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Home >> GMC >> 1990 >> S15 Jimmy RWD, Automatic, 700R4/MD8 >> Repair and Diagnosis >> External Pages >> Different car >> Section 5 (Suspension - Front (2WD)) >> Adjustments >> Front Wheel Bearings

Front Wheel Bearings

WARNING: This page is about a different car, the 1990 GMC Safari and 1990 Chevrolet Astro. 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.
  1. 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.
  2. 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.
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