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
48. MAIN GENERATOR BRUSHES ARE BROKEN. (cont)
Step 3.
Check for vibration caused by defective bearing.
Replace bearings (para 3-36).
Step 4.
Check for out-of-round commutator.
Resurface commutator (para 3-36).
Step 5.
Check for high bar on commutator.
Repair or replace commutator (para 3-36).
49. THERE IS MAIN GENERATOR FLASHOVER.
Step 1.
With generator running, check to see if commutator is eccentric.
Aline main generator (para 3-36).
Step 2.
With engine stopped, check to see if insulating (mica) spacers between commutator
segments contain dirt or foreign particles.
Undercut or clean out spacers to 3/64 inch (1.2 mm) (para 3-36).
Step 3.
Check to see if brushes are broken or worn beyond condemning limits.
Replace brushes (TM 55-2210-223-12).
Step 4.
Check for low brush spring tension or sticking brushes.
Adjust spring tension and clean brush holders and brushes (TM 55-2210-223-12).
Step 5.
Check to see if commutator bars have slagged over.
Undercut mica bars (para 3-36).
Step 6.
Check for high bar on commutator.
Repair or replace commutator (para 3-36).
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