TM 9-2330-379-14&P
UNIT TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
11.
BRAKES DRAG
Step 1. Check brake shoe (1) adjustment.
Adjust brakes (page 4-119). If brakes are adjusted properly go to step 2.
Step 2. Check for weak or broken brake shoe return spring(s) (2) (page 4-82).
Replace defective brake shoe return spring(s) (2). If brake shoe return springs
are not defective go to step 3.
Step 3. Check that brake drum(s) (3) are out of round.
Replace defective brake drum(s) (3). If brake drums are not out of round, go to
step 4.
Step 4. If rear brakes, check if parking brake lever operates properly.
Replace if not operating properly (page 4-90).
Step 5. If rear brakes, check operation of spring brake unit (page 4-95).
If spring brake units are not operating properly with proper air pressure (and
cannot be released manually), replace spring brake chambers (page 4-95).
Step 6. Refer to page 4-79 for additional brake system maintenance information.
4-28