How to Install an Alternator Pulley | Delco Remy Tech Tip

Proper installation of the pulley on a Delco Remy 24SI and 28SI ensures that the product will perform as promised. Unfortunately, damaged products are returned to Remy as a result of improper pulley installation. This Tech Tip explains how to install the pulley properly.
-- delcoremy.com -- Delco Remy starters and alternators from PHINIA are the preferred choice for medium and heavy-duty truck, bus and off-highway applications worldwide. Learn more at delcoremy.com. DELCO REMY is a registered trademark of General Motors LLC, licensed to PHINIA Technologies Inc. -- delcoremy.com -- [How to] Step 1: Set alternator in horizontal position on flat surface. Step 2: Remove pulley nut and cardboard spacer, and discard cardboard spacer. Step 3: Make sure the spacer washer is placed against the bearing and slinger is placed second against spacer washer. Step 4: Slide pulley in place by hand. Step 5: Use pulley nut to hand-tighten against pulley. Step 6: There are two different methods to tighten the pulley nut. Using a pass through socket 15/16, secure pulley nut. Using a torque wrench with a 5/16 hex head socket, tighten rotor shaft to 95 - 108 N-m or 70 - 80 lb. ft. OR Hold the shaft by placing a 5/16 hex wrench in the hexagonal hole at the end of the rotor shaft. Using an open ended 15/16 wrench, tighten pulley nut to 95 - 108 N-m or 70 - 80 lb. ft. -- delcoremy.com -- Safety Reminder The various electrical systems within a vehicle are highly charged and may include corrosive, poisonous, and hazardous materials. To remain safe, you must: - Know where the nearest eye wash station is located - Always wear eye protection - Remove any metallic items that could create an electrical charge including watches and jewelry - Never smoke near batteries - Never use batteries as a tool rest - Dispose of batteries properly when necessary - Follow usual safety precautions near rotating machinery