LINES GP-BOOM CYLINDER 2552052 - Caterpillar

Before adjustment of the wheel bearings is started, check to be sure the bearing cups have a tight seat against the bottom of the bore in the wheel. Use a .001 in (0.03 mm) or .002 in (0.05 mm) feeler gauge to check for any clearance behind the bearing cup. If any clearance is found, use a bearing driver or press to move the bearing cup until it has a tight seal with no clearance.Adjustment On The Tractor
1. Put the wheel and bearings in position on the axle housing.2. Install the hub and ring gear.3. Install retainer (1) without shims (4). Use three bolts as shown.4. While the wheel is turned, tighten the bolts to 25 lb ft (35 N m). Tighten each bolt one time only.5. While the wheel is turned, tighten the bolts to 50 lb ft (70 N m). Tighten each bolt one time only.6. Use a depth micrometer (2) to measure through the holes with threads in the retainer and find the average depth.7. Use an outside micrometer (3) to measure the thickness of the retainer at the holes with threads and find the average thickness.8. Find the difference between the two average measurements. This difference is the distance between the end of the axle housing and the retainer.9. Remove retainer. Install enough shims (4), between the axle housing and the retainer, so their thickness is .012 in (.030 mm) more than the distance found in Step 8.10. Install retainer (1). While turning the wheel, tighten the bolts that hold retainer to the axle housing to a torque of ... 100 10 lb ft(135 14 N m) FOR TORQUE VALUES NOT GIVEN, SEE THE FIRST PAGE OF SPECIFICATIONS FOR GENERAL TIGHTENING TORQUES.