Cherokee Wheel Cylinders - 9 or 10"

[Zenobian_84]

Not directly MJ related, but it could very well be with the automatic ones out there. :dunno: Picked up a swanky '92 Laredo last week (build thread incoming) and had spongy brakes all the way home. Chalked it up to them not being bled out correctly (home-brew "brake job") and decided to tinker around with the entire system. 

 

Purchased a reman. caliper for the driver front (old one had a broken bleeder valve) and got the fronts bled. Bled the rears out, and discovered the PO had disconnected the hose going from the top of the junction valve to the frame, causing some of the problems I was facing. 

 

Bled the rears, but discovered the driver rear has a decent leak coming from the cylinder itself. Going to replace both Friday afternoon after work, but I'm not sure what the difference between the 9" cylinder and the 10" is; both are showing as "exact matches" for the truck, and I need it running by the weekend for my girlfriend to start driving around.

 

Am I to assume the smaller is for the D35 and the other for the D44?  :hmm:

 

Non-abs (thankfully) so I don't have to deal with all that antiquated technology from the early 90s.

[ComancheKid45]

92 d35 or 8.25 should both be 9" drums.

[Guest]

92 d35 or 8.25 should both be 9" drums.

There were 8.25 axle's that early? I always thought they were a 95+ option :hmm:

[Alexia]

If you are not sure what size the drums are then measure them.

 

For 9", 13/16" Bore, Left and Right: (Up to 2000-03-09 XJs and MJs)

Dorman W37862(MOPAR 4423601 9")

 

For 9", 3/4" Bore, Left and Right: (2000-03-10 and up XJs)

Dorman W610166(MOPAR 4313056 9")

 

For 10", 7/8" Bore, Side Specific: (D44 XJs and MJs, later Police and Towing Packages)

Dorman W17508(MOPAR 52000849 10" Left) and Dorman W17507(MOPAR 52000848 10" Right)

[mvusse]

Both my 87 Mjs had 10" brakes on a Dana 35, one was a Pioneer 4.0/auto 4wd, the other came from the factory as a base 2.5 stick shift 2wd. A friend's 90 Cherokee had a Dana 35 with 9" brakes, my own 94 and 96 Cherokees (both 96s) had 9" brakes on a 8.25".