TM 5-3895-370-14&P
Table 4-4. Unit Troubleshooting Procedures - CONT.
Malfunction
Test or inspection
Corrective action
BRAKE SYSTEM (CONT)
35.
TRAILER BRAKES GRAB WHEN APPLIED.
Step 1. Check air pressure on air hose to service brake chamber at relay valve.
If pressure is greater than 60 +5 psi (414 +34) when brakes are applied, replace air relay
valve (para 4-102).
If pressure is not greater than 60 +5 psi (414 +34) when brakes are applied, go to step 2.
Step 2. Inspect drum for damage and petrol based contaminants.
If drum is damaged or contaminated, clean or replace drum (para 4-108).
If drum is not damaged or contaminated, go to step 3.
Step 3. Inspect brake components for damage.
If brake components are damaged, replace damaged components (para 4-97).
If brake components are not damaged, fault not corrected. Notify supervisor.
36.
BRAKE DRUM OVERHEATS.
Step 1. Inspect slack adjuster operation and check adjustment.
If slack adjuster is damaged or not adjusted properly, notify DS maintenance.
If slack adjuster is not damaged and adjusted properly, go to step 2.
Step 2. Inspect brake components for damage.
If brake components are damaged, replace damaged components (para 4-97).
If brake components are not damaged, fault not corrected. Notify supervisor.
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