TM 9-2320-366-34-1
KNOWN INFO
POSSIBLE PROBLEMS
REASON FOR QUESTION
TEST OPTIONS
2.
Does boom remain in
position under load?
NO
YES
3.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
NO
YES
Faulty holding relief valve.
Faulty telescopic cylinder.
Holding Valve Check
Does telescopic cylinder
work smoothly without
leaking?
Faulty telescopic cylinder.
Telescopic Cylinder
Load Test
Faulty telescopic cylinder
will cause boom to not
telescope in or out.
Replace telescopic
cylinder (para 16-35).
Replace telescopic
cylinder (para 16-35).
Fault corrected.
Hydraulic oil level OK.
Hydraulic hoses, tubes,
and fittings OK.
Control valve OK.
Tele-out lockout valve OK.
Faulty holding valve will
cause telescopic cylinder
to drift.
Hydraulic oil level OK.
Hydraulic hoses, tubes,
and fittings OK.
Control valve OK.
Tele-out lockout valve OK.
Holding relief valve OK.
j7. M1089 MATERIAL HANDLING CRANE (MHC) BOOM DOES NOT TELESCOPE IN OR OUT (CONT)
(2-1059 Blank)/2-1060
