• NAXJA is having its 18th annual March Membership Drive!!!
    Everyone who joins or renews during March will be entered into a drawing!
    More Information - Join/Renew
  • Welcome to the new NAXJA Forum! If your password does not work, please use "Forgot your password?" link on the log-in page. Please feel free to reach out to [email protected] if we can provide any assistance.

87-89 disc brake question

BillR

Toy Jeep driver!
Location
Flagstaff, AZ
I swapped over to the late 80s style knuckle and caliper, and I'm having some trouble with the pads dragging. Could one of you check the knuckle and see if there's a washer between the knuckle and the caliper mounting plate. It's all one piece on the later models. I'm thinking the caliper may me too close to the rotor.:confused:
TIA!
 
When you changed the knuckle and caliper, did you use the unit bearing for the same year knuckle, or from a different year? What year rotors are you running? All this stuff has to come from the same "generation" to match up.
 
Eagle said:
When you changed the knuckle and caliper, did you use the unit bearing for the same year knuckle, or from a different year? What year rotors are you running? All this stuff has to come from the same "generation" to match up.
I changed everything over. (hubs, rotors, calipers, knuckles, backing plates)
I was coming down a long winding hill Saturday behind a line of traffic, so I used the brakes more than normal. When I got to the bottom, I smelled the brakes getting hot. The smell was only from the passenger's side; the driver's side was fine. When I got home and jacked the front end up, I confirmed that the brake pad was indeed dragging on that side. The calipers and rotors are brand new.
When I got the knuckles, the caliper mounts were already taken off. I'm not sure if there was a washer or spacer of some kind in there previously between the caliper mounts and the knuckles. I would think that the calipers being able to slide on the pins would eliminate this binding.:confused:
 
Is the big plunger on your caliper getting stuck? I have a '90 and expeirenced this from the passenger side. It may not be your problem, but worth checking out.
 
Backdraft said:
Is the big plunger on your caliper getting stuck? I have a '90 and expeirenced this from the passenger side. It may not be your problem, but worth checking out.
That makes sense, but it did it with brand new calipers..:confused:
 
take a good look at the tabs that the pads ride on.

on my old knuckles, the tabs got a groove worn into them, the pads could, and would catch this groove if they were worn just right and they would stick and drag.
 
Back
Top