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Section E
23 - 6
Auxiliary Relief Valves - Using Hand Pump
4
Install the A.R.V. sub-assembly into setting body 2.
Make sure that the adjusting pin 3 correctly locates in
adjusting screw 9.
Make sure that the lock nut 10 correctly locates in the
setting body socket - the anti-cavitation cone should
still be closed, as shown at B.
5
Install the A.R.V. sub-assembly and setting body into
test block 1. Make sure that the assembly is installed in
the port marked 'RV' (relief valve).
6
Connect a hydraulic hand pump to port 'P' (pump) of
the test block 1. Make sure that the hand pump is filled
with JCB Hydraulic fluid.
Connect a 0 to 400 bar (0 to 6000 lbf/in
gauge to port 'G' (gauge) of the test block 1.
Port 'T' (tank) can be left open when using a hydraulic
hand pump.
7
Raise the pressure at the valve inlet using the hydraulic
hand pump, when the A.R.V. 'cracks' and oil escapes
from the port marked ' T' the pressure gauge will
indicate the A.R.V. setting.
If the A.R.V. setting is correct, move to step 12.
If the A.R.V. setting is not correct, move to step 8.
9803/3280
Hydraulics
Service Procedures
2
) pressure test
Purchased from www.WorkshopManuals.co.uk
0
9
B
S162570F
S162570F
Section E
23 - 6
3
2
S162570D
1
S162570E
1
Issue 1
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