Overview
The Crown Automotive 83506252 is a brass style synchronizer ring for the 1st and 2nd gear positions of the AX15 manual transmission. It is tied to a 4.0L 6 cylinder engine, and two rings are required.
It fits Jeep Cherokee XJ, Comanche, Grand Cherokee ZJ, Grand Wagoneer SJ, Wagoneer SJ, Wrangler TJ and Wrangler YJ vehicles. Each ring has three alignment notches and 36 teeth, and it measures 3/8 inch thick.
Key features
- Brass style ring
- Three alignment notches
- 36 teeth
- 3/8 inch thick
- Two required, per Crown Automotive
- Covers AX15 1st and 2nd gear
Ring wear and gear timing
Synchronizer rings in the 1st and 2nd gear positions work by friction, bringing the gear to matching speed before the dog teeth engage. Brass rings wear gradually, and worn rings show up as grinding or difficulty finding first or second, especially when the transmission is cold. Because the rings and sleeves work together, examine the cone surfaces on the gears and the hub teeth while the gearbox is open. Clean, even wear on the cone is a good sign, while glazing or flat spots point to replacement.
Two rings are fitted, so replacing both at the same time keeps the 1st and 2nd synchro set balanced. Check the alignment notches against the hub during reassembly, and confirm each ring sits on the correct gear position before closing the case. Once the rebuild is complete, change the gearbox fluid to the type the transmission needs and drive gently at first to let the new surfaces bed in.
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | 83506252 |
| UPC | 848399026818 |
| Application | AX15 1st and 2nd gear synchronizer ring |
| Style | Brass style |
| Alignment notches | Three |
| Teeth | 36 |
| Thickness | 3/8 inch |
| Quantity required | Two |
| Engine noted | 4.0L 6 cylinder |
| Fitment type | Direct Fit |
Vehicle fitment
It is a direct fit for 1989–1999 Jeep Cherokee (XJ), 1989–1992 Jeep Comanche, 1993–1994 Jeep Grand Cherokee (ZJ), 1991 and 1993 Jeep Grand Wagoneer (SJ), 1989–1990 Jeep Wagoneer (SJ) Limited, 1997 Jeep Wrangler (TJ) Sport and 1988–1995 Jeep Wrangler (YJ).
Wagoneer years other than those listed, and Cherokee, Comanche and Wrangler years outside these ranges, are not covered. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Two rings are needed, and they sit inside the transmission, so replacement starts with transmission disassembly. A transmission shop should handle the work and confirm both rings go onto the correct gear positions.
What’s included
Two rings are needed for the AX15 1st and 2nd gear positions, as Crown Automotive notes. No other hardware is stated.
