TM 5-3805-280-24-1
Tests
9025
A--Pressure Port
25
B--Pilot Hose
138
C--Pressure Relief Valve
Adjusting Screw and
Jam Nut
1. Connect a pressure gauge and T-fitting between
7. If circuit relief pressure is below specifications, the
both load lowering valves at pressure port (A).
circuit relief valves need to be reset.
2. Place a heavy load on the bucket.
a. Loosen the jam nut (C) on the circuit relief valve.
3. Extend the boom arm all the way out.
b. Turn adjusting screw (C) in to increase circuit
relief pressure.
4. Disconnect and plug pilot hose (B).
c. Hold adjusting screw and then tighten the jam
5. Move boom lever to the down position to force the
nut.
load lowering valve over relief.
8. Check the pressure setting again.
6. Record the relief pressure reading.
Circuit Relief--Specification
Pressure............................................ 37232 kPa (372 bar) (5400 psi)
CED,OUOE020,73 1926MAY992/2
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