TM 55-2210-223-34
TO 45A2-2-14-22
Table 3-1. INTERMEDIATE DIRECT SUPPORT AND INTERMEDIATE GENERAL SUPPORT
TROUBLESHOOTING (continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
56. TRACTION MOTOR BEARING FAILS. (cont)
Step 3.
Check for improper traction motor alinement.
Aline traction motor (para 3-62).
Step 4.
Check for improper installation of bearings.
Remove traction motor for repair (para 3-62).
57. TRACTION MOTOR BRUSHES ARE BROKEN.
Step 1.
Check for rough commutator, burned spots, flat spots, or high bars.
Resurface commutator (para 3-62).
Step 2.
Check for low brush spring tension.
Adjust spring tension (TM 55-2210-223-12).
Step 3.
Check for motor vibration caused by weak or broken nose suspension springs.
Replace springs (para 3-62).
Step 4.
Check for motor vibration caused by defective bearings.
Replace bearings (para 3-62).
Step 5.
Check for out-of-round commutator.
Resurface commutator (para 3-62).
Step 6.
Check for high bar on commutator.
Repair or replace commutator (para 3-62).
Step 7.
Check for dirty or sticking brushes.
Clean brush holder and blow out generator.
3-28
