Generator Disassembly and Assembly: Disassembly

Remove the generator. Refer to "GENERATOR REMOVAL AND INSTALLATION :".
Mark a match line that cannot easily be removed on the end frame to make assembly easier.
Pry off the plastic cover to expose the stator connections.

Fig 1: Identifying Generator Assy
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CAUTION: If the stator connections are not welded, melt the lead. Avoid excessive heating, as it can damage the diodes in the rectifier bridge.
Remove the stator connections from the rectifier bridge terminals by cutting the wires.

Fig 2: Removing Stator Connections From Rectifier Bridge Terminals
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Pry off the baffle.
Remove the rectifier/regulator/brush holder assembly screws.
Remove the brush holder assembly and the regulator.

Fig 3: Removing Rectifier/Regulator/Brush Holder Assembly Screws
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CAUTION: If the brush can be reused, reassemble the brush to the holder with the retaining pin, after cleaning the brush with a soft, clean cloth.
Test the rectifier bridge by connecting the ohmmeter terminals to the bridge and the heat sink.

Fig 4: Testing Rectifier Bridge By Connecting Ohmmeter Terminals To Bridge And Heat Sink
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Retest by connecting the ohmmeter terminals in reverse.

Fig 5: Retesting Rectifier Bridge By Connecting Ohmmeter Terminals To In Reverse
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Replace the rectifier bridge, if each reading is the same.
Test the remaining two diodes after the above procedure.
NOTE: Some kinds of digital ohmmeters are not suited for the test of the bridge diode. In this case, consult the manufacturer regarding the test capacity.
Test the diodes by connecting the ohmmeter terminals to the bridge terminal and the base plate. If the reading is the same, the rectifier bridge should be replaced.

Fig 6: Testing Diodes By Connecting Ohmmeter Terminals To Bridge Terminal And Base Plate
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Remove the generator through - bolts.

Fig 7: Identifying Generator
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CAUTION: The fastening torque of this nut is 81 N.m (60 lb-ft) and may not normally be unfastened using hand strength.
Move to the drive end of the generator and remove the drive end bearing nut.
Remove the pulley and the collars.

Fig 8: Removing Drive End Bearing Nut
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Test the rotor for an open circuit using the ohmmeter with the drive end frame assembled. The reading should be sufficiently high, or the rotor must be replaced.

Fig 9: Testing Rotor For Open Circuit
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Test the rotor for open and short circuits. The reading should be 1.7 to 2.3 ohms, or the rotor should be replaced.

Fig 10: Testing Rotor For Open And Short Circuits
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Remove the drive end frame from the shaft.
For vehicles with an internal generator fan, remove the drive end frame and the fan.

Fig 11: Removing Drive End Frame From Shaft
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Remove the rotor assembly.

Fig 12: Removing Rotor Assembly
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Remove the stator.

Fig 13: Removing Stator
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Test the stator for an open circuit using the ohmmeter.

Fig 14: Testing Stator For Open Circuit
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Remove the ring in the slip ring end frame.

Fig 15: Removing Ring
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