LOCK 3590987 - Caterpillar

1. Remove belt guard (1).2. Loosen nut (2) on the adjusting rod. Loosen two lower mounting bolts (5).3. Rotate the alternator toward the engine to loosen the belt tension. Remove the belt from the alternator pulley.4. Put identification on wires (6) for assembly purposes and remove the wires.5. Remove bolt (3) and bolts (5). Remove alternator (4). The following steps are for the installation of the alternator.6. Put alternator (4) in position on the support and install bolts (5) and bolt (3).7. Connect wires (6) to the alternator.8. Put the belt in position on the alternator pulley.9. Use two nuts (2) to adjust the V-belt tension. Use a belt tension gauge, such as a Borroughs Tool Company, Part No. BT-33-95 or equivalent to check the belt tension. The correct gauge reading is 120 5 for a new belt, or 90 10 for a used belt.10. Tighten two nuts (2) and bolt (3) after the V-belt tension has been adjusted. Tighten bolts (5).11. Install guard assembly (1).