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Page Title:
TABLE 5-1. SERVICE TROUBLES AND REMEDIES (Cont'd) |
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 TM 10-3930-623-12
TABLE 5-1. SERVICE TROUBLES AND REMEDIES (Cont'd)
Trouble
Probable Cause
Remedy
UPRIGHT ASSEMBLY HYDRAULIC SYSTEM
NO MOVEMENT OF
UPRIGHT ASSEMBLY
Excessive fluid leakage
Correct and replenish fluid
supply
Truck engine malfunction
Refer to engine troubleshooting
EXCESSIVE "DRIFT"
OF HOIST AND TILT
CYLINDERS
Leakage at hydraulic lines and
Inspect and correct as necessary
fittings
Leakage at hydraulic lines and
Inspect and correct as necessary
HOIST CYLINDER
fittings
WILL NOT MAIN-
TAIN RAISED PO-
SITION WITH LOAD
Leakage in lines and fittings
Repair, replace or tighten loose
EXCESSIVE HY-
fittings and lines
DRAULIC FLUID
CONSUMPTION
Excessive fluid leakage
Check fittings, lines and cylinders
WILL NOT LIFT
FULL RATED
Low fluid level
Add sufficient fluid of proper type
LOAD
Incorrect pressure relief
Correct pressure
BRAKES
Linings worn
Replace brake shoes
EXCESSIVE PEDAL
TRAVEL
Fluid low in master cylinder
Replenish fluid and check for leaks
Air in system
Bleed hydraulic system
Pedals improperly adjusted
Adjust linkage
Oil on linings
Replace lining
WEAK BRAKING
ACTION
Incorrect lining
Replace lining
Brake lining greased soaked
Replace lining
HARSH BRAKING
ACTION
Brake backing plate loose
Tighten or replace
Hydraulic fluid congealed
Drain, flush and replace with
BRAKE RELEASES
proper brake fluid
SLOWLY
Master cylinder improperly adjusted
Drain, clean or adjust as necessary
5-23
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