JCB Robot 190 & 1110 Skid Steer Service Manual 2004–2007 (P/N 9803/9460-1)

JCB service manual P/N 9803/9460-1, 2004 edition, covers the Robot 190 and 1110 skid steer loaders, including standard and high-flow configurations. The machine-identification section lists 2004–2007 PIN year codes.

PDF Search, Navigation and Page Count

Text search and diagram viewing: Text search works across the maintenance, electrical, hydraulic, transmission and engine sections, but some diagram labels and controls-section text do not search correctly. Embedded bookmarks are only partly usable, with some broken or misdirected links. Small labels in the dense wiring and hydraulic drawings require zooming.

One printable, English-language 390-page PDF, including the original cover, section dividers and 22 intentionally blank pages already included in the total.

Hydrostatic Drive, Loader Hydraulics and Running Gear

These selected contents outline the main workshop coverage rather than reproduce the full contents list. Additional topics include attachment coupling maintenance and rivet-nut installation.

• Hydrostatic diagnosis: Pump-versus-motor fault isolation, wheel-speed checks, veering diagnosis, transmission-pump neutral adjustment, motor leakage tests and post-service startup procedures.
• Loader hydraulics: Standard and high-flow loader-pump disassembly, servo and manual loader valves, lift and tilt rams, and servo joystick service.
• Running gear: Drive-motor and brake disassembly, wheel-hub service, drive-chain replacement, and tracked-machine idler, roller and track-frame work.
• Electrical troubleshooting: Wiring diagrams, harness interconnections, charging and starting tests, multimeter methods, and alternator and starter-motor repair procedures.
• Scheduled maintenance: Service schedules, lubrication points, fluid-capacity tables, filter changes, coolant service, fuel-system bleeding, and wheel and track checks.
• Engine coverage: JCB 444 specifications and routine maintenance; full engine service information is covered by a separate publication.

JCB wrote this manual for distributor service engineers receiving or having completed JCB training; it assumes sound workshop practice, safety knowledge and experience maintaining hydraulic earthmoving equipment.

Maintenance and Workshop Reference

The service schedules cover 10-, 50-, 500-, 1,000-, 2,000- and 6,000-hour intervals, including pre-start checks and functional tests with final inspection items.

Maintenance instructions cover greasing and oiling points, battery service, fuses and relays, air-filter servicing, engine oil and filter changes, coolant replacement and front-end accessory drive belt inspection and replacement. Fuel-system work includes filter and water-separator service and bleeding.

Hydraulic filter changes, drive-chain lubrication, tire and wheel checks, track adjustment and storage procedures are also included. For JCB 444-equipped machines, the coolant table specifies protection down to -56°C (-68°F) at a 60% antifreeze concentration.

For a working shop, the practical benefit is having service intervals, component locations, test values and component overhaul procedures in the same factory manual.

Hydraulic Diagnosis and Pump Service Limits

Hydrostatic fault-finding charts connect drive symptoms to checks for charge pressure, pump output, motor leakage, relief valves and joystick hydraulic supply. High-flow pressure and flow tests address poor attachment performance and hydraulic overheating.

Power Management System: P.M.S. coverage includes warning-light blink codes, fault tracing and controller calibration after replacement. The calibration section identifies test button 701/80490 and explains the different setups for machines with and without sensitivity control.

Transmission-pump limits: The described work includes input-shaft seal replacement, output-cover O-ring replacement, and relief- and charge-valve service. A complete internal pump rebuild is outside this manual’s scope and requires setup on a dynamic test jig.

The manual warns that disturbing the pump’s output-cover snap ring and bearing can upset internal alignment and make a total strip and rebuild necessary. Hydraulic service also specifies ISO 16/13 cleanliness and a dedicated startup procedure after pump or motor removal.

Loader-pump, valve and ram chapters provide step-by-step disassembly and assembly instructions, including JCB ram sealing and seal-protection methods. Tool references cover hydraulic pressure-test equipment, flow monitoring units and adapters.

Drive Motors, Wheel Hubs and Tracks

Drive-motor procedures distinguish single-speed, two-speed and tracked-machine assemblies, including brake-pack disassembly and inspection. Wheel-hub instructions extend to bearing preload selection, while drive-chain coverage includes replacement and adjustment.

Tracked-machine sections cover track removal and replacement, front idler and recoil units, rear idlers, guide rollers and track-frame removal. Rubber-track damage charts distinguish repairable damage from conditions requiring replacement.

Low track tension and badly worn sprocket teeth are identified as causes of core-bar separation; low tension is also a cause of detracking. The loader-arm removal/replacement view supports the separate body and framework procedures.

Safety: Working on heavy equipment involves high-pressure hydraulics and significant lifting capacities. Always review the integrated safety procedures before starting any physical work to help prevent severe injury.

Electrical Tests and Diagram References

The electrical section documents the 12-volt negative-ground system, primary and individual circuit fuses, relay locations, and continuity, resistance, frequency and diode testing. Charging- and starting-circuit tests accompany alternator and starter-motor removal, disassembly and assembly procedures.

Circuit Diagram Sheets 1–2, the Harness Structure drawing and Mainframe Harness interconnections support wire-number and circuit tracing. The starter-motor dismantling view and Standard and High-flow Servo Machines hydraulic circuit diagram provide component and system references.

JCB 444 Engine Coverage

Section K documents four-cylinder Tier 2 variants: 444 SA, naturally aspirated at 63 kW (85 bhp), and 444 SB, turbocharged at 74 kW (100 bhp).

Full engine service and overhaul information is not included. JCB directs full technical data and service information for the engine variants to publication 9806/3000, which is separate from this download.

A Preview of Pump Flow and Relief-Valve Data

At 2,200 rpm, the loader-pump tables list a maximum flow of 79.8 L/min (21 US gpm) at 225 bar for the standard pump and the high-flow pump’s loader section. The additional high-flow section is rated at 53.1 L/min (14 US gpm) at 220 bar.

The transmission high-pressure loop valve is specified at 414 bar (6,000 psi). Related reference tables distinguish zinc-plated and Dacromet fasteners, UNF and metric grades 8.8, 10.9 and 12.9, plus BSP and SAE hydraulic connections.