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Page Title:
TRAILER BRAKES GRAB WHEN APPLIED. (Cont) |
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 TM 9-2330-385-14
10. TRAILER BRAKES GRAB WHEN APPLIED (CONT).
3.
KNOWN INFO
TEST OPTIONS
Truck air system OK.
Visual inspection.
Are brake drums free of
Load sensing valve OK.
contaminants and/or
Relay valve OK.
REASON FOR QUESTION
damage?
POSSIBLE PROBLEMS
If brake drums are damaged or
contaminated with petrol based
Brake drums faulty.
substance, brakes will grab.
Brake components faulty.
Replace brake drum
NO
Verify repair, go to
Step 5 of this Fault.
YES
4.
KNOWN INFO
TEST OPTIONS
Truck air system OK.
Visual inspection.
Are brake shoes and
Load sensing valve OK.
components free of
Relay valve OK.
REASON FOR QUESTION
contaminants and/or
Brake drums OK.
damage?
Brake shoes and components
POSSIBLE PROBLEMS
contaminated with petrol based
substance will cause brakes to
Brake components faulty.
grab.
Replace brake shoes
and/or components
NO
Verify repair, go to
Step 5 of this Fault.
YES
4-312
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