www.imoc.co.uk Forum Index
 AlbumAlbum CalendarCalendar FAQFAQ SearchSearch MemberlistMemberlist Legal NoticeLegal Notice IMOC 1/4 Mile1/4 Mile Table Knowledge BaseKnowledge Base   RegisterRegister 
 GarageCommittee GarageGarage  SubscriptionPremium Membership  ProfileProfile   Log in to check private messagesLog in to check private messages   Log inLog in 
Calendar 
what size are the bolts holding the brake caliper on the rear?

 
Post new topic   Reply to topic       www.imoc.co.uk Forum Index -> MR2 MK2 1990 - 1999 NA & Turbo
View previous topic :: View next topic  
Author Message
mr2_maverick




Joined: 10 Jan 2017
Posts: 76

Feedback Score: 0



PostPosted: Sat Sep 09, 2017 12:21 pm    Post subject: what size are the bolts holding the brake caliper on the rear? Reply with quote Reply with quote including images

Hi guys,

I tried to replace the rear brake disc and pads on my car today and I couldn't get the two bolts off that hold the part of the caliper where the pads slide in. As I understand it there are three bolts that need to be removed, the 12mm which lets the caliper slide up and then the two bigger bolts to get the whole caliper off the disc.

Is it a 17mm? I tried to fit a 16 mm which was too small and an 18 mm which was too large. Do I even need to take this part off? The outer brake pad was easy to remove, it is just the inner brake pad that wont come off so I thought I need to remove the rest of the parts too?

This is what I am talking about: http://www.mr2turbo.info/pics/cropped/1987reartorqueplate.jpg

Also does anyone know what size is the bolt you can screw in to force the discs off ? I am sure my disc is locked into place by rust between the hub and disc. Thanks.
Back to top
User is offline 
tehdub
Premium Member



Joined: 16 Mar 2015
Posts: 51
Location: London
Feedback Score: 2

1990 Toyota MR2

PostPosted: Mon Sep 11, 2017 12:03 pm    Post subject: Reply with quote Reply with quote including images

Hi Maverick,

You won't be able to get the discs off with out removing the caliper bracket, and they are 17's yes. They can be right pain to get off. Impact tools are your friend if you have them. If not, patience, heat, and WD 40 usually work.

Breaker bars to crack them off will work if you have the room. There's also the poor man's breaker bar, ratchet with a long collar socket and extension bar on the end, or the poor mans impact wrench, a ring spanner on the bolt and a hammer to knock it free, or a centre punch on the edge of the nut. All are health and safety nightmares but do work.

Try not to chew them up, as the are hardened steel and are xxxxxx to cut through (Ask me how I know)
Back to top
User is offline 
Gazza_DJ
Premium Member



Joined: 29 Nov 2010
Posts: 3058

Feedback Score: 11

1997 Toyota MR2 Mk2 NA Rev4

PostPosted: Mon Sep 11, 2017 1:16 pm    Post subject: Reply with quote Reply with quote including images

Soak in plusgas and leave over night.

Don't use 12 point sockets, use a good 6 sided hex socket. Apply a little heat if needed, but be careful of your wheel bearings and driveshafts.
Back to top
User is offline 
Hez
Premium Member



Joined: 25 Dec 2007
Posts: 272
Location: Pontefract
Feedback Score: 7

1994 Toyota MR2 Mk2 Turbo Rev3

PostPosted: Mon Sep 11, 2017 1:59 pm    Post subject: Reply with quote Reply with quote including images

Never had any bother getting them off with Plusgas, a 17mm ring spanner and a hammer to shock it free.
Back to top
User is offline 
tehdub
Premium Member



Joined: 16 Mar 2015
Posts: 51
Location: London
Feedback Score: 2

1990 Toyota MR2

PostPosted: Mon Sep 11, 2017 9:19 pm    Post subject: Reply with quote Reply with quote including images

All good advice above.

Re. the discs being rusted to the hub, pretty standard. I don't know of a screw to release the disc. There should be two screws securing the disc to the hub, but these are often missing or rusted away with the remnants of a screw in them.

I just smack the disc with a hammer to free it off. A dead blow is best, but a regular hammer will do (Use ear plugs). Damaging the disc isn't a concern as you are changing it anyway.

Tee
Back to top
User is offline 
Display posts from previous:   
Post new topic   Reply to topic       www.imoc.co.uk Forum Index -> MR2 MK2 1990 - 1999 NA & Turbo All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group