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Page Title:
TABLE 6-2. TROUBLESHOOTING - continued |
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 TABLE 6-2. TROUBLESHOOTING (Cont'd)
STEP
PROCEDURE
CORRECTIVE ACTION
Electrical (Cont'd)
11.Spotlight does not
(2) Check continuity
light. (Cont'd)
across light switch.
Replace if defective.
12. Tail and stoplight out.
a.
Taillight circuit.
a. Check following:
(1) Check lights. Replace
if defective.
(2) Continuity through
brake switch with
brakes depressed.
Replace if defective.
(3) Continuity through
light switch. Replace
if defective.
(4) Resistor circuit 3RES.
Replace if defective.
Brakes
1. Brakes dragging.
a.
Master cylinder
a. Overhaul brake master
compensating port
cylinder (para 6-139).
plugged.
2. Brake pedal goes to
a.
High rate of fluid
a. Repair wheel cylinder
floor, no resistance.
leakage at wheel
cylinder.
b.
High rate of fluid
b. Repair brake master
leakage from master
cylinder (para 6-139).
cylinder.
3. Brake pedal under
a.
Scored master cylinder
a. Repair brake master
force gradually goes
barrel or defective
cylinder (para 6-139).
to floor.
cup in master cylinder.
b.
Leakage of fluid from
b. Repair wheel cylinder
wheel cylinder.
c.
Leakage of fluid from
c. Repair brake master
master cylinder.
cylinder (para 6-139).
4. Heavy braking action.
a.
Brake backing plate
a. Tighten or replace
loose on axle housing.
brake backing plate
(paras. 6-133 through
5. Truck pulls to one
a.
Brake backing plate
a. Tighten or replace
side.
loose on axle housing.
brake backing plate
(paras. 6-133 through
6-10
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