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Delco-Remy
CS-130 and
CS-121 type
Alternator
Page 6
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1 2 3 4
5 6
BEARING REPLACEMENT
The drive end bearing is sealed on both
sides and requires no added lubrication.
The bearing inner race is a slip fit
over the shaft. A drive end frame
assembly is shown in Figure 9. Torque the shaft nut to 54-108 N M (4680 lb.-ft.).
The slip ring end bearing assembly is
covered in the next section.
REASSEMBLY
1. Discard bearing retainer ring, Figure
4.
2. Install new ring.
3. To install new bearing. push on outer
race until bearing bottoms in end frame.
This procedure is not yet completed, see
Step 12 after alternator is completely
assembled. 4.
Position regulator. rectifier bridge,
and brush holder on work bench flat
surface, solder or crimp connectors as
in original assembly. Hold brushes in holder with pin.
5. To dissipate heat and make electrical contact place Copper heat Transfer
grease,
part no.698-T on end frame casting
under rectifier bridge.
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6. Position
assembly in slip ring end frame,
assemble fasteners.
7. Assemble baffle, use punch to drive
pins down flush with baffle.
8. Seat stator securely against end frame,
solder three stator leads to rectifier
bridge terminals.
9. Install cover, use punch to drive pins
flush with cover.
10. Push on both inner and outer race of
slip ring end bearing to assemble end
frames together.
II. Assemble thru bolts. Remove brush
holder pin.
12. With alternator assembled, push on
both inner and outer race so slip ring
end bearing seats
GENERATOR BENCH CHECK
To check the alternator in a test stand,
proceed as follows:
1. Make connections as shown in Figure
11, except leave the carbon pile disconnected. The ground
polarity of alternator and battery must
be the same.
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The battery must be
fully charged. Use a resistor of any
value between 35 ohm, 5 watt, and 500 ohm.
1/2 watt between battery and "L"
terminal. This procedure applies to both
circuits, Figures 3 and 3A.
2. Slowly increase alternator speed and
observe voltage.
3. If the voltage is uncontrolled and increases
above 16.0 volts, the rotor field is
shorted or grounded or the regulator is
defective, or both. A defective rotor
field coil can cause the regulator to
become defective. NOTICE: The battery
must be fully charged when making this
test.
4. If voltage is below 16.0 volts, increase
speed and adjust carbon pile to obtain
maximum amperes output. Maintain voltage
above 13.0 volts.
5. If output is within 15 amperes of rated
output. generator is good.
6. If output is not within 15 amperes of
rated output, alternator is defective and requires repair or belt is
slipping.
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