jcb ROBOT 150, Service Manual

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ii
Section E
Hydraulics
9803/8500
Section E
ii
Issue 7*
Contents Page No.
Drive Motors
Removal and Replacement
- Drive Sprocket 13 - 1
- Motors 13 - 1
Dismantling and Assembly
- Motors up to machine no. 676354 13 - 3
- Motors from machine no. 676355 13 - 5
Problem Solving
Hydrostatic Transmission
- Problems, Causes and Remedies 14 - 1
Checking for Faulty Pump or Motor 14 - 3
Checking Wheel Speed 14 - 4
Machine veers to one side when travelling 14 - 5
Checking Motor Leakage Rate 14 - 8
Pump Main Pressure Test Points 14 - 9
Checking Brake Circuit Pressure 14 - 10
Checking the Joystick Hydraulic Lines 14 - 11
Valves
Loader Valve Removal and Replacement 16 - 1
Loader Valve up to machine number 677000
- Dismantling and Assembly 16 - 3
- Main Relief Valve and Auxiliary Relief Valves
- Removal, Replacement, Dismantling and Assembly 16 - 5
- Pressure Testing - Main Relief Valve 16 - 6
- Pressure Testing - Auxiliary Relief Valve 16 - 7
Loader Valve from machine number 677001
- Dismantling and Assembly - Valve and Manual Spool 16 - 8
- Dismantling and Assembly - Servo Spool 16 - 10
- Dismantling and Assembly - Solenoid Spool 16 - 11
- Main Relief Valve and Auxiliary Relief Valves
- Removal, Replacement, Dismantling and Assembly 16 - 12
- Pressure Testing - Main Relief Valve 16 - 13
- Pressure Testing - Auxiliary Relief Valve 16 - 14
Check Valve 17 - 1
Pressure Reducing Solenoid Valve (up to machine no. 677999) 18 - 1
Brake Valve (from machine no. 678000) 18 - 3
Servo Joysticks
Removal and Replacement 20 - 1
Dismantling and Assembly 20 - 3
Rams
Removal and Replacement
- Lift and Compensating Rams 23 - 1
- Crowd Ram 23 - 2
Dismantling and Assembly
- Typical Ram 23 - 3
Hydraulic Filter
Removal and Replacement 25 - 1
Hydraulic Tank
Suction Strainer - Removal and Replacement 27 - 1
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