodiesel use

Care and Safety Procedures

• Safety labels, lock-out/tag-out steps, and HBPV overview
• Battery handling, pressure venting, hydraulic contamination control
• Machine cleaning, damage inspection, ROPS/FOPS checks

Routine Maintenance

• Lubrication charts for loader arms, backhoe, axles, and kingpost
• Fluid and filter changes: engine, transmission, hydraulics
• Greasing access points, tyres, wear pad inspection, heater system

Attachments and Loader System

• Hydraulic tool circuits (HTC), Hi-Flow S1/S2 hammer systems
• Operational schematics, auxiliary service flow control, diverter valves
• Backhoe quickhitch, clamshovel, power sideshift adjustments

Cab and Body Structure

• Cab HVAC system testing, component replacements
• ROPS/FOPS mounts, console systems, glazing, roof and seats
• Fuel and hydraulic tank service, engine cover and grille removal

Electrical System & Schematics

• Fuse/relay locations for all control variants (Manual, Easy, Advanced)
• Battery maintenance, alternator and starter testing, harness diagrams
• CANbus diagnostics, Servicemaster setup and use, blink code tables

Hydraulic System

• Parallel & closed-center circuit operation with full schematics
• Main relief valves, MRV pressure checks, ARVs, pilot valves
• Advanced EasyControl Plus, Smooth Ride System (SRS), hose burst safety

Transmission and Axles

• SS700 / PS764 / PS766 gearbox systems, stall tests, flushing
• Gear clutch packs, solenoid valves, ECU fault tracing
• Torque converter and drive path schematics, speed sensors

Brake System

• Internal and external park brake variants – tests and adjustments
• Brake accumulator pressure and charge testing
• Brake caliper inspection, pad replacement, warning circuits

Steering System

• 2WS/4WS hydraulic circuits, steer mode ECU, and proximity switch
• Auto steer valve replacement, gas dampers, track rod overhaul

Engine & Cooling System

• JCB Dieselmax component servicing, coolant system overhaul
• Starter motor rebuilds, throttle cable, fan viscous coupling
• Air ducting, heater matrix, inlet manifold heater diagnostics

Electronic Network and CANbus

• Servicemaster installation, setup, and reprogramming ECU tools
• Fault diagnostics via CANbus with blink codes and interface logic
• Electronic test procedures and network topology overview

This JCB 3CX eco / 4CX eco Backhoe Loader Service Manual is the definitive technical resource for full system diagnostics, advanced servicing, and field-level maintenance on JCB's eco-series loaders.