Curious on this one. One of my wheel cylinders has gone bad. When I looked up the part, I found that there are 2 different parts, apparently there are 2 different bore sizes for the wheel cylider to fit? I'm gonna make the naturally assumption that pretty much all 3rd gen J's (least 95-99) are using the same size, anyone know the correct one? Else i shall buy both, and return the one I dont need.
thanks
I'm not really sure which size, but I understood that all were the same in the rear until 03+. They have larger rear brakes, which to me would mean a larger wheel cylinder.
FU Tuning
3rd gen rear brakes utilized 2 different sized shoes and drums, which would most likely account for 2 different wheel cylinders.
Double-check your drum....the outside surface. It should have the shoe size stamped on there, so perhaps it also has the bore size.
Personally, what I would do is purchase both sizes, then match up which one I need and return the other after the job is complete.
Or, if you have a 2nd car or someone to drive you, take the old one to the parts store and match it up there.
Also, you probably already know this but worth saying...if you replace 1 wheel cylinder, you should replace the other side, also, even if it's not visibly failing.
-Ferrite
Yeah, I know I should change both. But, at this point i've only done one of them for temporary. I think i'm gonna end up going back through and changing the shoes and springs, and drums. So i'll get the other one at that time. I dont drive the Cav that much, so it's not really that big of a deal to me. And for the time being, it's managing to brake in a straight line again, so I think i'm good for a couple weeks.
I did find this out though with a good ammount of time on google. Not sure what forum it was on, but I found a couple part numbers for the correct wheel cylinder.
For the (i think it started at 85) but 95-2002 for sure it's the cylinder that needs to fit the 11/16th bore.
GM PN = 18060092
AC Delco PN = 172-1444
In case those would be needed by anyone for future reference. I put the par number on NAPA's web site, and it listed their wheel cylinder for 8.39USD.
i accidently got the wrong ones once... believe me get the smaller ones..
the bigger ones were no way even fro an 03 cavy they were for like a damn truck. they were huge, i wouldnt doubt if even the 03 uses the same its a little bigger drum but not much
how do you know they went bad? im just curious
ive been hrough this one before...
the 2 different wheel cylinders are apparantly due to 2 different types of suspension. the smaller wheel cylinder is the replacement if you have the upgraded suspension. the larger wheel cylinder is for the normal suspension.
this is atleast what the parts store i purchased my cylinder from had listed in their computer has their reasoning for it.
make sure you have lots of lubricating spray or liquid wrench to get the bolts off that are holding it on. on my 98 it was held on with 2 small e-torx bits. thats an external torx bit, which means that rather the torx bit fitting inside the screw or bolt somewhat like an allan key, it fit around it like a socket wrench. unfortunatly when i did mine, i didnt have a set of these bits (i do now though), so i had to use a 12 point socket, believe it was 1/4 inch. it worked, but it wasnt very pretty.
have fun.
1997 RedR - ZedR
Quote:
so i had to use a 12 point socket, believe it was 1/4 inch.
I used a 6 sided 1/4 socket. They werent torqued on there real tight, so all it needed to do was pop them loose, and it worked. Proper tool would be a #6 torx socket.
