TM 5-5420-234-14&P
5-2. DIRECT SUPPORT TROUBLESHOOTING (continued).
6.
MAIN FRAME, HOOK ARM, AND WINCH DO NOT OPERATE OR OPERATE
SLOWLY (continued).
3.
TEST OPTIONS
KNOWN INFO
Relief Valve Test.
Free flow valve OK.
Are 3,100 psi measured
at the TPP test port on
POSSIBLE PROBLEMS
the main manifold
REASON FOR QUESTION
block body assembly
HEMTT hydraulic system
after replacement of
If replacing the relief valve
faulty.
the relief valve?
fails to correct the problem,
Relief valve faulty.
the source of the problem
is likely in the HEMTT
hydraulic system: high
pressure filter, pump, etc.
Refer to TM 9-2320-
279-34-1 for HEMTT
NO
hydraulic system
troubleshooting.
Fault corrected.
YES
5-42
