TM 9-2330-381-14
4-13. TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
BRAKES - CONT
37.
NO BRAKES OR WEAK BRAKES - CONT
Step 3.
Check brakes for improper adjustment.
Perform service brake adjustment (para. 4-15).
Step 4.
Check for grease on brake linings.
If grease is present on brake lining, replace inner bearing oil seal and replace brake shoes
(para. 4-43) as required.
Step 5.
Check for worn brake linings.
If brake linings are worn, replace brake shoes (para. 4-43).
Step 6.
Check for relay valve operation by observing air brake chamber.
a. If left and right bogies (#1) air brake chambers do not operate, replace relay valve #1
b. If left and right bogies (#2) air brake chambers do not operate, replace relay valve #2
c.
If left and right bogies (#3) air brake chambers do not operate, replace relay valve #3
d. If left and right bogies (#4) air brake chambers do not operate, replace relay valve #4
e. If left and right bogies (#5) air brake chambers do not operate, replace relay valve #5
f.
If a single air brake chamber does not operate properly, remove and replace defective chamber
4-54
