TM 5-5420-234-14&P
5-2. DIRECT SUPPORT TROUBLESHOOTING (continued).
5.
LHS CREEPS UNDER LOAD (continued).
5.
TEST OPTIONS
KNOWN INFO
Visual inspection.
Hook arm OK.
Does the main
Main frame OK in unload
frame creep in the
REASON FOR QUESTION
direction.
load direction?
The transit valves in port CB
POSSIBLE PROBLEMS
of the main frame manifolds
relieve hydraulic pressure on
Main frame manifold
the front side of the hydraulic
faulty.
cylinder piston in the transit
mode. The counterbalance
valves in port CB of the
manifolds close and prevent
further hydraulic cylinder
retraction when no system
pressure is present. If the
main frame creeps in the load
direction, one or both of
these valves is stuck open.
Review the
questions in this
NO
fault, beginning with
Step 1.
Repair main frame
YES
manifold (para 5-
5-36
