Running a 1998–2005 JCB Robot 190 or 1110 and need factory-level procedures? OEM #9803/8530 issue 8 runs 264 pages and also covers the rest of the Robot family: 160, 170, 170 HF, 180, and 180 HF. It carries full hydraulic schematics for every servo and manual build, with single and dual lever configurations both documented, plus harness diagrams for the mainframe, panel, and engine circuits. Extensive torque tables cover wheel nut torque at 220 Nm (162 lbf ft) and the main filter inlet port adapter at 48 Nm, plus comprehensive rebuild steps for pumps, motors, valves, and rams. Troubleshooting covers transmission faults, loader circuit problems, and high-flow failures. Bookmarked and searchable, it opens on any device, so you reach the right section before picking up a wrench.
What's Inside This JCB ROBOT 190, 1110 Manual
| System | Pages | Key Topics |
|---|---|---|
| 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, 1110 Common Problems This Manual Covers
JCB Robot 190 1110 hydraulic functions weak or slow, bucket won't lift to full height
Check the hydraulic oil level; the system holds 26 litres (page 28) and low fluid drops pressure immediately. Verify the main filter (page 182) is not clogged: a blocked 5 micron screen starves the pump. Measure system pressure at the main relief valve; it must hold 185-190 bar (page 116). Below that, expect pump wear or internal circuit bypass.
Manual Section: Loader Circuit Problem SolvingMachine will not travel or loses all drive power on one side
Work through the hydrostatic troubleshooting guide first. Confirm the hydraulic oil is clean and at 26 litres (page 28); contaminated fluid kills charge pressure fast. If only one side is dead, isolate the drive motor on that side and test for internal bypass. Inspect the manual control linkage for binding or disconnection before condemning the pump.
Manual Section: Hydrostatic Transmission Problem SolvingLoader boom arms drift down gradually under load when held in raised position
Remove the lift cylinder and pressure-test the piston head seals to confirm bypass. Fit new seals (page 230) if bypass is found. Also verify the main relief valve holds 185-190 bar (page 116): a weeping relief bleeds pressure across the circuit even with good cylinder seals. Test the valve before ordering cylinder parts.
Manual Section: Loader Circuit Problem SolvingEngine starts and runs normally but loader and travel controls remain completely unresponsive
Verify the seat bar and operator presence switch close fully; the interlock circuit runs on 12V (page 77). Test each with a multimeter for continuity through the full lever throw. Inspect connector pins at the safety restraint assembly (page 107) for corrosion or push-back: these pass visual checks but open under vibration. Clean, reseat, and retest before replacing the switch.
Manual Section: Electrical System Problem SolvingHydraulic oil overheats during sustained bucket work or in hot weather conditions
Clean the oil cooler and radiator fins; chaff blockage is the most common site cause. Confirm the hydraulic tank is at 26 litres (page 28): low oil cycles faster and runs hotter. Replace the main filter (page 182) if restricted. For overheating that persists under load, check for excessive back pressure from a stuck valve spool or internal bypass.
Manual Section: Loader Circuit Problem SolvingFrequently Asked Questions
What are the torque specs for JCB Robot 190/1110 wheel motor bolts?
For wheeled machines, the motor mounting bolts (D) should be torqued to 244 Nm (180 lbf ft, 25 kgf m). For the brake assembly capscrews on a single speed drive motor, item 7 (8 off) should be torqued to 70 - 77 Nm (52 - 57 lbf ft, 7.0 - 7.8 kgf m), and item 1 (12 off) to 14 - 16 Nm (10 - 12 lbf ft, 1.4 - 1.6 kgf m). For tracked machine drive motor brake assembly capscrews, item 9 (8 off) should be torqued to 117 - 122 Nm (86 - 90 lbf ft, 11.9 - 12.4 kgf m), and item 1 (12 off) to 35 - 39 Nm (26 - 29 lbf ft, 3.6 - 4.0 kgf m).
What are the torque specs for the JCB Robot 190/1110 hydraulic pump?
For the transmission pump, the securing bolts (E) should be torqued to 150 Nm (15.3 kgf m, 111 lbf ft), and hydraulic connections to 45 - 50 Nm (4.6 - 5.1 kgf m, 33 - 37 lbf ft). For the loader pump, the securing bolts (G) should be torqued to 77 Nm (7.9 kgf m, 57 lbf ft), and hydraulic connections to 45 - 50 Nm (4.6 - 5.1 kgf m, 33 - 37 lbf ft).
What are the replacement specifications for hydraulic filters?
When replacing hydraulic filters, new 5 micron rated filter elements, part number 581/18020, should be used. For the main filter, lubricate seal D on the new filter canister with clean engine oil and screw it on hand tight only. For the high-flow filter, lubricate seal F on the new filter canister with clean engine oil and screw it on hand tight only.
What are the replacement specifications for hydraulic oil seals?
When replacing hydraulic oil seals, always fit new seals and 'O' rings, cleaned thoroughly and lubricated with petroleum jelly or engine oil during assembly. For rod seals, use a seal fitting tool (892/00334) to position them correctly so the seal lip faces inwards and stays undamaged during installation. The split in the piston seal ring must sit at right angles to the center line of the roller.
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.
Document Quality
This document is a scanned PDF, featuring an OCR layer that allows you to search and copy the full text. The text quality is consistently crisp and easy to read throughout. Diagrams and illustrations are raster images, but they are clear, well-defined, and their labels are fully readable. All pages are clean with no noticeable scan artifacts, stains, or skewed content.
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