Drive End Frame Bearing; Stator - Pontiac Grand Prix Service Manual

Fig. 6E-12 Proper Installation of Drive End Frame
Bearing
3. The winding is checked for short circuits by
connecting a battery and ammeter in series with two
slip rings. The field current at 12 volts and 80°F should
be between 2.2
-
2.6 amperes on standard regulator
cars and 4.0
-
4.5 on cars equipped with 62 amp
alternators. Any ammeter reading above these values
indicates shorted windings.
4. Rotor assemblies which fail above test should be
replaced.
The rotor may be cleaned and inspected as follows:
a. If magnetic poles or rotor need cleaning, they may
be cleaned by brushing with oleum spirits.
CA UTZON: Do not clean with degreasing solvent.
INSULATING
WASHERS
BRUSH HOLDER
ASSEMBLY VOLTAGE
EGULATOR
ASSEMBLY
CAPACITOR
D I O D E TRIO
RECTIFIER BRIDGE
NUTS
Fig. 6E-13 Slip Ring End Frame-C.S.I. Generator
b. Inspect slip rings for dirt and roughness. These may
be cleaned with solvent, if necessary. They may also be
cleaned and finished with 400 grain or finer polishing
cloth. Do not use sandpaper. Spin rotor in lathe or
otherwise spin rotor, and hold polishing cloth against
rings until they are clean.
CAUTION: The rotor must be rotated in order that slip
rings will be cleaned evenly. Cleaning slip rings by hand,
without spinning rotor, may result in flat spots on slip
rings, causing brush noise.
Slip rings which are rough or out of round should be
uued in lathe to .002" maximum indicator reading.
Remove only enough material to make rings smooth
and round. Finish with 400 grain or finer polishing
cloth and blow away all dust.
DRNE END FRAME BEARING
1. Remove three screws from retainer plate and
'
remove retainer plate inner collar and gasket.
2. Press out bearing and oil slinger.
3. The bearings in generator are permanently lubri-
cated and require no lubrication during life of bearing.
If a dry bearing is encountered, d a not attempt to
lubricate, as an improper lubricant or excessive
amount of lubricant may bum bearing, or be thrown
off and contaminate inside of generator. Replace dry,
worn or rough bearings with new bearings, which are
prepacked with proper amount and type of lubricant.
4. To install, press in bearing and grease slinger with
tube or collar that just fits over outer race. Install
bearing and slinger as shown in Fig. 6E-12.
5. Install retainer plate gasket and inner collar with
threc screws. It is recommended that new retainer
plate be installed if felt seal is hardened or excessively
worn.
STATOR
If stator is to be checked and/or replace:
1. Remove 3 stator lead attaching nuts and washers
(Figs. 6E- 13 or 6E- 14).
2. Separate stator from end frame. The
fit
between
stator frame and end frame is not tight, and two can
be separated easily.
3. The stator windings may be checked with 110-volt
test lamp or ohmmeter as follows:
a. To check for grounded windings, connect lamp or
ohmmeter from any stator lead to frame. If lamp lights
or ohmmeter reading is low the stator is grounded (see
Fig. 6E- 15).
b. To test for opens, successively connect 1 10-volt test