WASHER-SPRING 1750057 - Caterpillar

1. Use a 3/4" breaker bar and relieve the tension on the V-belts for the fan drive and remove them from pulley (1).2. Remove the tension from the A/C compressor V-belt and remove it from pulley (1). See the topic, Air Conditioning Compressor Remove and Install.3. Remove three bolts (2) that fasten pulley (1) to wedge bracket (3). 4. Install bolts (2) (removed in Step 3) in the threaded holes in pulley (1). Turn bolts (2) evenly until pulley (1) can be removed from wedge bracket (3).5. Mark the location of wedge bracket (3) on stub shaft (4) for assembly. It is necessary to install the wedge bracket in the same position to get correct alignment of the V-belts.6. Loosen the setscrew at location (X) and remove wedge bracket (3) and key (5) from stub shaft (4). 7. Remove two of bolts (6) and install two 1 - 14NF guide bolts.8. Remove the remainder of bolts (6) and remove stub shaft (4) from vibration damper (7). 9. Install tooling (A) and fasten a hoist. Remove vibration damper (7) from the crankshaft. The weight of the vibration damper is 86 kg (190 lb.). 10. Remove bolts (9) and remove vibration damper (7) from adapter (8). The following steps are for installation of the crankshaft pulley and vibration damper. 11. Inspect the vibration damper for signs of leakage or a dented (damaged) housing (10). Either condition can cause metal ring (11) to make contact with housing (10) and effect damper operation.12. Install the crankshaft pulley and vibration damper in the reverse order of removal.13. Be sure to align the dash mark on damper adapter (8) with the dash mark on the crankshaft.14. Be sure to align the dash mark on stub shaft (4) with the dash mark on damper adapter (8).15. Be sure to install wedge adapter (3) and key (5) in the original location to assure correct alignment of the V-belts and tighten the setscrew at location (X).16. Tighten bolts (2) evenly to a torque of 45 7 N m (32 5 lb. ft.).17. Repeat Step 16 until the torque does not change.