GMC 1976 ZEO 6083 Maintenance Manual page 712

Figure 59-Removing Solenoid
Figure 60-Removing Yoke
Figure 61-Removing Armature
1 . Loosen the nut that attaches the solenoid mo-
tor terminal to the field coil connector lead and take
off the connector lead (figure 58).
2 . Loosen the retaining screws and remove the
solenoid from the front bracket. Simultaneouly, the
fiber washers, the return spring and the solenoid
plunger will be removed (figure 59).
3. Unscrew the through bolts and the screws at-
taching the brush holder assembly to the rear
ONAN MOTOR GENERATOR
24C- 3 5
Figure 62-Separating Yoke and Rear Bracket
bracket, so the rear bracket will be removed from the
yoke .
bly .
4. Remove the yoke with the brush holder assem-
5 . Removing the brushes from the brush holders
permit separation of brush holder assembly from the
field coil .
6. Remove the armature from the front bracket.
Simultaneously, the shift lever, the lever spring and
the spring holder will be removed.
7. To remove the overrunning clutch, put a metal
cylinder of suitable size over the end of armature
shaft so it rests on the stop ring . Tap cylinder lightly
with hammer, the stop ring sliding toward armature
and off ring . Remove the ring from groove in shaft
and then slide the overrunning clutch and the stop
ring from the armature shaft.
CAUTION : Do not immerse parts in cleaning
solvent. Immersing the field coil, yoke as-
sembly, armature and solenoid will damage
the insulation . Wipe these parts with a cloth
only. Do not immerse the
overrunning
clutch
in cleaning
solvent . The clutch is
prelubricated at the factory, andsolvent will
wash lube from clutch . Wash all other parts
in solvent and dry the parts.
INSPECTION OF PARTS
GROUNDED ARMATURE: Use a 120 volt
test lamp set for testing armature for grounds as
shown in Figure 64 . If lamp lights when one probe
of test lamp is touched to commutator with other
probe to the core, the armature is grounded and must
be replaced .
SHORTED ARMATURE : (figure 65) Use a
growler tester for testing armature for a short circuit.