Dana 30 swap

Hello all,
I just finished up installing new bearings and seals on a 87 Dana 44 With 3:54 gears that I'm swapping into a 1994 xj with 3:07. Bought a dana 30 with the same gearing on Saturday that was being pulled from a 91 Cherokee. Just pulled the 30 off the truck this afternoon and discovered that the date on the gear cover is 7/20/85. Also, the drain plug is a square just like a Dana 44. Will everything swap out including brakes from a 85-94?
Thanks in advance!

If it was on the 91 already, it should work on the 94. Of course the gear cover might have come off of god knows what itself with all these swaps going on, LOL!!!

Yes, I thought maybe someone swapped the cover also. Would there be any other identifying dates on the housing itself maybe? I looked at the ring gear and carrier and could not find a manufacture date.
Greg.

Three different unit hub/bearing assemblies and matching disk brake rotor types were used during the years 1984-2001 on the XJ D30 axles. (XJ, MJ, TJ, and ZJ, axles can interchange most parts, so the 1999.5 cast/composite info may apply to all). Two different steering knuckle types were used during the years 1984-2001 on XJ D30 axles.

Unit Hub/Bearing Assemblies:

1) 1984 through 1989 - Original AMC hubs ( Jeep Part Numbers 4723371, 5252725, 53000228, 53000234 )
AMC brake rotors, AMC calipers, AMC steering knuckles, and AMC roller bearing hubs.
The unit hub/bearing are the same part number for both sides of the vehicle.

2) 1990 through 1999.5 - Older type unit hubs ( Jeep Part Number 53007449 )
Uses Composite brake rotors and Chrysler calipers and Chrysler steering knuckles.
The unit hub/bearing are the same part number for both sides of the vehicle.

3) 1999.5 through 2001 - New type unit hubs ( TIMKEN Part # HA597449 - Jeep Part Number 5016458 ) Uses Cast brake rotors and Chrysler calipers and Chrysler steering knuckles. The unit hub/bearing are the same part number for both sides of the vehicle.

Steering Knuckles:

1) 1984 to 1989 - AMC Steering Knuckles. Left and right side steering knuckles have different part numbers and only accept AMC calipers.

2) 1990 to 2001 - Chrysler Steering Knuckles. Left and right side steering knuckles have different part numbers and only accept Chrysler calipers.

Any XJ AMC or XJ Chrysler steering knuckle will fit on any XJ D30. Remember, unit hubs type, and brake caliper type, must match the steering knuckle type, Chrysler vs. AMC.

Brake Calipers:

1) 1984 to 1989 - AMC Brake Calipers. Left and right sides calipers have different part numbers and only fit on AMC steering knuckles.
2) 1990 to 2001 - Chrysler Brake Calipers Left and right sides calipers have different part numbers.

AMC and Chrysler calipers do not interchange, they must be mounted on the corresponding AMC or Chrysler steering knuckle.

Brake Rotors:

1) 1984 - 1989 - AMC Brake Rotors
2) 1984 - 1999.5 - Composite Brake Rotors
3) 1999.5 - 2001 - Cast Brake Rotors

Great info, thank you very much!
Greg

What exactly is a "Composite" brake rotor made of?

Ecomike said:

What exactly is a "Composite" brake rotor made of?

Click to expand...

The factory original composite rotors were two pieces bonded together. Most or all replacements are 100% cast iron machined to the correct shape and dimensions.

.

But what was the "Composite" material actually made of? Was it the hub area only, or was the brake wear face also composite? Was it all metal, 2 different metals, and therefore called composite?

This type of rotor derived its name from the fact that it combined a stamped steel center hat with a cast iron rotor. Thus, it was a composite of two different materials. The design proved to be about 20 percent lighter than a conventional one-piece cast rotor and saved up to a couple of pounds per rotor.

Composite rotors had a tendency to warp more easily than cast rotors.

Thanks. The term usage seemed very odd, now I get it.