2 - 7
Section E
9803/3280
Section E
2 - 7
Issue 2*
Technical Data
Relief Valve Pressures
Loader Valve - Variable Flow
bar
kgf/cm
2
lbf/in
2
Priority Relief Valve†
170 - 176
173 - 179
2450 - 2550
Auxiliary Relief Valves (A.R.V.) @ 0.5gal/min (1.9 litres/min)
Shovel Ram Head Side
170 - 174
173 - 177
2465 - 2520
Shovel Ram Rod side
306 - 314
312 - 320
4450 - 4550
† Note:
Steer circuit pressure is controlled by a relief valve housed in the hydraulic steer unit (Refer to Section H
Steering
).
The priority relief valve housed in the loader valve must be set at 2500 lb/in
2
, this will ensure it does not interfere with the
operation of the relief valve housed in the hydraulic steer unit.
Weight
:
2 Spool - TBA kg (TBA lbs)
3 Spool - TBA kg (TBA lbs)
Component Key:
1
Auxiliary (optional) service
2
Shovel service
3
Arms lift service
4
Pump inlet
5
Tank port
6
Load sense port (to pump)
7
Priority load sense port (from steer unit)
8
Priority work port (to steer unit)
9
Load sense carry over port (to backhoe valve)
10
Service ports
11
Auxiliary relief valve (rod side)
12
Auxiliary relief valve (head side)
13
Priority relief valve †
A273670
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