TM 9-2330-267-14&P
Table 4-2. Organizational Troubleshooting (Con’t).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 5.
Perform pushrod travel test (para 4-39).
Notify direct support maintenance if problem is not corrected.
Step 6.
Check to ensure that towing vehicle air valves are turned on.
Turn on towing vehicle air valves as directed in towing vehicle technical manual.
10. SERVICE BRAKES ARE LOCKED.
Step 1.
Check to see if intervehicular air hoses are properly connected.
Connect intervehicular air hoses to towing vehicle correctly (para 2-10).
Step 2.
Check to ensure that towing vehicle air valves are turned on
Turn on towing vehicle air valves as directed in towing vehicle technical manual.
Step 3.
Check to ensure that handbrakes are released.
Release handbrakes.
Step 4.
Check for damaged or missing preformed packing in intervehicular air coupling.
Replace damaged or missing preformed packing (para 4-37).
Step 5.
Check for air leaks in intervehicular air hoses.
Tighten loose fittings or connectors.
NOTE
Remove parts as needed to gain access to brakeshoe return springs (para 4-32).
Step 6.
Check for weak or broken brakeshoe return springs.
Replace weak or broken brakeshoe return springs (para 4-32).
11. SERVICE BRAKES ARE DRAGGING, UNEVEN, OR GRABBING (ONE OR BOTH BRAKEDRUMS RUNNING
HOT).
Step 1.
Ensure that service brakes are not out of adjustment or adjusted too tight.
Adjust service brakes (para 4-32).
NOTE
Remove parts needed to gain access to brakedrums, wheel bearings, and brakeshoe
linings (para 4-32).
Step 2.
Check for cracked, scored, or deformed brakedrums.
Replace brakedrum (para 4-45). Notify direct support maintenance to repair brakedrums as
needed.
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