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Section E
2 - 10A
Relief Valve Pressures
Excavator Valve - Precision Control (Servo)
(Machines from January 2003)
Auxiliary Relief Valves (A.R.V.)
Boom Ram Head Side
Boom Ram Rod Side
Bucket Ram Head Side
Bucket Ram Rod Side
Dipper Ram Head Side
Dipper Ram Rod Side
Slew Left and Right
Load Sense Relief Valve †
Note: Instructions for pressure testing and adjustment are described in Service Procedures, Loader Valve - Pressure
Testing.
† Note: For pressure testing and adjustment of the load sense relief valve, see Service Procedures, Pressure Testing, Load
Sense Relief Valve.
Component Key:
1
Auxiliary (options)
2
Bucket
3
Dipper
4
Stabiliser
5
Stabiliser
6
Boom
7
Slew
8
Auxiliary relief valves
10
11
14
T
13
P
M
9803/3280
Hydraulics
Technical Data
1
9
A
15
T3
15
C
B
8
12
Purchased from www.WorkshopManuals.co.uk
bar
245
350
255
255
255
255
265
250
9
Anti-cavitation valve
10
Load sense relief valve
11
Flow regulator valve
12
Hydraclamp solenoid
13
Inlet port
14
Tank port
15
Service ports
2
3
4
8
8
A
A
A
15
15
15
15
15
15
15
15
B
B
B
8
8
Section E
kgf/cm
2
lbf/in
2
250
3550
355
5000
260
3700
260
3700
260
3700
260
3700
270
3850
255
3650
5
6
7
8
8
A
A
A
15
15
15
15
B
B
B
T
8
8
2 - 10A
10
T1
LS
P
M
A403680
Issue 1
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