Symptoms
Play at the top and bottom of the tire, growling that changes when you turn, grease flung inside the rim, or hubs that won't engage. The stock five-bolt Warn hubs on 1981–86 CJs are weak, and Quadra-Trac trucks have drive plates rather than hubs.
The fix, step by step
- Remove the hub, the outer nut, lock washer and inner nut, then pull the rotor and catch the outer bearing.
- Clean everything, replace bearings and races as pairs, and press the new races in square.
- Seals come in two sizes (2 1/8 in and 2 5/16 in), so measure the old one first.
- Pack the bearings fully and tighten the inner nut to 50 ft-lb while turning the rotor to seat them, as the manuals quoted in the Off-Road.com thread say.
- Then back it off (one owner backs off about 1/6 turn), fit the lock washer and torque the outer locknut to 50 ft-lb and bend the lock-washer lip over it (1981 Jeep factory service manual; the inner nut is set the same way there, 50 ft-lb then back off 1/6 turn), and check end play: the manuals quoted there specify 0.001–0.005 in with a dial indicator.
- If the six spindle bolts come out, replace the needle bearing inside the spindle too.
Tools & part numbers
- Hub/spindle-nut socket
- torque wrench
- bearing packer (optional)
- race driver or long bolt
- brake cleaner
- high-quality wheel-bearing grease.
Where to buy the parts
Crown SET45 front outer wheel bearing kit, 76–86 CJQuadratec (Crown Automotive) ↗Amazon ↗
Crown SET47 front inner wheel bearing set, 77–86 CJQuadratec (Crown Automotive) ↗Amazon ↗
Yukon AK F-J01 front axle bearing & seal kit, 76–83 CJ-5/CJ-7 Dana 30Quadratec (Yukon) ↗Amazon ↗
Mile Marker 470 stainless manual locking hubs, 81–86 CJ (5-bolt)Quadratec (Mile Marker) ↗Amazon ↗
Hunting a used or discontinued part? Search eBay Motors for Jeep CJ-7 parts →
Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.