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
37. EXCITER-AUXILIARY GENERATOR BRUSHES ARE BROKEN. (cont.)
Step 3.
Check for vibration caused by defective bearing.
Replace bearings (para 3-35).
Step 4.
Check for out-of-round commutator.
Resurface commutator (para 3-35).
Step 5.
Check for high bar on commutator.
Repair or replace commutator (para 3-35).
Step 6.
Check for dirty or sticking brushes.
Clean brush holders and blow out generator.
38. THERE IS EXCITER-AUXILIARY GENERATOR FLASHOVER.
Step 1.
With engine stopped, check to see if insulating (mica) spaces between commutator
segments contain dirt or foreign particles.
Undercut or clean out spaces to 3/64 inch (1.2 mm) (para 3-35).
Step 2.
Check to see if brushes are broken or worn beyond condemning limits.
Replace brushes (TM 55-2210-223-12).
Step 3.
Check for low brush spring tension or sticking brushes.
Adjust spring tension and clean brush holders (1M 55-2210-223-12).
Step 4.
Check to see if commutator bars have slagged over.
Undercut mica bars (para 3-35).
Step 5.
Check for high bar on commutator.
Repair or replace commutator (para 3-35).
Step 6.
Check for exiter-auxiliary broken insulators, insulation, or brush shunt wires.
Remove generator for repair (para 3-35).
3-20
