2 - 10
Section E
9803/3280
Section E
2 - 10
Issue 3*
Technical Data
Relief Valve Pressures
Excavator Valve - Precision Control (Servo)
(Machines up to serial no. 931159)
Component Key:
1
Bucket
2
Dipper
3
Stabiliser
4
Stabiliser
5
Boom
6
Slew
7
Auxiliary relief valve
8
Tank port
9
Pilot operated check valve (hydraclamp)
10
Service ports
11
Load sense valve
12
Load sense drain regulator and relief valve
13
Inlet port
14
Hydraclamp solenoid
15
Auxiliary spool
bar
kgf/cm
2
lbf/in
2
Boom Ram Head Side
248 - 255
253 - 260
3600 - 3700
Boom Ram Rod Side
345 - 352
351 - 358
5000 - 5100
Bucket Ram Head Side
248 - 255
253 - 260
3600 - 3700
Bucket Ram Rod Side
248 - 255
253 - 260
3600 - 3700
Dipper Ram Head Side
248 - 255
253 - 260
3600 - 3700
Dipper Ram Rod Side
248 - 255
253 - 260
3600 - 3700
Slew Left and Right
262 - 269
267 - 274
3800 - 3900
Load Sense Relief Valve
†
208 - 212
213 - 216
3025 - 3075
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 Drain Regulator and Relief Valve
.
13
8
12
14
15
1
2
3
4
5
6
7
7
7
7
7
7
7
7
10
10
10
10
10
10
10
11
11
11
11
11
11
11
10
10
10
10
10
10
10
A402500
9
*
