ALTERNATOR UNIT REPAIR AND ALTERNATOR

Disconnect grounded cable at battery before removing or attaching battery cable at alternator output terminal. Otherwise, a tool shorted to the battery cable at the output terminal can quickly heat enough to cause a skin burn or damage the tool or cable.

• If correct part number is not available, use only

equal size and strength. For alternator internal

fasteners, refer to Delco Remy Standard Hardware

Fasteners section in Service Parts Catalog.

• Fasteners that are NOT to be reused will be noted

in procedure.

• Fasteners requiring thread locking compound will

be noted in procedure.

• Use specified torque values when shown.

Using or replacing fasteners in any other manner could result in part or system

damage.

If diagnosis determines that alternator repair is needed, remove alternator from engine according to manufacturer’s instructions.

DISASSEMBLY AND BENCH CHECKS

TEST EQUIPMENT NEEDED:

• Multimeter

• Regulator Tester

ALTERNATOR

On some alternators on certain engine configurations, a 1.5μf capacitor has been installed to the output terminal and attached with a cover screw. Remove the capacitor (DRA 1985444) before performing "Regulatror Quick Check."

1. Remove screws and rectifier end plate to expose electronics compartment.

2. Inspect electronics compartment for contamination, for shorted or grounded wires, and for loose connections. If contamination is present, clean and dry compartment before proceeding. The protective coating on all electronic components is a good insulator and must be

scraped off to get a good contact for test equipment probes.