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MK1 Rear Brake Caliper Overhaul

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Mazda Mender
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Re: MK1 Rear Brake Caliper Overhaul

Postby Mazda Mender » Mon Mar 18, 2013 10:06 pm

You are now a mender......

Ricolas.JPG
Ricolas.JPG (31.52 KiB) Viewed 1969 times





Thanks Roy :wink:
M-m
The Disclaimer:-
This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.


Mk 1 Eunos 93 black V.S II 1.8 fettling,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 being rebuilt,
Mk 1 Eunos 90 1.6 (claimed by daughter)
Mk 1 Eunos 96 1.8 blue B2...being fettled
Mk1 Eunos 93 1.6 black S special **gone**
http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
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Re: MK1 Rear Brake Caliper Overhaul

Postby Ricolas » Mon Mar 18, 2013 11:24 pm

Hurrah! :text-thankyouyellow:
Ricolas
1991Mariner Blue pretty much all original!

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Re: MK1 Rear Brake Caliper Overhaul

Postby Ricolas » Tue Mar 19, 2013 3:56 pm

Offside caliper now off car being cleaned, wirebrushed and so forth. This was the side that did not have a problem, however this caliper is in a much worse state. One of the slider pin rubbers has a hole in it, and the corrosion has gone beyond the piston rubber, with pitting on the piston, and a small chunk missing from it!! Easy to see how moisture has got in there and caused corrosion.

So although I will put it back together now, and back on the car, I suspect that I am actually going to have to renew at least the piston and rubbers. By that point, would it be cheaper to get a whole new/reconditioned calliper?
Ricolas
1991Mariner Blue pretty much all original!

Beckenham, Kent
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Re: MK1 Rear Brake Caliper Overhaul

Postby Ricolas » Tue Mar 19, 2013 5:12 pm

Money money money. Hm. I can see your point.

A new piston on its own would do, until I have been right around the car perhaps to see the state of play elsewhere. I shall ponder further...
Ricolas
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Beckenham, Kent
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Re: MK1 Rear Brake Caliper Overhaul

Postby flea » Tue Mar 19, 2013 5:56 pm

Nick he could get the full kit from Autolink including new pistons for £25 to £30 each side saving a lot of dosh
Eunos 1.6 special 1989 with a few added extras
Eunos 1991 1.6
Eunos 1990 1.6 project
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Re: MK1 Rear Brake Caliper Overhaul

Postby flea » Tue Mar 19, 2013 6:04 pm

yeah i saw that mate. But it gives folks the choice of either & it only takes less then an hour to refurbish each one :handgestures-thumbup:
Eunos 1.6 special 1989 with a few added extras
Eunos 1991 1.6
Eunos 1990 1.6 project
Mk2 1999 1.8
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Re: MK1 Rear Brake Caliper Overhaul

Postby Mazda Mender » Tue Mar 19, 2013 7:14 pm

Fitting a refurbed caliper is far quicker and easier, and less messier then fettling with your own, but remember that a refurbed caliper is only some one else that has taken it apart to do what you are going to be doing to your old unit, and you pay for it, it is down to saving and having a proper mending session.
Now there are cheap calipers on e-bay,which are cheap chinese copies and i really do not recommend wasting your cash on them,
it is like anything else cash or choice.
M-m
The Disclaimer:-
This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.


Mk 1 Eunos 93 black V.S II 1.8 fettling,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 being rebuilt,
Mk 1 Eunos 90 1.6 (claimed by daughter)
Mk 1 Eunos 96 1.8 blue B2...being fettled
Mk1 Eunos 93 1.6 black S special **gone**
http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
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Re: MK1 Rear Brake Caliper Overhaul

Postby Ricolas » Tue Mar 19, 2013 10:43 pm

New kit from Autolink might well be the way to go then. I'd rather keep the thing on the road myself if I can!

I have no intention of buying a cheap chinese caliper, but I am intrigued - how bad are they? :shock:
Ricolas
1991Mariner Blue pretty much all original!

Beckenham, Kent
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Re: MK1 Rear Brake Caliper Overhaul

Postby Ricolas » Tue Mar 19, 2013 10:44 pm

NB you might want to take my badge back off me for not understanding the copper washers where the brake pipe attaches to the calliper. :whistle: Ooops. Spongy pedal in minutes! :oops:
Ricolas
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Beckenham, Kent
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Re: MK1 Rear Brake Caliper Overhaul

Postby Mazda Mender » Tue Mar 19, 2013 11:30 pm

LOL
The guide for the brake strip and rebuild will be so much better to follow once all the pic's have been added, which will be built from me, M-m Junior and Fleas input together, so then you will not miss the copper washers ;0)
M-m
The Disclaimer:-
This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.


Mk 1 Eunos 93 black V.S II 1.8 fettling,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 being rebuilt,
Mk 1 Eunos 90 1.6 (claimed by daughter)
Mk 1 Eunos 96 1.8 blue B2...being fettled
Mk1 Eunos 93 1.6 black S special **gone**
http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
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Re: MK1 Rear Brake Caliper Overhaul

Postby Ricolas » Thu Mar 21, 2013 11:01 am

M-m jnr might want to change the bit regarding jacking up the front of the car to change the rear calipers too! :laughing-rolling:

There were another couple of things I thought of, and I will note them down in a PM to Flea in due course.
Ricolas
1991Mariner Blue pretty much all original!

Beckenham, Kent
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Re: MK1 Rear Brake Caliper Overhaul

Postby Mazda Mender » Thu Mar 21, 2013 11:27 am

LOL
I'll tell him, about his fat finger moment, i know he is working on adding all the pics by this weekend.
M-m
The Disclaimer:-
This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.


Mk 1 Eunos 93 black V.S II 1.8 fettling,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 being rebuilt,
Mk 1 Eunos 90 1.6 (claimed by daughter)
Mk 1 Eunos 96 1.8 blue B2...being fettled
Mk1 Eunos 93 1.6 black S special **gone**
http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
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Ricolas
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Re: MK1 Rear Brake Caliper Overhaul

Postby Ricolas » Sun Mar 24, 2013 10:37 am

Quick additional query on handbrake adjustment - the general advice appears to be use the hex screw to lock the rear wheel and then back of about half a turn.

That seems to leave a lot of friction, and the wheel is fairly immobile. Any thoughts on this?
Ricolas
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Re: MK1 Rear Brake Caliper Overhaul

Postby Mazda Mender » Sun Mar 24, 2013 11:04 am

It's more of a guide line, lock it up FT and just wind it off until the pads are just touching ,depending on pads ,disc, age etc it could be a 1/4 of a turn to 3/4 of a turn, just work on that the pads need to be just catching the disc and you can not go wrong.
M-m
The Disclaimer:-
This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.


Mk 1 Eunos 93 black V.S II 1.8 fettling,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 being rebuilt,
Mk 1 Eunos 90 1.6 (claimed by daughter)
Mk 1 Eunos 96 1.8 blue B2...being fettled
Mk1 Eunos 93 1.6 black S special **gone**
http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
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Re: MK1 Rear Brake Caliper Overhaul

Postby Lazza » Sun Mar 24, 2013 12:48 pm

Also, if you have just fitted new pads the surface will be a touch rough. This will polish off to a smooth surface quickly.
It's only a preset to get the handbrake adjustment right anyway. It'll sort itself out after a few miles.
Lazza

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