Looking for the exact factory procedures for your 2010-2012 JCB Workmax 800D utility vehicle? This 329-page service manual (OEM #9813/0450-1) covers the complete engine, transmission, and suspension rebuild process. Inside you get full electrical circuits to trace wiring faults, exploded views of the CVT gearbox, and step-by-step procedures for pulling the A-arm and suspension struts. Open to the troubleshooting section to quickly diagnose transmission slipping or steering rack wear before tearing anything apart. Verify the CVT pulley alignment to exactly 45-46 mm and refill the gearbox with exactly 1.0 litres of approved fluid at your next service. Stop hunting down obscure numbers online. Download this bookmarked PDF to your phone, walk right up to your machine, and start turning wrenches.
What's Inside This JCB Workmax 800D Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 1-19 | Introduction, Machine Description, Identifying Your Machine, Fastener Torque Chart, Service Tools, Consumables |
| Care and Safety | 20-37 | Safety Notices, Safety Check List, Safety Labels |
| Maintenance | 38-95 | Routine Maintenance, Fluids, Lubricants and Capacities, Service Schedules, Prepare the Machine for Maintenance, Cleaning the Machine, Checking for Damage, Greasing |
| Body and Framework | 96-123 | General Description, Load Bay, Chassis Panels, Fuel Tank, Cab |
| Electrics | 124-159 | Service Tools, Fault Finding, Harness System, Circuits, Battery, Alternator |
| Controls | 160-171 | Adjustments, Differential Lock, Four Wheel Drive Selector, Forward/Reverse Selector, Throttle, Park Brake, Service Brake Pedal |
| Transmission | 172-251 | Technical Data, CVT, Fault Finding, Gearbox, Speed Sensors, Front Differential, Rear Differential, Propshafts |
| Brakes | 252-285 | System Description, Fault Finding, Rear Brakes, Front Brakes, Park Brake, Brake Bleeding |
| Steering | 286-295 | System Description, Steering Rack, Wheel Alignment |
| Engine | 296-313 | Technical Data, Fault Finding, Exhaust, Starter Motor |
| Suspension | 314-329 | A Arm (Removal, Replacement), Suspension Strut (Removal, Ball Joint (Removal |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Wheel nut torque | 66 Nm | p. 93 |
| CVT Pulley Alignment Difference (dimensions E and F) | 45-46 mm | p. 181 |
| Engine (Coolant) Capacity | 2.8 Litres | p. 48 |
| Gearbox Capacity | 1.0 Litres | p. 48 |
| Antifreeze Concentration (Standard) | 50% | p. 49 |
| Brake Pad Minimum Thickness | 1 mm | p. 68 |
| Rear Axle Speed Sensor Operating Distance | 1 to 2.5 mm | p. 196 |
| Wheel Alignment (Front Wheel Toe-in) | 3 to 6 mm | p. 294 |
| Maximum Travel Speed | 40 kph | p. 176 |
| UNF Grade 'S' Fasteners (Condition 1) - 1/4 inch bolt torque | 11.2 Nm | p. 13 |
JCB Workmax 800D Common Problems This Manual Covers
JCB Workmax 800D transmission fluid leaking from housing and gearbox overheating under heavy load p. 181
Inspect the CVT belt and pulley system. Measure the CVT pulley alignment difference as shown on page 181. Adjust the alignment until the difference is exactly 45-46 mm. Drain the old fluid and refill the gearbox with exactly 1.0 Litres of approved fluid to prevent overheating.
Manual Section: TransmissionSpongy brake pedal feel or loud metal grinding noise from the front wheels during deceleration p. 68
Remove the wheels and inspect the brake calipers. Measure the friction material on all pads. Replace the pads immediately if thickness falls below the 1 mm minimum listed on page 68. Bleed the hydraulic lines and torque the wheel nuts to 66 Nm upon reassembly.
Manual Section: BrakesEngine temperature gauge pegs hot and radiator fan runs continuously during normal trail operation p. 49
Check the cooling system for leaks around the radiator hoses. Drain the system and refill with 2.8 Litres of fresh coolant. Verify you are using a 50% standard antifreeze concentration as specified on page 49. Clean any mud packed into the radiator cooling fins.
Manual Section: EngineSteering pulls hard to one side and front tires show severe uneven inner tread wear p. 294
Inspect the steering rack and tie rod ends for excessive play. Adjust the tie rods to correct the front wheel toe-in. Set the toe-in measurement between 3 to 6 mm as detailed on page 294. Torque all 1/4 inch mounting bolts to 11.2 Nm.
Manual Section: SteeringFrequently Asked Questions
What is the torque spec for JCB Workmax 800D wheel bolts?
The torque specification for JCB Workmax 800D wheel nuts is 66 Nm (59 lbf ft) for both front and rear wheels. It is recommended to check these torques daily before work and at two-hour intervals when the machine is new or a wheel has been removed until the values are constant.
What is the torque spec for JCB Workmax 800D engine fasteners?
For the engine, the oil drain plug should be torqued to 54-64 Nm (40-47 lbf ft). When changing the oil filter, screw the new filter in hand tight only, then tighten one additional turn using an oil filter wrench.
What are the replacement specifications for Pinion shaft S spacer T?
When assembling the rear differential, it is important to inspect the condition of the pinion shaft S spacer T for damage or wear. If any damage or wear is found, these components should be replaced as necessary.
How do you fix JCB Workmax 800D transmission fluid leaking from housing and gearbox overheating under heavy load?
Inspect the CVT belt and pulley system. Measure the CVT pulley alignment difference as shown on page 181. Adjust the alignment until the difference is exactly 45-46 mm. Drain the old fluid and refill the gearbox with exactly 1.0 Litres of approved fluid to prevent overheating.
What do I get after purchasing this JCB Workmax 800D manual?
You get a 329-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Am I able to print pages from this manual?
Yes. The PDF is DRM-free, so you can print whatever sections you need to take out to the shop. Standard letter or A4 paper works fine.
Can I find wiring schematics in this JCB Workmax 800D manual?
Yes, this JCB Workmax 800D Service Manual includes complete electrical wiring diagrams, wire routing, and connector pinouts.
Document Quality
This document is a scanned PDF with an OCR layer, allowing you to search and copy the full text. The text quality is crisp and easy to read throughout. Diagrams and illustrations are raster images, which remain clear at normal viewing but may show some pixelation when highly zoomed, though labels are readable. The pages are clean with no scan artifacts or skewed content. Please note there are several "Page left intentionally blank" filler pages included.
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