GMC T Series 1994 Repair Manual page 605

250. Voltmeter
251. Ammeter
256. Battery
257. Carbon Pile
A. Connect Resistor to " L" Terminal
Figure 3— Connections for Generator Output Test
DRIVE END FRAME
E3
Remove or Disconnect (Figures 4, 5, and 6)
Tool Required:
J 28509-A Bearing Remover
• Scribe a mark to help locate the frame end parts in
the same position during assembly.
1. Four through bolts (28).
2. Rotor and drive end frame assembly from the slip
ring end (SRE) frame assembly.
N O T IC E : O n m o d e ls w ith a s lip r in g e n d b a ll
b e a r i n g o n th e r o t o r s h a ft, th is b e a r in g m u s t
b e r e p l a c e d w ith a n e w b e a r in g a n y t im e th e
tw o h a l v e s o f th e g e n e r a t o r a r e s e p a r a t e d . I f
n o t r e p la c e d , t h e b e a r in g m a y b in d a n d f a il
d u e t o d is t o r t io n o f it s o u t e r to le r a n c e r in g s .
T h is d o e s n o t a p p ly to r o lle r - t y p e s lip r in g
e n d f r a m e b e a r in g s .
3. Slip ring end bearing (106) from the rotor.
• If you have a slip ring end bearing on the shaft,
use J 28509-A (figure 5).
• If you have a roller bearing in the slip ring end
frame, press it out.
• Place the rotor in a vise and tighten only
enough to permit removal of the pulley nut
F7081
DISASSEMBLY
N O T IC E :
v is e is o v e r tig h te n e d .
4. Pulley nut (1) and the washer from the shaft.
5. Pulley (229), collar (306), fan (230), and outside
collar from the shaft.
6. Drive end frame (216) and the inside collar (116)
from the rotor shaft.
7. Three screws and the retainer (128) from the end
drive frame (figure 6).
• Press the bearing from the drive end frame.
Remove or Disconnect (Figures 4, 7 and 8)
1. Three stator lead nuts (1).
2. Stator (220).
3. One screw (30) from the brush holder and two
insulated screws (35) from the regulator connector.
4. Brush holder (131), regulator (226), and connector
(92) from the end frame (figure 7).
5. BAT terminal nut (1) from the insulated heat sink
(figure 8).
6. Two screws and washers (30) from the grounded
heat sink.
7. Capacitor (228) and rectifier bridge (227) from the
frame (figure 8).
8. " BAT" terminal from the outside of the frame.
T h e r o t o r m a y b e d is t o r t e d i f th e
SLIP RING END FRAME