Part of the JCB Repair Manuals.
Looking for the factory teardown procedures for your JCB mini excavator? This 457-page JCB 8055 service manual pdf (OEM #9813/1850-1) covers the complete machine, alongside the 8040, 8045, 8050, and Tier 2/Tier 3 engine variants. You get detailed hydraulic schematics mapping out the main services and slew circuits, plus full wire-by-wire electrical diagrams for every mainframe harness. Open the track and running gear section to find step-by-step rebuild procedures for your track motors, gearboxes, and rotary couplings. Lock down the bottom roller to the undercarriage at exactly 244 Nm and make sure you swap the fuel sedimenter element right at the 500-hour mark. Stop tearing down complex valve blocks without a roadmap. Grab this bookmarked download, open it on your shop tablet, and get the iron moving again.
Other edition of this manual
What's Inside This JCB 8040 & variants Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 1-37 | Introduction, Identifying Your Machine, Standard Torque Settings, Service Tools, Service Consumables, Terms and Definitions |
| Care and Safety | 38-57 | Safety Notices (Important Information, Operator Manual, Safety Warnings), Safety Check List (Safety - Yours and Others, Operating Safety, Maintenance Safety) |
| Maintenance | 58-115 | Routine Maintenance (Service Requirements, Introduction, Owner/Operator Support, Service/Maintenance Agreements, Fit for Purpose Tests for Lifting Equipment, Obtaining Replacement Parts, Health and Safety, Lubricants, Battery, Service Schedules, How to Use the Service Schedules, Calendar Equivalents, Pre-Start Cold Checks, Service Points and Fluid Levels, Functional Test and Final Inspection, Fluids, Lubricants and Capacities, Coolant Mixtures, Fuels, Tools, Toolbox, Carrying Tools Onto the Machine, Prepare the Machine for Maintenance, How to Make the Machine Safe, Cleaning the Machine, Preparing the Machine for Cleaning, Cleaning the Tracks, Checking for Damage, Check the Machine Body and Structure, Check the Seat and Seat Belt, Check the Hydraulic Hoses and Fittings, Check the Electrical Circuits, Checking the ROPS/FOPS Structure, Checking the Ram Piston Rods, Greasing, Pivot Pins, Slew Ring Bearings, Slew Ring Gear Teeth, Access Panels, Engine Cover, Hydraulic Bay Cover, Electrical System, Fuses, Engine, Oil and Filter, Cooling System, Fan Belt, Air Filter) |
| Attachments | 116-137 | Introduction, Attachments for Your Machine, Impact Protection, Connecting/Disconnecting Hydraulic Hoses (Introduction, Quick Release Couplings) |
| Body and Framework | 138-165 | Service Procedures (Rivet Nuts, Fitting Procedure, Glazing, Direct Glazing), Kingpost (Removal and Replacement, Removal, Replacement) |
| Electrics | 166-239 | Technical Data |
| Controls | 240-269 | Controls Identification, Fault Finding, Servo Hand Controllers, Track Levers, Dozer Lever, Engine Throttle, Auxiliary Controls (If Fitted) |
| Hydraulics | 270-419 | Technical Data (All Machines), Basic System Operation (Introduction to Hydraulic Schematic Symbols, Control Valves, Example of Schematic Circuit) |
| Gearboxes | 420-425 | Notes, Technical Data |
| Track and Running Gear | 426-451 | Tracks and Running Gear (Technical Data, Major Component Torque Settings), Steel Track (Removal and Replacement), Rubber Track (Removal and Replacement) |
| Engine | 452-457 | Notes, General, Technical Data |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Bottom roller to undercarriage torque | 244 Nm, 24.9 kgf m, 180 lbf ft | p. 431 |
| Top roller to undercarriage torque | 350 Nm, 35.7 kgf m, 258 lbf ft | p. 431 |
| Fuel Filter/Sedimenter Element replacement interval | Change every 500 hours | p. 70 |
| Primary Fuel Filter check interval | Check every 10 hours | p. 70 |
| Fuel Sedimenter maintenance interval | Drain and Clean every 50 hours | p. 70 |
| Fan Belt Tension/Condition check interval | Check and Adjust every 50 hours | p. 70 |
| Fan Belt deflection | 7mm (0.28 in) approx. for 49 Nm (11 lbf, 5 kgf) approx. finger force | p. 102 |
| Track Gearbox Oil change interval | Change every 1000 hours | p. 70 |
| Track Gearbox Oil capacity (each) | 0.8 Litres (0.2 Gal) | p. 73 |
| Hydraulic Oil level check interval | Check every 10 hours | p. 70 |
| Hydraulic System capacity | 105 Litres (23.0 Gal) | p. 73 |
| Engine Oil level check interval | Check every 10 hours | p. 70 |
