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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
BRAKES (Cont'd)
Retraction of brake shoes prevented
Clean, adjust or replace as
BRAKE RELEASES
by weak return springs or dirt
necessary
SLOWLY (Cont'd)
Brake linings grease or oil soaked
Replace brake linings and
TRUCK PULLS TO
correct source of grease or
ONE SIDE
oil leakage
Mineral base oil in brake system
Drain and flush system, replace
BRAKES DRAG
parts and service brake system
Linings grease soaked
Replace brake linings
STEERING
Steering gear out of adjustment
Readjust steering gear
DIFFICULT STEER-
ING OR WANDERING
Damaged drag link
Replace
Excessive leakage of fluid
Check for leaks, correct and fill
with proper fluid
Faulty operation of relief valves
Flush and refill system. If
FLUCTUATING
condition still exists, overhaul
PRESSURE
valve assembly
Slippage of pump drive, other pump
Check pump and pump drive gear
LOSS OF SYSTEM
malfunction
PRESSURE
Cramping of linkage
Replace unit and readjust pitman
CYLINDER PISTON
arm stops
ROD BINDING OR
STICKING
Loose mountings or linkage
Make certain all ball stud
CHATTER CONDI-
mounting and other linkage is
TIONS
Relief valve set too low
tight. Check pitman arm stops to
be certain the arm strikes the
Insufficient pump flow
stops slightly before the steering
knuckles contact the stops on the
axle. Set relief valve at least
150 psi higher than normal steering
requirements of the vehicle. Bleed
air from system. Insufficient pump
flow at idle speeds can be corrected
by increasing engine idle rpm
Air in system
Replace cylinder packings
UNSATISFACTORY
STEERING IN
Excessive wear in steering cylinder
Replace cylinder
EITHER DIRECTION
Incorrect system pressure
Reset pressure
5-24
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