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TM 5-2420-222-34
7-1.
ENGINE AC GENERATOR REPAIR (Con’t).
NOTE
Loader backhoes with serial numbers 235786-235999 have 55-amp AC generators.
Loader backhoes with serial numbers 319995-342573 have 35-amp AC generators.
Both AC generators are maintained the same way. 35-amp AC generator for loader
backhoes with serial numbers 319995-342573 Is shown, except as noted.
a.
DISASSEMBLY
1.
Remove two screws (1), cover (2), and brush assembly (3) from rear electrical end bell (4).
2.
Remove four bolts (7) and square nuts (6) from front and rear electrical end bells (5 and 4).
CAUTION
Do not allow tools to touch generator stator. Contact could damage protective coating.
3.
Using machinist’s scriber, match-mark front and rear electrical end bells (5 and 4).
4
Position front electrical end bell (5) in vise with caps. Pry rear electrical end bell (4) and assembled parts off front
electrical end bell and rotor (15).
5.
Remove two nuts (8) and washer insulators (9) from rear electrical end bell (4) and two terminal studs (11).
Remove plate assembly (21).
6.
Remove two nuts (10) from rear electrical end bell (4) and two terminal studs (18). Push two semiconductor
devices (13 and 17) with assembled parts out of rear electrical end bell.
7.
Remove two special spacers (20) and washer insulators (19) from two semiconductor devices (13 and 17).
TA701332
7-2
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