Brake caliper rewind

  1. My model of MX-5 is: __NB 1.6
  2. I’m based near: Prestwick
  3. I’m looking for technical help or recommendations on: tools required to rewind pistons__

Planning ahead, and wondered if I need a caliper rewind tool etc for my 2001 1.6?

I know some do and others use an Allen key.

Thanks

You retract rear calipers using an allen key. Front calipers; you just push back the piston.

That’s great, thanks for that.
In the past I’ve used a g clamp to push back pistons.
Any issues doing this on my Mx5?

Probably best to just use an Allen key. They’re cheap enough, certainly compared to the cost of 2 new rear calipers.

2 Likes

G-clamp and a block of wood/old pad fine to push back the front caliper piston (obviously loosen the master cylinder cap).

Using a clamp on the rears will damage the self adjuster.

2 Likes

Sorry guys,
I was meaning ok to use a g clamp on the fronts, not the rears…

1 Like

Recently with the Mazda3 front pads I followed a YouTube video example and applied the softened (two layers of cardboard box held by masking tape) G-clamp gently to the exposed back of the outside pad and the back of the caliper.

This simply pushed the piston back and being very finger-tip easy proved the sliders were still free.

Undo the bottom bolt holding slider to caliper, swing caliper up clear, lever out the pads and clean everything.
Re-assemble with shims in the correct orientation and just enough grease in all the right places.
A touch of medium thread-seal on the bolt to the slider sleeve and torqued up to spec.

About fifteen-twenty minutes a side with a trolley jack under the sill jacking point, and an axle stand right next to it just in case. Most of the time was in cleaning the caliper and shims etc and checking the tyres and discs.

2 Likes

I would strongly advise some form or additional help when doing the rears as well. The splined adjuster is made of cheese and if you rely only on that it is likely to be an emotional situation when it comes to the rear pads.

1 Like

Additional help as in another person?

No, you want to press it back at the same time you rewind it. Just don’t go over the top on the bicep flexing

2 Likes

Ah, ok
Cheers

The spline adjuster is soft pot metal; perhaps deliberately so (about £5-10 from Mazda). Make sure you have the right allen key fitted. Its too easy, because you are working blind, to pop in the wrong one, and end up rounding it. You can hook out the adjuster, and check. Its also easy to fit an allen key, and half retract the spline while adjusting, damaging it.

2 Likes