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TM 10-3930-643-34
HYDRAULIC SYSTEM TROUBLESHOOTING AND MAINTENANCE.
12-3.
Loader Control Valve. (Sheet 9 of 14)
TESTING/ADJUSTING RELIEF VALVES
45.
46.
47.
48.
49.
50.
51.
Hold adjustment screw when correct
pressure is obtained.
If correct
pressure cannot be obtained with
adjustment, replace or repair relief
valve as
necessary,
refer to
paragraph 12-5.
Using a 3/4” socket and torque
wrench, tighten jam nut (52) to 10
lb-ft .
Using an 11/16” socket and torque
wrench, install acorn nut (51) and
tighten to 10 lb-ft.
Stop engine.
Vent hydraulic system pressure, refer
to TM 10-3930-643-10.
Using a 10” adjustable wrench,
disconnect hydraulic pressure gage
from loader control valve (36) and
inlet valve assembly (44).
Using an 11/16” socket and socket
wrench handle, install new preformed
packing (50) and plug (49).
Go to sheet 10
12-21
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