TM 9-2320-366-34-1
2-1102
KNOWN INFO
REASON FOR QUESTION
TEST OPTIONS
2.
Does boom remain in
position under load?
KNOWN INFO
TEST OPTIONS
REASON FOR QUESTION
YES
3.
Fault corrected.
NO
NO
YES
Holding Valve Check
Faulty holding valve.
Faulty telescopic cylinder.
Replace telescopic cylinder (para 16-5).
Does telescopic cylinder
work smoothly without
leaking?
Telescopic Cylinder
Load Test
Faulty telescopic cylinder
will cause boom to not
telescope in or out.
Faulty telescopic cylinder.
POSSIBLE PROBLEMS
POSSIBLE PROBLEMS
Hydraulic oil level OK.
Hydraulic hoses, tubes,
and fittings OK.
Control valve OK.
Tele out lockout valve OK.
Holding valve OK.
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 down.
Replace telescopic cylinder (para 16-5).
l7. M1084/M1086 MATERIAL HANDLING CRANE (MHC) BOOM DOES NOT TELESCOPE IN OR OUT (CONT)
