Chevrolet Chevelle 1977 Repair Manual page 232

6D-10
OHMMETER
INSULATING
WASHERS
CAPACITORi
RECTIFIER ATTACHING
BRIDGE
Fig. 6D -7C --B rush Lead C lip C hecks
R E P A IR S
Brush Holder and Regulator Replacement (fig.
6D-7C)
1. If not previously removed, remove the three stator
lead attaching nuts, the stator, diode trio brush lead screw
and diode trio from the end frame.
2. Remove the remaining two screws from the brush
holder and regulator and remove these units from the end
frame.
NOTE: The two screws retaining the brush clips have
insulating washers over the tops of the brush clips and
special insulating sleeves over the screw body above the
threads. If they are damaged or missing a ground will
result causing uncontrolled or no output.
3. Replace defective unit and reassemble using reverse
of removal procedures.
NOTE: The screw nearest regulator terminals does not
have an insulating washer, but may or may not have an
insulating sleeve.
Slip Ring Servicing
If the slip rings are dirty, they may be cleaned and
finished with 400 grain or finer polishing cloth. Spin the
rotor, and hold the polishing cloth against the slip rings until
they are clean.
The rotor m ust be rotated in order that
CAUTION:
the slip rings will be cleaned evenly. Cleaning the
slip rings by hand without spinning the rotor may
result in flat spots on the slip rings, causing brush
noise.
OVERHAUL MANUAL
RESISTOR
DIODE
TRIO
NUTS
Fig. 6 D -8 C -D riv e End B e a rin g Cross S e ctio n
Slip rings which are rough or out of round should be
trued in a lathe to .002 inch maximum indicator reading.
Remove only enough material to make the rings smooth and
round. Finish with 400 grain or finer polishing cloth and blow
away all dust.
Drive End Frame-Bearing Replacement/
Lubrication
1. The drive end frame bearing can be removed by
detaching the retainer plate bolts and separating retainer
plate and seal assembly from end frame, and then pressing
bearing out using suitable tube or pipe on outer race.
2. Refill bearing one-quarter full with Delco-Remy No.
1948791 grease or equivalent. Do not overfill.
3. Press bearing into end frame using tube or pipe as in
Step 1 with bearing and slinger assembled as shown in Figure
6D-8C.
4. Install retainer plate. Use new retainer plate if felt seal
is hardened or excessively worn.
N OTE: Stake retainer plate bolts to plate.
Slip Ring End Frame-Bearing Replacement
1. Replace the bearing if the grease supply is exhausted.
Make no attem pt to re-lubricate and reuse the bearing.
2. Press out from outside of housing, using suitable tool
over outer race of bearing.
3. To install, place a flat plate over the bearing and press
in from outside of housing until bearing is flush with the
outside of the end frame. Support inside of end frame around
bearing bore with a suitable tool to prevent distortion. Use
extreme care to avoid misalignment.
4. Install new seal whenever bearing is replaced. Lightly
coat the seal lip with oil and press seal into the end frame
with the seal lip toward the inside of the end frame.