Mot Failure

[andrewl41]

So, my GT failed it's MOT last week.

Unbalanced front brakes no less. I thought I had it all fixed, I took the front right caliper off and one of the rods was siezed solid. So I got it free and greased it all up and with a new set of pads on both sides for good measure put it in for a re-test today. Sadly, it failed again for exactly the same reason, front right ~35% down on force. Now I'm at a bit of a loss. The caliper now moves freely and smoothly.

Does anyone have any experience with this and can tell me where to look next?

Any help would be greatly appreciated!

Thanks

Andrew

[GT4 BOOSTER]

if you cleaned and greased the 2 slider rods mate, all thats left is the caliper piston , take the caliper off , pump the brake pedal , have someone do it for you , and watch the piston pop out about an inch and a half, no more than that or it will pop out altogether , its most likely got pits on it and possibly rust , give it a good clean up and maybe file the pits out a bit until they feel smooth - failing that get a recon caliper exchange from www.brakesinternational.co.uk £60

if your are capable you can buy a caliper service kit with a new piston and change the lot yourself..The caliper you will get is pretty damn good from BI , i have used them more than once.

[Leeky]

If i was you i would strip down the caliper completely - as in remove the piston.

Get a brake service kit from Toyota the scrub down and rebuld it using new seals etc

[andrewl41]

Thanks for the advise!

A problem with the piston did cross my mind but I just couldn't see what it could be that would cause this. I kinda thought that if it's working then it's working and there was little there that could go wrong. That, and I really didn't want to go messing with things I wasn't sure of.

So with renewed confidence I shall attack the piston tomorrow.

Thanks again.

Andrew

[GT4 BOOSTER]

they only take it up to 100 on the mot testing scale , which is barely a touch of the pedal - £25 at toyota for a kit enough to do both sides , it contains only rubber seals metal spring clips and grease though , a piston from toyota is as much as a recon caliper from BI , IIRC