Aw11 rear pads replacement problem

An area for technical topics concerning AW10's and AW11's

Moderator: Moderators

Forum rules
This area is dedicated to technical discussions concerning AW10's and AW11's. Please try to spell correctly because this will help people find information later if they are using search functionality. If you need assistance with your car and want to host a spanner day, please use the appropriate section of the forum: http://mr2.org.nz/phpbb3/viewforum.php?f=35 Thank you.
Post Reply
Mikew
Club Member - MR2OCNZ
Posts: 150
Joined: Wed Apr 06, 2005 8:59 pm
Stomping Ground: Wellington
Prime Mover: AW11
First name: Mike

Aw11 rear pads replacement problem

Post by Mikew »

Replacing the rear pads should have been a routine job but....
Manual says you 'it maybe necessary to pushback the piston caliper piston. Use needle nose pliers to move the piston. Turn the piston clockwise while pushing it in until it locks.
Can't get either side to move following those instructions.
Tried a big c-clamp but no joy either.
Any clues before I pull the caliper to bits???
Cheers
AW 11, 84na, 85na, 87sc targa auto, 87 sc hardtop manual,
SW 20 91 Auto, another SW 20 TT
1's never enough
Top
User avatar
JasonFriday13
Club Member - MR2OCNZ
Posts: 2503
Joined: Mon May 21, 2007 5:19 pm
Stomping Ground: Taranaki
Prime Mover: SW20
First name: Jason

Re: Aw11 rear pads replacement problem

Post by JasonFriday13 »

C clamps don't work, as you found out. You have to rotate the piston back in because the handbrake is part of the assembly and it's on a spiralled shaft. You have to turn it clockwise to move it in and then line the marks in a certain orientation, which I've forgotten since it's been ages since I've done brakes.
Jason Ross, current cars:
Project: 1990 SW20 GT, 1992+ brake swap, 1992+ subframe swap, 1996 Celica turbo engine swap, 1996 MR2 LSD gearbox swap, Caldina Turbo coil-on-plug ignition, Link G4 Storm, 161kw @ 10psi.
Daily: 2004 Toyota Vitz RS, 1.5L, 5sp
Tow rig: 2009 Camry, 2.4L, auto
Scrapped: 1989 SW20 GT, 1992 SW20 G-Limited, ex EssDub car, donor, 1997 Toyota Tercel 3dr hatch, front crash, 1990 SW20, G-Limited, ex EssDub car, roll crashed, donor
Sold: 1987 AW11 Supercharged, 1991 SW20 G-Limited, ex EssDub car
Top
Mikew
Club Member - MR2OCNZ
Posts: 150
Joined: Wed Apr 06, 2005 8:59 pm
Stomping Ground: Wellington
Prime Mover: AW11
First name: Mike

Re: Aw11 rear pads replacement problem

Post by Mikew »

Thanks Jason. Have tried turning clockwise with needle nosed pliers but nothing moves, is there a special tool I need to have for this?
AW 11, 84na, 85na, 87sc targa auto, 87 sc hardtop manual,
SW 20 91 Auto, another SW 20 TT
1's never enough
Top
User avatar
85AW20v
Club Member - MR2OCNZ
Posts: 888
Joined: Fri May 21, 2004 10:25 pm
Stomping Ground: Bay Of Plenty
Prime Mover: AW11
First name: Simon

Re: Aw11 rear pads replacement problem

Post by 85AW20v »

This is the official Fuller SST I use to get the pistons back into place. The "v" indents nee to be parallel to the ground to match with the protrusions on the back of the brake pad.

Image

You aren't damaging any sealing surface using the pliers as the piston seal is below the the dust seal and the piston is a smaller diameter at the top. Any marks left help to remind you which SST you used last time too! :shock:
See ya
Simon
AW11 Racecar - 860kg
Top
Mikew
Club Member - MR2OCNZ
Posts: 150
Joined: Wed Apr 06, 2005 8:59 pm
Stomping Ground: Wellington
Prime Mover: AW11
First name: Mike

Re: Aw11 rear pads replacement problem

Post by Mikew »

Ha ha, thanks Simon, didn't try those cause I didn't want to damage sealing surface. I'll have a hack tomorrow with those.
Cheers
AW 11, 84na, 85na, 87sc targa auto, 87 sc hardtop manual,
SW 20 91 Auto, another SW 20 TT
1's never enough
Top
User avatar
*84vvt
Life Member - MR2OCNZ
Posts: 2557
Joined: Sun Jun 06, 2004 11:44 am
Stomping Ground: Wellington
Prime Mover: AW11
First name: Colin

Re: Aw11 rear pads replacement problem

Post by *84vvt »

If your stuck I will have some spares floating around here some were could swap broken for unbroken . :-)
Boosted cars are like hot women.
A little edgy, every guy wants one,
some guys can't handle them,
and if you throw a little alcohol in them they'll rock your world.

Image
Top
Mikew
Club Member - MR2OCNZ
Posts: 150
Joined: Wed Apr 06, 2005 8:59 pm
Stomping Ground: Wellington
Prime Mover: AW11
First name: Mike

Re: Aw11 rear pads replacement problem

Post by Mikew »

Thanks Colin, I'll give you a yell if I break anything. Cheers
AW 11, 84na, 85na, 87sc targa auto, 87 sc hardtop manual,
SW 20 91 Auto, another SW 20 TT
1's never enough
Top
User avatar
GDII
Forum Moderator - MR2OCNZ
Posts: 5739
Joined: Sun Jul 10, 2011 5:13 pm
Stomping Ground: Wellington
Prime Mover: SW20
First name: Phill

Re: Aw11 rear pads replacement problem

Post by GDII »

I found if you wind them out a bit they free up. Only maybe a quarter turn, not too far or they will come out. As you turn them back in push as well. I have one of those cubes but doesn't work that well as none of the sides fit the SW20 or the AW11 properly. Pliers work too.
You can see in this link there are a whole lot of parts inside the rear calipers of this type. Not the best design with an incorporated handbrake.
http://jp-carparts.com/toyota/partlist. ... 9&fig=4707
1990 SW20 MR2 G-Limited (GEN4 3SGTE Installed)
2000 AE111R Corolla Wagon NZ New Daily
1996 AE101R Corolla Sprint NZ New Selling Soon
1990 EP81 Starlet XL (Sold)
1990 EE90 Corolla XL (Sold)
Instagram https://www.instagram.com/sw20glimited/
Top
Mikew
Club Member - MR2OCNZ
Posts: 150
Joined: Wed Apr 06, 2005 8:59 pm
Stomping Ground: Wellington
Prime Mover: AW11
First name: Mike

Re: Aw11 rear pads replacement problem

Post by Mikew »

Thanks for the help guys, Simons special tool worked a treat. Back on the road and stopping just like a real one.
Cheers
AW 11, 84na, 85na, 87sc targa auto, 87 sc hardtop manual,
SW 20 91 Auto, another SW 20 TT
1's never enough
Top
Post Reply

Return to “Tech - Mk 1- AW10 & AW11”