Caterpillar — Bearing Adjustment and Hub Replacement
Adjustments · Spindle nut / hub bearings
From a Caterpillar owner's manual — check it applies to your exact model before use.
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Procedure
- Rotate hub slowly while tightening spindle nut to approximately 50 lbs.-ft.
- Loosen the spindle nut to remove the torque; do not rotate the hub.
- Finger tighten the spindle nut until just snug.
- Back nut out slightly until first castellation lines up with cotter key hole; insert cotter pin.
- Bend over the cotter pin legs to secure the nut.
- Nut should be free to move with only restraint being the cotter pin.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Initial torque approximately 50 lbs.-ft. (12" wrench or pliers with full hand force)
Source: Caterpillar owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.