Part of the JCB Repair Manuals.
Built specifically for these mini-excavators, this 216-page JCB 8027Z, 8032Z, HL 403C-15 Service Manual PDF (OEM #9803/9300) breaks down every track gearbox, slew motor, and hydraulic pump procedure. Complete electrical circuit diagrams, full hydraulic schematics detailing hose routing, and clear troubleshooting trees help you isolate faults fast. Look through detailed exploded views of the bucket ram linkage and follow step-by-step teardowns for the servo hand controllers. Confirm your slew crossline relief valves are operating at exactly 165 bar, then dial in the rubber track tension between 70 and 90 mm before sending the machine back to the dirt. Guesswork burns shop hours and wrecks profit margins. Open this bookmarked digital reference on your tablet right next to the undercarriage, and get back to turning wrenches.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 3-56 | Identifying Your Machine, Preparation for Storage, Operation, Using the Attachments and Site Safety, Using the Attachments, Moving a Disabled Machine, Transporting the Machine |
| Care & Safety | 57-62 | Safety Notices, General Safety, Operating Safety, Maintenance Safety |
| Routine Maintenance | 63-78 | Fluids, Lubricants, Capacities and Specifications, Torque Settings, Hydraulic Fittings and Torque Settings, Fuel System, Coolant Mixtures, Service Schedules |
| Optional Equipment | 79-82 | General Description |
| Body & Framework | 83-96 | General Description, Bucket Ram Pivot and Linkage, Dipper, Boom, Slew Ring, Kingpost, Glazing |
| Electrics | 97-112 | Technical Data, Battery, Fan Belt, Alternator, Starter Motor, Beacon, Circuit Diagram, Wiring Harnesses |
| Controls | 113-121 | Servo Hand Controllers, Dismantling and Assembly, Fault Finding, Maintenance Specification |
| Hydraulics | 122-185 | Technical Data, Hydraulic Circuit, Hydraulic System General Fault Diagnosis, Hydraulic Pump, Track Motor, Slew Motor, Hydraulic Pump Flow Testing, Hose and Pipe Connections |
| Gearboxes | 186-196 | Technical Data, Track Gearbox, Slew Gearbox |
| Track & Running Gear | 197-214 | General Description, Tracks, Track Rollers, Track Idler and Recoil Unit, Driven Sprocket, Track Roller Metallic Face Seals |
| Engine | 215-216 | Technical Data |
Documents This Manual Refers To
The manufacturer cites these publications by number. We carry them:
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Track tension (rubber track) | between 70 mm (2.8 in.) and 90 mm (3.6 in.) | p. 77 |
| Track tension (steel track) | 120 mm (4.8in.) | p. 202 |
| Motor to undercarriage bolts torque | 98 Nm (72 lbf ft) | p. 65 |
| Slew Crossline Relief Valves operating pressure | 165 bar (2393 lbf/in2) | p. 124 |
| Slew Crossline Relief Valves adjustability | not pressure adjustable | p. 175 |
| Fuel injection pump torque | 15 Nm (11 lbf ft) | p. 216 |
| Battery Type | Type 058 | p. 99 |
| Battery Voltage | 12 V | p. 99 |
| Fuel Tank Capacity | 43.0 L | p. 64 |
| Engine Oil Capacity | 4.5 L | p. 64 |
| Hydraulic Tank Capacity | 58.0 L | p. 64 |
| M8 Bolt Torque | 28 Nm | p. 65 |
