Part of the JCB Repair Manuals.
This is the JCB Robot 190 and 1110 Service Manual (publication 9803/8530 issue 8), the 264 page factory workshop document for these skid steer loaders built from 1998 to 2005. It covers machines running the Perkins 1004-42 engine in AR, AK, RE and RG builds, both wheeled and tracked.You get full dismantling and assembly procedures for the hydrostatic transmission, drive motors, loader valves, rams and filters, plus electrics, controls, brakes and engine removal. Torque settings, hydraulic circuit schematics and problem solving charts are included so you can trace weak drive, boom drift or hydraulic faults yourself.Whether you are rebuilding a transmission pump, chasing a hydraulic leak or renewing track components, this manual gives the workshop level detail an owner or independent mechanic needs to complete the repair correctly.
What's Inside This JCB ROBOT 190, ROBOT 1110 Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 1-18 | Identifying your Machine, Torque Settings, Service Tools, Sealing and Retaining Compounds |
| Care & Safety | 19-26 | Safety Notices, General Safety, Operating Safety, Maintenance Safety, Safety Decals |
| Attachments | 55-60 | Quick Release Couplings, Connecting/Disconnecting Hoses, Shovels (6-In-1 Shovels), Pallet Forks, Manure/Silage Fork with Top Grab, Attachment Frame |
| Body & Framework | 61-75 | Seat and Pump Cover (Seat Removal and Replacement, Pump Cover Removal and Replacement), Windows (Front Screen Removal and Replacement, Glazing) |
| Electrics | 76-106 | Technical Data (Light Bulbs, Circuit Protection, Sensing Switches) |
| Controls | 107-112 | Safety Restraint (Removal, Replacement), Manual Controls Dismantling and Assembly, Manual Control Levers, Manual Control Linkage - Hand Operated Loader |
| Descriptions | 115-136 | Technical Data, Transmission Pump Operation, Transmission Motor Operation, Servo Transmission Operation, Neutral, Forward, Reverse |
| Problem Solving | 137-154 | Towing/Winching, Transmission, Loader Circuit, Self Levelling Valve, High-Flow Circuit |
| Schematic Hydraulic Circuits | 155-178 | Servo Machines - Ar and Ak Engine Builds, Standard Circuit - Single Lever Drive Control, Standard Circuit - Dual Lever Drive Control, High-Flow Circuit - Dual Lever Drive Control, Servo Machines - Re and Rg Engine Builds, Manual Machines - Ar and Ak Engine Builds, Standard Circuit |
| Transmission Pump | 179-191 | Hydraulic Contamination, Circuit Diagram, Standard Circuit - Re and Rg Engine Build, High-Flow Circuit - Re and Rg Engine Build, Hydraulic Fluid Quality, Effects of Contamination, Cleaning Operation, Contaminant Standards |
| Drive Motors - Wheeled Machines | 192-205 | Loader Pump, Removal and Replacement, Dismantling and Assembly - Standard, Dismantling and Assembly - High Flow, Motor Removal and Replacement, Motor Dismantling and Assembly - 2 Speed, Motor Dismantling and Assembly - Single Speed |
| Valves | 206-225 | Drive Motors - Tracked Machines, Motor Removal and Replacement, Motor Dismantling and Assembly, Loader Valve - Servo Machines, Dismantling and Assembly, Loader Valve - Manual Machines, Removal and Replacement |
| Rams | 226-231 | Removal and Replacement, Loader Arm Lift Ram, Quickhitch Tilt Ram, Dismantling and Assembly, Typical Ram |
| Hydraulic Filters | 232-233 | Main Filter Removal and Replacement, High Flow Filter Removal and Replacement |
| Transmission | 234-242 | Tyres and Wheels (Roadwheels, Removal and Replacement), Wheel Hubs (Removal and Replacement, Dismantling and Assembly) |
| Brakes | 243-244 | Braking System Components, Preparation for Towing/Winching, After Towing/Winching |
| Tracks | 245-259 | Track Damage, Track Repair, Track (Removal and Replacement), Motor (Removal and Replacement), Idler Wheels and Rollers (Removal and Replacement) |
| Engine | 260-264 | Technical Data, Removal and Replacement (Ar and Ak Engine Builds, Re and Rg Engine Builds, Torque Settings) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Wheel Nut Torque (Front and Rear) | 220 Nm (162 lbf ft; 22.5 kgf m) | p. 43 |
