 |
|||
|
|
|||
|
Page Title:
Table 2-1. Troubleshooting - CONT |
|
||
| ||||||||||
|
|
 Corrective Action
Malfunction
Probable Cause
e. Remove by draining and flushing
e. Pieces of broken hose in system.
out the system.
a. Do not lift more than 6000 pound
Unable to lift or tilt load.
a. Load too heavy.
Ioad.
b. Check tank for proper oil level and
c. Insufficient or no oil in hydraulic
pIugged suction line.
system.
c. Tighten connections.
c. Air leak at suction line.
d. Damaged or worn hydraulic
pump.
e. Relief valve binding open.
f. Repair.
f. Broken lift chain.
g. Check flow of oil from pump
g. Obstruction in hydraulic lines.
through hydraulic system.
h. Check for binding or inoperative
h. Damaged lift cylinder.
plunger (para 5-9 or 5-10).
i. Inspect for internal leakage or
i. Control valve inoperative.
damaged parts and repair (para
j. Incorrect relief valve setting.
a. Inspect governor controls and
a. Engine speed governed too low.
18. Lift and tilt too slow.
adjustment (para 3-3).
b. Inspect for worn or damaged parts
b. Internal leakage at pump.
c. Leakage at cylinder packing.
and 3-10).
d. Tighten all connections.
d. Air leaks in system.
e. Check masts. carriage or tilt
e. Misalignment.
linkage for cause of binding.
f. Check for worn or damaged parts.
f. Faulty relief Valve.
Repair or replace. Check relief
valve setting (para 5-6).
a. Internal leakage in cylinders.
19. Mast tilts or carriage slips
and 5-10).
downward while load is elevated.
b. Oil leak at packing glands.
and 5-10).
c. Leak in control valve.
c. Check for worn or damaged
plungers (para 5-6).
d. Leaks in oil lines.
d. Tighten all connections or replace
damaged lines.
a. Insufficient or no oil.
e. (Check tank for proper oil level or
20. Noisy hydraulic pump.
restricted suction line.
b. Air leaks.
b. Tighten intake connections.
c. Use hydraulic oil with antifoaming
c. Oil bubbles in intake oil.
characteristics.
d. Realine.
d. Coupling misalignment.
e. Tighten.
e. Pump head loose.
a. Check setting for 1500 to 1700 psi
a. Relief valve set too low.
21. Hydraulic oil overheating.
b. Repair or replace pump (para
b. Internal oil leakage in hydraulic
5-5).
pump.
c. Pump too tight after overhaul.
d. Check and clean lines.
d. Restricted lines.
a. Broken axle shaft.
22. Wheels will not turn.
b. Replace axle shaft or bull gear
b. Teeth broken from axle shaft or
bull gear.
(para 4-6 and 4-15).
c. Broken teeth on ring pear or
pinion.
a. Excessive wear at ring gear and
a.
Adjust, if possible, or replace
23. Axle noise on drive or coast.
pinion.
differential case.
a.
Replace
worn parts (para 4-6).
24. Continous axle noise.
b.
Replace
tires (4-16).
b. Uneven tire wear.
c.
Replace
bearings (para 4-6).
c. W orn or damaged bearing.
a.
Replace
axle shaft (para 4-6).
d. W orn splines on axle shaft.
25. Excessive backlash on drive unit.
2-4
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals