16 - 12
Main Relief Valve and Auxiliary Relief
Valves
Note:
The M.R.V.
X
and A.R.V.
Y
are identical in design as
shown at
A
. A.R.V.’s
Z
have an anti-cavitation facility and are
shown at
B
. The optional third spool may or may not have
A.R.V.’s fitted depending on attachments specified.
Removal
Ensure that the engine is stopped and hydraulic pressure
released from the system.
Each valve is removed by unscrewing body
1
.
Dismantling and Assembly
Servicing is limited to replacing the three ‘O’ ring seals, two
on the valve cartridge and one on the cap. The seal on the
piston is not serviceable; if this or any other part of the valve
is damaged, the complete valve must be renewed.
Lubricate parts with JCB 'Special' Hydraulic Fluid before
assembly.
The M.R.V. can be tested/adjusted in situ (see page E/16 - 13).
The A.R.V's are tested/adjusted using a test block (see page
E/16 - 14).
Replacement
Replacement is a reversal of the removal procedure.
Torque Settings
Item
Nm
lbf ft
kgf m
1
20 - 24
15 - 18
2.0 - 2.5
Section E
Hydraulics
9803/8500
Section E
16 - 12
Issue 1
Valves
A
A
B
B
Y
Y Z
Z
Z
Z
X
X
S257840/1
1
1
1
1
A270210
A270220
Содержание ROBOT 150
Страница 2: ......
Страница 21: ...5 2 Safety Decals cont d Section 2 Care and Safety 9803 8500 Section 2 5 2 Issue 2...
Страница 77: ...Attachments Section A Section A 7 7 9803 8500 Issue 1 Backhoe...
Страница 83: ...3 4 Side Windows Section B Body and Framework 9803 8500 Section B 3 4 Issue 1 Glazing 136161 1 1 2 2 3 3 4 4...
Страница 86: ...5 1 Section B Body and Framework 9803 8500 Section B 5 1 Issue 1 Loader Arm 167760 Z Z B B A A X X Y Y...
Страница 97: ...4 3 Section C Electrics 9803 8500 Section C 4 3 Issue 1 Alternator S213570...
Страница 123: ...1 1 Section D Controls 9803 8500 Section D 1 1 Issue 1 Safety Restraint Bar S168160 1...
Страница 125: ...2 1 Section D Controls 9803 8500 Section D 2 1 Issue 1 Throttle Controls S168150D...
Страница 142: ...Hydraulics 9803 8500 Issue 1 4 1 4 1 Descriptions Section E Section E...
Страница 145: ...Hydraulics 9803 8500 Issue 2 5 2 5 2 Descriptions Section E Section E...
Страница 146: ...Hydraulics 9803 8500 Issue 2 5 3 5 3 Descriptions Section E Section E...
Страница 149: ...Hydraulics 9803 8500 Issue 2 5 6 5 6 Descriptions Section E Section E...
Страница 152: ...Hydraulics 9803 8500 Issue 1 5 9 5 9 Descriptions Section E Section E...
Страница 163: ...10 1 Section E Hydraulics 9803 8500 Section E 10 1 Issue 1 Pumps 168150...
Страница 165: ...10 3 Section E Hydraulics 9803 8500 Section E 10 3 Issue 1 Pumps 168030...
Страница 167: ...10 5 Section E Hydraulics 9803 8500 Section E 10 5 Issue 1 Pumps 168160...
Страница 175: ...11 1 Section E Hydraulics 9803 8500 Section E 11 1 Issue 2 Pumps 167750...
Страница 179: ...13 1 Section E Hydraulics 9803 8500 Section E 13 1 Issue 1 Drive Motors 167720 S167720A...
Страница 181: ...13 3 Section E Hydraulics 9803 8500 Section E 13 3 Issue 2 Drive Motors S167730 A A B S167730B S167730A...
Страница 183: ...13 5 Section E Hydraulics 9803 8500 Section E 13 5 Issue 1 Drive Motors S243720 X X S243870...
Страница 212: ...18 1 Section E Hydraulics 9803 8500 Section E 18 1 Issue 2 Valves S204980 X X 3 B A 4 2 1 5...
Страница 215: ...20 1 Section E Hydraulics 9803 8500 Section E 20 1 Issue 1 Servo Joysticks S167960...
Страница 217: ...20 3 Section E Hydraulics 9803 8500 Section E 20 3 Issue 1 Servo Joysticks 167950...
Страница 221: ...23 3 Section E Hydraulics 9803 8500 Section E 23 3 Issue 1 Rams S167800...
Страница 241: ...1 2 Section F Transmission 9803 8500 Section F 1 2 Issue 2 Tyres and Wheels 167861 167811...
Страница 243: ...1 4 Section F Transmission 9803 8500 Section F 1 4 Issue 2 Tyres and Wheels 167851...
Страница 253: ...2 1 Section K Engine 9803 8500 Section K 2 1 Issue 1 Removal and Replacement S167990...