Alternator-Removal And Installation; Alternator Brushes-Replacement - Jeep cherokee 1989 Owner's Manual

17.2 To remove the alternator, detach the electrical connectors
(arrows) from below,
. .
.
and remove the alternator pivot bolt (arrow) from below
tab grounded any longer than necessary to obtain a voltmeter reading.
If the alternator is charging, i t is running unregulated during the test.
This condition may overload the electrical system and cause damage
to the components.
6 The reading on the voltmeter should be 15 volts or higher with the
tab in the test hole grounded.
7 If the voltmeter indicates low battery voltage, the alternator is
faulty and should be replaced with a new one (see Section 17).
8 If the voltage reading is 15 volts or higher and a no charge condi-
tion is present, the regulator or field circuit is the problem. Remove the
alternator (see Section 17) and have it checked further by an auto elec-
tric shop.
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17 Alternator removal and installation
Refer to illustrations 17.2, 17.3a and 17.3b
1 Detach the cable from the negative terminal of the battery.
2 Detach the electrical connectors from the alternator (see illustra-
tion).
3 Loosen the alternator adjustment and pivot bolts and detach the
drivebelt (see illustrations).
4
Remove the adjustment and pivot bolts and separate the alterna-
tor from the engine.
5 If you are replacing the alternator, take the old one with you when
purchasing a replacement unit. Make sure the newlrebuilt unit looks
identical to the old alternator. Look at the terminals
the same in number, size and location as the terminals on the old alter-
The Motor Manual Guy
Chapter 5 Engine electrical systems
. .
.
18.2 Mark the drive end frame and rectifier end frame assemblies
nator. Finally, look at the identification numbers
into the housing or printed on a tag attached to the housing. Make
sure the numbers are the same on both alternators.
6
you may have to switch the pulley from the old unit to the newhebuilt
one. When buying an alternator, find out the shop's policy regarding
pulleys
7
8
Chapter 1).
9
nator (see Section 16).
18
Refer to illustrations 18.2, 18.3a, 18.3b, 18.4, 18.5, 18.6, 18.7and 18.10
Note: The following procedure applies only to SI type alternators. CS
types have riveted housings and cannot be disassembled.
1
2
the alternator to facilitate reassembly (see illustration).
3
frames together, then separate the drive end frame from the rectifier
end frame (see illustrations).
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they should be 4
separate the stator from the end frame (see illustration).
. . .
loosen the alternator adjustment bolt (arrow).
with a scribe or paint before separating the two halves
Many newhebuilt alternators DO NOT have a pulley installed, so
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some shops will perform this service free of charge.
Installation is the reverse of removal.
After the alternator is installed, adjust the drivebelt tension (see
Check the charging voltage to verify proper operation of the alter-
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Alternator brushes replacement
Remove the alternator from the vehicle (Section 15).
Scribe or paint marks on the front and rear end frame housings of
Remove the four through-bolts holding the front and rear end
Remove the nuts holding the stator to the rear end frame and
they will be stamped