WASHER 2504465 - Caterpillar

(5) 8K-0066 Shim Pack thickness ... 2.84 mm ... (.112 inch)Consisting of:Six ... 0.05 mm (.002 inch)Seven ... 0.25 mm (.010 inch)One ... 0.76 mm (.030 inch)Wheel Bearing Adjustment (On Machine)
The tire and rim must be removed for this procedure.1. Use an outside micrometer to measure the thickness of retainer (4) at each of the three small holes used for the depth measurement. Find the average value of the three measurements.2. Apply lubricating oil to the wheel bearings. Assemble seal group (6) and (7), the seal retainers, the wheel bearings and wheel assembly (1) on spindle housing (8).3. Install hub (2) on spindle housing (8).
Illustration A Bolt Tightening Sequence4. Apply lubricating oil to the threads of bolts (3). Use three bolts (3) and the washers to install retainer (4) without the shims on spindle housing (8). Install three bolts (3) in the locations that are shown in Illustration A.5. Tighten bolts (3) in the sequence shown in Illustration A to a torque of 115 15 N m (85 11 lb ft).6. Release the parking brake. Refer to Operation and Maintenance Manual, "Parking Brake Manual Release" for the machine that is being serviced.7. Rotate the wheel assembly one revolution. Tighten bolts (3) again to a torque of 115 15 N m (85 11 lb ft).8. Loosen bolts (3) so wheel assembly (1) can move a small amount on the wheel bearings.9. Tighten bolts (3) again in sequence to a torque of 20 7 N m (15 5 lb ft).10. Rotate the wheel assembly one revolution. Tighten bolts (3) again to a torque of 20 7 N m (15 5 lb ft).11. Use a depth micrometer to measure the distance from the outside of retainer (4) to the end of spindle housing (8), through the three small holes in retainer (4). Find the average value of the three measurements.12. Subtract retainer (4) thickness from Step 1 from the value found in Step 11. The difference is the clearance between the end of spindle housing (8) and retainer (4).13. Assemble shims (5) to obtain the same thickness as the clearance dimension found in Step 11. The shim pack must be within 0.025 mm (.001 inch) of the clearance dimension.14. Remove bolts (3) and retainer (4).15. Install shim pack (5), retainer (4) and bolts (3) to spindle housing (8). Tighten bolts (3) evenly and in sequence from the top. Tighten bolts (3) to a torque of 125 20 N m (90 15 lb ft) plus tighten an additional 120 10 degrees.