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Manuel
April 2nd, 2003, 13:01
I have a 99 Jeep Cherokee with 4WD.
I'm getting ready to do a brake job this weekend.
I know my front disks need replacing and I know my rear wheel cylinders both have leaks. I've been putting off replacing the cylinders/changing the seals.

Well, I have been finding out that it appears the rear drums for my vehicle come with either 9" or 10" drums.

Maybe this is a stupid question, but when they refer to the diameter, are they referring to the inner diameter of the drums??

I need to know this in order to get the right wheel cylinder kit or wheel cylinder.

Thanks,
Manuel
Matthew Currie
April 2nd, 2003, 15:52
It's the inside diameter of the drum.
Manuel
April 2nd, 2003, 16:38
Thanks Matthew.
Manuel
April 3rd, 2003, 13:04
FYI
For anyone with a 99 Cherokee w/ 4WD, I took off the wheels last night. It was built in March of 1999.

The rear drum diameter is 9 inches.
The overall height of the front rotor is 3 1/16.

I can now order my parts.

Manuel
JEEPZZ
April 3rd, 2003, 22:29
Is the 9 inch drum you have on a Dana 35 or Chryco 8.25? (does it have ABS?)
I believe one is the 9 and the other is the 10 incher.
Manuel
April 4th, 2003, 00:08
I have the Chrysler 8.25, no ABS, 9 inch drums
JEEPZZ
April 5th, 2003, 19:53
I guess only the D44 came with 10 inch brakes. My D44 drums measured 10 x 2.5.
Eagle
April 5th, 2003, 23:20
Originally posted by JEEPZZ
I guess only the D44 came with 10 inch brakes. My D44 drums measured 10 x 2.5.

No, the early Dana 35s came with 10 x 1.75" drums. Chrysler changed to 9" drums in either '90 or '91.
JEEPZZ
April 6th, 2003, 16:07
Originally posted by Eagle
No, the early Dana 35s came with 10 x 1.75" drums. Chrysler changed to 9" drums in either '90 or '91.
http://users.pandora.be/IMS/smileys/biggthumpup.gif
Slip Kid
April 6th, 2003, 18:07
That's right. The D44s have 10 inch drums, but they are wider than the D35 10 inchers.