| Main Filter Element Replacement | new 5 micron rated filter element, part number 581/18020 | p. 182 |
| Main Filter Inlet Port Adapter Torque | 48 Nm | p. 232 |
| Servo Pump Input Shaft Lip Seal Replacement | new lip seal 4 | p. 190 |
| Typical Ram Piston Head Seals Replacement | new piston head seals 3 | p. 230 |
| Alternator Belt Tension (Deflection) | 10 mm (3/8 in) | p. 52 |
| Alternator Belt Replacement | new Alternator Belt | p. 52 |
| Battery Voltage (in 'start' position) | 10.0 V approximately | p. 104 |
| Reverse Alarm Position Switches (manual) Operational Value | closes when lever turns 1.5-2° from neutral position | p. 81 |
| Servo Cut-off Valve Hoses Torque | 25Nm (18 lbf ft) | p. 222 |
| UNF Grade 'S' Bolts Torque (1/2 inch) | 117 Nm | p. 5 |
| Metric Grade 8.8 Bolts Torque (M10) | 56 Nm | p. 5 |
JCB ROBOT 190, ROBOT 1110 Common Problems This Manual Covers
Weak, slow or unresponsive hydraulics
Sluggish loader or auxiliary function often traces to low oil, a clogged filter, aerated fluid or pump wear. The Problem Solving section gives fault charts for the transmission, loader circuit, self levelling valve and high-flow circuit.
Manual Section: Problem Solving p. 137Machine will not travel or loses drive
Loss of drive power on these hydrostatic loaders can come from worn drive motors, charge pressure loss or contaminated oil. The Drive Motors section covers motor removal, replacement and dismantling for both single and two speed units.
Manual Section: Drive Motors - Wheeled Machines p. 192Loader arms drift down under load
Arms that creep down usually mean a cylinder seal is bypassing or a valve is leaking internally. The Rams section covers removal, replacement and reseal of the loader arm lift ram and quickhitch tilt ram.
Manual Section: Rams p. 226Contaminated hydraulic oil
Dirt in the system accelerates pump and motor wear and causes erratic operation. The Transmission Pump section explains hydraulic contamination, cleaning operation, contaminant standards and fluid quality.
Manual Section: Transmission Pump p. 179Safety interlock or reverse alarm faults
A machine that starts but stays immobilised, or a reverse alarm that misbehaves, often points to a sensing switch or wiring fault. The Electrics section covers technical data, circuit protection and sensing switches.
Manual Section: Electrics p. 76Clogged hydraulic filter
A blocked filter starves the system and restricts flow. The Hydraulic Filters section gives the main filter and high-flow filter removal and replacement procedures for restoring clean flow.
Manual Section: Hydraulic Filters p. 232Frequently Asked Questions
Which machines does this manual cover?
It is the service manual for the JCB Robot 190 and 1110 skid steer loaders built from 1998 to 2005, in AR, AK, RE and RG engine builds, covering both wheeled and tracked machines.
Does it cover the different engine builds?
Yes. The Engine section gives technical data and removal and replacement steps for the AR and AK builds and the RE and RG builds, so procedures match your machine. p. 260
Can I use it to diagnose hydraulic and transmission faults?
Yes. The Problem Solving section provides fault charts for the transmission, loader circuit, self levelling valve and high-flow circuit to help pin down the cause before you strip anything. p. 137
How soon can I get the manual?
Delivery is instant. The download link is available straight after checkout, so there is no waiting for a physical copy to ship.
What do I get after purchasing this JCB ROBOT 190, 1110 manual?
Immediate download of the complete 264-page searchable Service Manual. Open it on any device, whether that's a laptop at your desk or a phone in the field.
Am I able to print pages from this manual?
No restrictions at all. Print individual pages, full chapters, or the entire manual. The PDF is completely unlocked.
Are there wiring harness diagrams in this JCB ROBOT 190, 1110 manual?
Included. The JCB ROBOT 190, 1110 Service Manual covers complete wiring harness diagrams, electrical circuits, and connector pinouts.


















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