Front Wheel Bearings
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 1990 GMC S15 Pickup, 1990 GMC S15 Jimmy, 1990 GMC Pickup, 1990 GMC Cab & Chassis, and 1990 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Never preload tapered roller bearings or damage to roller ends will result. Bearings are designed to have a slightly loose feel when properly adjusted.
- Raise and support vehicle. Rotate wheel by hand to check bearings for excessive tightness, looseness, noise or roughness. Grip wheel assembly at top and bottom and check hub play. If movement is not .001-.005" (.03-.13 mm), adjust bearings.
- Tighten spindle bearing nut to 12 ft. lbs. (16 N.m) while turning wheel forward by hand. Back off nut until it is just loose. Finger tighten nut until snug. Loosen nut slightly (no more than 1/2 a flat) until new cotter pin can be installed. Recheck hub play.