Rear Caliper Adjuster Disabling
#1
Posted 07-07-2011 11:16 PM
Here is a link with some good pictures of the internals.
http://www.miata.net...rake/index.html
Which I got from this thread
http://mazdaracers.c...ch=1
Thanks
#2
Posted 07-08-2011 05:24 AM
and will you still be able adjust the caliper manually after removing the auto adjuster?
No more adjustment. Will function like the front caliper. That is the name of the game because the adjuster extends the pad to the rotor creating drag. Throw out all the bits as long as you don't create a brake fluid leak.
- Butters likes this
#3
Posted 07-08-2011 08:16 AM
So were you able to remove the screw portion from the bore in the caliper? It looks like it would be difficult to do so without creating a leak.
#4
Posted 07-08-2011 01:31 PM
So were you able to remove the screw portion from the bore in the caliper? It looks like it would be difficult to do so without creating a leak.
If you refering to the hex head bolt with flat sealing washer shown in the upper left hand corner of picture "J", that MUST remain to keep brake fluid from leaking. Same sealing bolt/flat washer shown in picture "B" installed.
#5
Posted 07-08-2011 01:58 PM
J~
#6
Posted 07-09-2011 03:06 PM
If you refering to the hex head bolt with flat sealing washer shown in the upper left hand corner of picture "J", that MUST remain to keep brake fluid from leaking. Same sealing bolt/flat washer shown in picture "B" installed.
I was talking about the screw piece that threads into the auto adjuster. I ended up just leaving it in though.
FYI, Drago has ones already done in the classifieds under brakes.
J~
Thanks for the heads up. Those are actually a great deal. I would have gone with them if I hadn't recently replaced my calipers.
#7
Posted 07-09-2011 03:14 PM
So the first step is to get the piston out. If you turn the adjuster all the way out, then you can simply jiggle the piston the rest of the way out by hand.
Here is the piston in the vice.
I used the impact to thread a bolt into the funky threaded hole in the adjuster. I just cross thread it in. This whole process made me really nervous since, at this point, if it didn't work I would be buying a new caliper.
then after about an hour of struggling trying to get at the clip with a screw driver, I decided to use brute force. I hooked a cat claw under the bolt like so.
and beat the hell out of it, in an upward direction, with a hammer. I was relieved when it worked. Here is the auto adjuster mechanism outside of the piston.
Then just put it back together. I hope this helps someone in the future.
#8
Posted 07-11-2011 06:33 PM
Set the piston on your bench with the adjuster guts facing up.
Drop the little toggle pin (rice shaped thing that is part of the adjuster) down the threaded hole in the piston.
Screw the adjuster (jack?) screw down into the piston until it hits the toggle pin you just dropped in.
Keep screwing it in (you may need pliers to grip the end) and once it bottoms it will push the adjuster stuff out.
I've done 4 this way, two I was able to do with no tools at all, two required simple pliers.
Alan
#9
Posted 07-11-2011 06:35 PM
Here's the easy way to get it out, very, very easy.
Set the piston on your bench with the adjuster guts facing up.
Drop the little toggle pin (rice shaped thing that is part of the adjuster) down the threaded hole in the piston.
Screw the adjuster (jack?) screw down into the piston until it hits the toggle pin you just dropped in.
Keep screwing it in (you may need pliers to grip the end) and once it bottoms it will push the adjuster stuff out.
I've done 4 this way, two I was able to do with no tools at all, two required simple pliers.
Alan
I forgot, you will need to remove the jack screw to do this. That does require some finesse. (just use a pick to get the snap ring out)
#10
Posted 07-11-2011 08:12 PM
#11
Posted 07-12-2011 03:07 PM
#12
Posted 07-12-2011 05:45 PM
[attachment=1453:caliper_edited-1.jpg]
Thanks for recognizing my genius, very few do.
#13
Posted 07-12-2011 06:11 PM
I actually sawed the entire e-brake apparatus off the back of the caliper and welded it up.
Thanks for recognizing my genius, very few do.
It's probably material for a weenie protest but it's a damn good idea.
#14
Posted 07-12-2011 07:41 PM
#15
Posted 07-13-2011 05:47 AM
How is it not legal? From the GCR: "Parking brake mechanisms, and actuating components may be removed."
From the GCR Glossary defination:
Removal - To take off a componet.
#16
Posted 07-13-2011 08:37 AM
45 SM
#17
Posted 07-13-2011 10:33 AM
I don't think that the removal of the item is the question....it's the "welded it up" part that may be questionable...
Yeah I know what you mean. I'm just considering it fixing a brake fluid leak that occurred after I removed the parking brake components.
#18
Posted 07-13-2011 11:04 AM
Yeah I know what you mean. I'm just considering it fixing a brake fluid leak that occurred after I removed the parking brake components.
Not trying to be harsh, but that ^ thought process is what got production car rules to where they are today. There is also a Spec Miata rule about fixing to the Mazda FWS standards. Have you ever heard of the slippery slope of rules? There is a reason why there are somewhere between 2 & 3,000 Spec Miatas today with Spec Miata being the class with the MOST event entries of all the twenty some classes.
#19
Posted 08-11-2011 08:04 AM
#20
Posted 08-11-2011 09:51 AM
Glenn Murphey, Crew Chief
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