TEST OR INSPECTION
26. THERE IS A STEADY BLOW OF AIR AT APPLICATION VALVE EXHAUST WITH BRAKES APPLIED OR
Check to see if the blow of air stops while brakes are applying.
Repair or replace application valve supply seat (para 4-13).
27. THERE IS A STEADY BLOW OF AIR AT APPLICATION VALVE EXHAUST.
Check to see if air blows only when brakes are applied.
Repair or replace application valve seat or repair application piston O-ring (top or middle O-ring) (para 4-
28. BRAKES FAIL TO RELEASE.
Check to see if brakes do not release after emergency application.
Adjust safety valve setting to proper pressure.
AIR COMPRESSOR GOVERNOR
29. AIR COMPRESSOR GOVERNOR NOT LOADING AND UNLOADING.
With locomotive running, observe air pressure gages. Bleed air slowly from system to see if governor controls
the air compressor unloading and loading.
Remove air compressor governor and repair and test (para 3-45).
30. BATTERIES FAIL TO CHARGE.
Step 1. Check to see if water level in batteries is low.
Fill batteries to proper level and test (TM 55-2210-223-12).
Step 2. Check to see if connections on batteries are clean and secure.
Clean and tighten connections.
Step 3. Check to see if voltage regulator is working properly.
Test and repair voltage regulator (para 3-34).