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-   -   Brake caliper rattles on drivers side,help. (https://www.rx7club.com/1st-generation-specific-1979-1985-18/brake-caliper-rattles-drivers-side-help-12947/)

DONNA 08-01-01 07:00 AM

Brake caliper rattles on drivers side,help.
 
Has anyone else had a problem with their brake caliper rattling,, i can be driving and it sounds like something is loose up front till i lightly apply the brake pedal and then it stops till i remove my foot from the pedal,,,i have removed the tire and the caliper has a small amount of play in it, i found a screw on top that has a metal cap on it that goes thru the caliper to attach to housing, but adjusting it will only become a rattle again after a few yards of driving again,,,,,thanks for any input......

Denny 08-01-01 08:06 AM

Morning, Donna...

Your caliper is held to the backing plate by two bolts. A top bolt and a bottom bolt, and the bolt heads are on the inside of the backing plate, facing the vehicle. As I recall, I think they're 14mm. Raise the car, Take the tire off, spin the steering wheel as if you're making a tight right turn. that will make getting to the bolt-heads easier.

Hopefully, it's the top bolt that's loose. It's easy to get to. It's the bottom bolt that's a real bull to get to, and to remove when it's time for brake pads. The bottom bolt sets inside a "dished" part of the backing plate. You can't get a socket on it, and it's barely reachable with an offset wrench. Watch out you don't knock off the corners of the bolt-head! I bought a cheap 14mm offset wrench from Wal-mart, then ground it down at the wrench-head, and neck so that it would fit into the dished area and I could get a purchase on the bolt-head.

To remove the bolt takes a prybar on the steering knuckle, which is real close to the backing plate, and some delicate play with the bolt. Same for putting it back in! What I did was to grind the bolt down a bit until it barely fit into the dished area without having to use the prybar. Makes changing pads a lot easier...

A tip of the Stetson,
Denny, from the 'ol corncrib;)

Kerry 08-01-01 08:47 AM

If you are missing any of the anti-rattle clips, you will get the same thing. You might want to look at both sides to see if they have the same number of little metal clips.

Kerry

RXcetera 08-01-01 09:37 AM

I had the same problem for the longest time on my first gen. Tightenning the calipers never fixed the problem for me. It finally stopped when i bought a new mounting kit for my pads... it had an anti rattle clip, like Kerry said, and chims. I guess the rattle was caused by the pads moving around when no braking force was applied. It doesnt rattle anymore.

Pele 08-01-01 10:06 PM


Originally posted by Kerry
If you are missing any of the anti-rattle clips, you will get the same thing. You might want to look at both sides to see if they have the same number of little metal clips.

Kerry

Previous owners or his and her mechanic was/were freakin morons. I have various odds and ends for caliper mounting hardware... I think one shim somewhere on the front and one spring. Not a complete set of shims or springs on any wheel, but I don't recall that any wheels were missing all of the springs and clips and shims. I just need to buy another full kit. When I finish all my mods and start autocrossing, I'll just buy loaded calipers and good stock rotors, unless anyone can suggest good autocross AND street rotors and pads.

flintnexus 01-28-07 02:17 PM

I also recently started getting a wicked rattle in one of my front calipers but mine is the wedge type from SA. I believe I might be missing a peice somewhere in there? Anyone know what kind of hard ware there should be. It seems like all thats holding the wedges in place is pressure. Is this right??


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