Part of the JCB Repair Manuals.
Looking for the factory tear-down steps for your excavator? This 558-page JCB JZ140 service manual PDF (OEM #9803/9910-3) covers the excavator with exact repair procedures. Open it up to find complete electrical schematics for the A.M.S. system, full hydraulic flow charts covering everything from the main control valve to the slew motor, and detailed diagnostic error code tables. You also get a massive maintenance section detailing routine fluid changes, track tension adjustments, and heavy component rebuilds. Secure the track guard mounting bolts to exactly 290 Nm, and lock down the plexus filter bolts at 20 Nm to prevent pressure leaks. Stop waiting on dealers for simple answers. Download this bookmarked file straight to your tablet, find your spec, and get your machine digging again.
Complete the set for your JZ140, JZ140HD, JZ235…
- Operator Manual: JCB JZ140, JZ235, JZ255 Tracked Excavator Operator Manual
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 1-47 | Introduction, Identifying Your Machine, Torque Settings, Hydraulic Connections, Service Tools, Tool Detail Reference, Service Consumables, Terms and Definitions |
| Care & Safety | 48-67 | Safety Notices (Important Information, Operator Manual, Safety Warnings), Safety Check List (Safety - Yours and Others, Operating Safety, Maintenance Safety) |
| Routine Maintenance | 68-167 | Service Requirements, Health and Safety, Service Schedules, Fluids, Lubricants and Capacities, Tools, Prepare the Machine for Maintenance, Cleaning the Machine |
| Body & Framework | 168-211 | Technical Data (Static Dimensions, Dig Depth Chart, Shipping Weight, Air Conditioning), Basic Operation (Automatic Temperature Control System), Fault Finding (Air Conditioning) |
| Electrics | 212-311 | Basic System Operation (Circuit Symbols, Component Identification, Schematic Diagram, A.M.S, Circuit Concepts, Pulse Width Modulation, ECU1/EMS/FACIA Power Supply and Network, ECU 1 Supply to Output Drivers, Engine Throttle Control, Pump Control for Each Mode, Hardware Sensing, Auto Boost Pressure, Engine Oil Level Warning, Engine Pre Heat, Engine Automatic Warm Up, Engine Automatic Idle, Engine One Touch Idle, Engine Start/Stop, Limp Mode System, Lever Lock, Servo Isolator, Wiper, Lower Wiper, Washer, Horn, Travel Alarm, Soft/Hard, Slew Brake, Slew Lock, Slew Brake Solenoid Valve Failure, 3-Speed Travel, Work Lamps, Hydraulic Fan, Fuel Level Sensor/Warning, Engine Temperature Sensor/Warning, Coolant Level Warning, Air Filter Blocked Warning, Hydraulic Temperature Sensor/Warning, Alternator/No Charge Warning, Quick Hitch, Overload Caution, Beacon, Hammer Only, Scrap Magnet Option, Cab Interior Lamp, Refuelling Pump, Air Conditioning, Heated Seat, Radio and Cigar Lighter, Service Required Warning, Ems Set Menu, Ems Set + Mode Menu, Ems Set+Mode Menu) |
| Hydraulics | 312-411 | Technical Data, Basic System Operation (Hydraulic Component Location, Introduction to Hydraulic Schematic Symbols) |
| Transmission | 412-470 | Technical Data (Travel Equipment), Fault Finding (Transmission), Traction Motor / Reduction Gear (Description, Operation, Removal and Replacement, Start Up and Running in) |
| Track & Running Gear | 471-505 | Idler Wheel and Recoil Unit (Removal, Replacement), Idler Wheel (Dismantling, Assembly), Recoil Unit (Dismantling and Assembly) |
| Engine | 506-558 | Technical Data |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| JZ140, JZ235, JZ255 | ||
| Track Guard Mounting Bolts Tightening Torque | 290 Nm (213 lbf ft) | p. 114 |
| All Models | ||
| Pilot Oil Filter Bowl Tightening Torque | 24.4 to 34.3 Nm (18.07 to 25.5 lbf ft) | p. 149 |
| Plexus Filter Bolts Tightening Torque | 20 Nm (14.75 lbf ft) | p. 147 |
| Fuel Pump Filter Element Replacement Interval | Change (see service schedules) | p. 79 |
| Primary Fuel Filter/Sedimenter Replacement Interval | Change (see service schedules) | p. 79 |
| BSP Adaptors 1/4 inch Torque Setting | 18.0 Nm (1.8 kgf m, 13.0 lbf ft) | p. 16 |
| BSP Adaptors 3/8 inch Torque Setting | 31.0 Nm (3.2 kgf m, 23.0 lbf ft) | p. 16 |
| JZ140 | ||
| Boom Ram Piston Nut Torque | 2430 Nm (1798 lbf ft) | p. 321 |
| TAB (Lift) Ram Piston Nut Torque | 2430 Nm (1792 lbf ft) | p. 321 |
| Engine Oil Capacity, JZ140 | 11.6 litres | p. 87 |
| Hydraulic System Capacity | 124 litres | p. 87 |
| JZ235, JZ255 | ||
| Engine Oil Capacity (JZ235, JZ255) | 21.5 litres | p. 88 |
