Overview
The Crown Automotive J3172563 is an inner pinion bearing cone for the AMC Model 20 and 8.25 axles. It is a direct fit in the inner position.
Vehicles covered include the Cherokee XJ, CJ-5, CJ-7, J10, Liberty KJ and Scrambler, each with its listed years.
Key features
- Inner pinion bearing cone
- AMC Model 20 and 8.25 listed
- Sits in the inner position
Pinion bearing setup
The inner pinion bearing supports the pinion shaft inside the carrier, and its preload has a direct effect on how the ring and pinion teeth meet. Too little preload lets the pinion move under load, which can damage the gear set. Too much preload overheats the bearings and shortens their life. Because of this, the setup is a job for someone experienced with gear work.
When a bearing is replaced, the carrier and the matching cup should be checked and cleaned, and the gear mesh should be confirmed after the pinion is set. Pinion shims and bearing spacers are often replaced along with the cone when the gear set is opened up.
- Whine from the differential that changes with load
- Heat at the pinion area after driving
- Leaking pinion seal near the front of the axle
- Rough rotation of the pinion by hand
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | J3172563 |
| UPC | 848399058192 |
| Axle | AMC Model 20 and 8.25 |
| Position | Inner |
| Component | Bearing cone |
Vehicle fitment
It fits the 1991–2001 Jeep Cherokee (XJ), 1976–1983 CJ-5, 1976–1986 CJ-7, 1976–1986 J10, 2002–2007 Liberty (KJ) and 1981–1985 Scrambler.
The list does not include the Grand Cherokee or any Wrangler model.
Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Pinion bearing preload is set during gear setup, so a professional should install this cone and set the preload.
What’s included
One inner bearing cone.
