Chevy Caprice Classic
Chevy S-10

How do you replace the alternator on a 1981 Chevy Caprice Classic?


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2015-07-15 21:01:53
2015-07-15 21:01:53

Tools Required:

5/16" box wrench 3/8", 7/16" or 10mm wrench 9/16" socket 1/2" socket 3/8" or 1/2" ratchet 3" extension that fits the socket and ratchet Pry bar.

Removal Procedure:

1) use 5/16" box wrench to disconnect the ground (black) cable from the battery. 2) if accessible, use the 3/8", 7/16" or 10mm wrench to disconnect the wires from the back of the alternator 3) use the 1/2" and 9/16" sockets to remove the three bolts that hold the alternator in place. Remove both of the clamping bolts and the fan belt before removing the pivot bolt. 4) remove the alternator from the mounting brackets 5) unplug the connector from the side of the alternator. This connector usually has a latch that is released by pinching a tab on the connector.

Installation Procedure:

1) position the alternator in the mounting brackets and install the pivot bolt (finger tight) 2) reattach the electrical connector and wires. The 3/8", 7/16" or 10mm nut should be tightened at this time. However, be careful to not over tighten this nut. 3) route the fan belt over the alternator pulley. 4) reinstall the bolts that lock the alternator in the mounting brackets 5) use the pry bar to remove all slack from the fan belt 6) tighten all bolts on the alternator 7) reconnect the battery cable.


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