 |
|||
|
|
|||
|
|
|||
| ||||||||||
|
|
 TM 10-3930-609-12
Corrective
action
Probable cause
Malfunction
a. Loss of oil supply due to broken
20.
Loss of motion during operation.
pump inlet, outlet or cylinder con-
necting hoses or tank return hose
b. Refer other causes to direct and
b. Other causes.
general support maintenance per-
sonnel.
a. Failure in hydraulic hoses.
21. Slow motion
b. Change oil.
b. Aerated oil supply (foam in tank).
c. See LO 10-3930-609-12 for proper
c. Oil too thin.
grade.
d. Fill reservoir (LO 10-3930-609-12).
d. Oil supply too low.
e. Cylinder misalinement.
f. Remove obstruction.
f. Mechanical obstruction of moving
parts.
g. Refer other causes to direct and
g. Other causes.
general support maintenance per-
sonnel.
a. Bleed hydraulic system by
a. Air in system.
22. Jerky motion.
operation.
b. Refer other causes to direct and
b. Other causes.
general support maintenance
personnel.
a. See LO 10-3930-609-12 for proper
a. Improper oil used in system.
23.
Speed or operation slow down
grade.
after usage.
b. Drain, flush out system, replace
b. Dirt or foreign matter in system.
with new oil.
c. Refer other causes to direct and
c. Other causes.
general support maintenance per-
sonnel.
a.
Bleed system by operation.
24. Noisy operation.
a.
Air in hydraulic system.
b.
Fill reservoir (LO 10-3930-609-12).
b.
Insufficient oil supply.
c.
Air leak in pump intake line.
c.
Tighten hose.
d.
Secure lines.
d.
Vibration of pump lines.
e.
Refer other causes to direct and
e.
Other causes.
general support maintenance per-
sonnel.
a. See LO 10-3930-609-12.
25. Oil heats up rapidly.
a. Bump slippage, oil too thin.
b. Operating pressure is close to relief
b. Check operation of truck.
valve pressure setting.
c. Change oil (LO 10-3930-609-12).
c. Dirty oil.
d. Refer other causes to direct and
d. Other causes.
general support maintenance
personnel.
26. Hoist cylinder packing leaks.
Refer malfunction to direct and general
support maintenance personnel.
27.
Hoist or tilt cylinder lowers or
a. Wrong packing.
tilts while truck stands idle.
b. W orn or soored seals, packing or
cylinders.
c. Failure in hydraulic hose.
c. Cheek, tighten or replace hose.
d. other causes.
d. Refer other causes to direct and
general support maintenance per-
sonnel.
28. Reservoir flows over.
a. Excess oil in reservoir.
a. Check oil level with forks in lowered
position and tilted back.
b. Refer other causes to direct and
general support maintenance per-
sonnel.
3-7
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals