Part of the JCB Repair Manuals.
Looking to overhaul your machine? This 229-page JCB Robot 185, 1105, Robot 1105, JCB skid steer loader, Perkins 1004-4HR, Perkins 1004-42AR service manual PDF (OEM #9803/8510) breaks down every hydrostatic pump and wheel hub assembly. You get full hydraulic schematics for the Series 40 pump, complete electrical circuit diagrams, and a thorough section of troubleshooting charts for the drive system. Open up to exploded views showing precise seal replacement procedures and step-by-step engine removal instructions. Lock down the 1/4-inch UNF Grade S bolts to exactly 14 Nm and confirm the transmission has a steady oil supply before testing forward movement. A dead loader ruins your schedule. Grab this bookmarked file right on your tablet, jump straight to the required schematic, and start wrenching.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 6-17 | Identifying Your Machine, Torque Settings, Service Tools, Sealing and Retaining Compounds |
| Care and Safety | 18-27 | Safety Notices, General Safety, Operating Safety, Maintenance Safety, Safety Decals |
| Routine Maintenance | 28-59 | Fluids, Capacities and Lubricants, Fuel System, Service Schedules, Loader Arm Safety Strut, Greasing, Electrical System, Hydraulic System |
| Optional Attachments | 60-69 | Quick Release Couplings, Connecting/Disconnecting Hoses, Shovels, Pallet Forks, Manure/Silage Fork with Top Grab, Attachment Frame, Problem Solving |
| Body and Framework | 70-81 | Seat and Floor Plate, Glazing, Door, Loader Arm |
| Electrics | 82-107 | Technical Data, Test Methods, Battery, Alternator, Starter Motor, Circuit Diagrams |
| Controls | 108-111 | Safety Restraint Bar, Locking Mechanism |
| Technical Data | 114-119 | Auxiliary Pump, High-Flow Pump, Main Pump, Loader Joystick, Transmission Joystick, Servo Joysticks, Hydraulic Motors, Loader Valve Block |
| Descriptions | 120-138 | Hydraulic Contamination |
| Problem Solving | 139-145 | Hydrostatic Transmission, Hydraulic System, Pump, Motor, Servo Unit, Brake Valve, Joystick, Chain |
| Pumps | 146-174 | Main Pump, Pump/Engine Couplings, Series 40 Hydrostatic Pump, Auxiliary Pump, High-Flow Pump, Series 42 Hydrostatic Pump, Drive Motor |
| Valves | 175-185 | Loader Valve, Main Relief Valve, Auxiliary Relief Valves, Pressure Reducing Solenoid Valve, Brake Valve |
| Servo Joysticks | 186-188 | Joystick Flange, Hydraulic Flexible Hoses, Electrical Connection, Handle Assembly, Valve Body, Valve Units |
| Rams | 189-194 | Lift and Compensating Rams, Crowd Ram, Piston Head, Rod Seals, Piston Rod |
| Schematic Hydraulic Circuit | 195-213 | Hydraulic Tank, Hydraulic Filter |
| Transmission | 214-221 | Tyres and Wheels, Wheel Hub Assembly |
| Brakes | 222-225 | Towing/Winching |
| Engine | 226-229 | Technical Data, Removal and Replacement |
Documents This Manual Refers To
The manufacturer cites these publications by number. We carry them:
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| UNF Grade 'S' Bolts Torque Setting (1/4 inch bolt) | 14 Nm (1.4 kgf m, 10 lbf ft) | p. 9 |
| Metric Grade 8.8 Bolts Torque Setting (M5 bolt) | 7 Nm (0.7 kgf m, 5 lbf ft) | p. 9 |
| Hydrostatic Transmission Problem: No drive in any direction | Check supply of oil to pump. | p. 139 |
| Hydraulic connections torque | 30 Nm (22 lbf ft, 3 kgf m) | p. 186 |
| Loader Valve Tie Rod 10 torque | 44.75 Nm (33.0 lbf ft, 4.6 kgf m) | p. 178 |
| Main Hydraulic Filter Type | High Pressure Spin - On, 5 micron | p. 115 |
| High-Flow Filter Type | 17 micron | p. 115 |
| Series 40 Hydrostatic Pump | ||
| Shaft Seal Replacement | See page 152 for the shaft seal replacement specification | p. 152 |
| Drive Motor up to machine no. 804075 | ||
| O-rings, Sealing Rings, Gaskets Replacement | discarded and replaced by new ones | p. 168 |
| all (up to machine number 804423) | ||
| Main Pump (2-off) Maximum Working Pressure | 414 bar (6003 lbf/in2) | p. 114 |
| Auxiliary Pump (up to machine number 804423) | ||
| Auxiliary Pump Displacement | 75 litres (16.5 UK gal; 19.8 US gal) per min. at 2200 rev/min | p. 114 |
| Loader Joystick (up to machine number 804423) | ||
| Loader Joystick (Single lever drive control) Forward/Reverse positions output at 100% stroke | 19 bar (275 lbf/in2) | p. 114 |
