Results 1 to 6 of 6

Thread: Caliper “dog bone” shims

Discussions of Triumph motor cars

  1. #1
    Luke Skywalker mrv8q's Avatar
    Join Date
    Jan 2005
    Location
    Los Angeles, CA USA
    Posts
    1,738
    Thanks Thanks Given 
    1
    Thanks Thanks Received 
    1
    Thanked in
    1 Post

    Caliper “dog bone” shims

    2C28FB8F-C583-4B84-9A09-9B03E24A6F16.jpgHello, all, I’m returning the front disc calipers to the car, after having them rebuilt.

    When I first pulled them off, I didn’t notice there were 2 pairs of 4 1/2 inch “dog bone” -shaped shims on each wheel. I guess the accumulated grease held them to the caliper bracket; I noticed them on the ground after pulling off each caliper.

    Looking at the Haynes TR 2 3 4 manual, there is no mention of them in the 11.10 diagram.
    I figure they go on either side of the caliper, between the dust shield and the caliper bracket.

    How necessary are these? It is a PITA to keep everything aligned as above; so far I haven’t been able to keep all the pieces together to assemble. Right now I loosely have the caliper back on without the shims. The disc/ rotor spins freely, no brake pads in yet.

    What I really can’t figure out is that this is my second time addressing the calipers; the first was back in 2005, and I have no memory of dealing with these little buggers.

    So, leave them off, or figure a way of aligning all the parts? Thx.
    Last edited by mrv8q; 03-13-2018 at 07:51 PM. Reason: Added pic
    Best, Kevin Browne
    '59 TR3A #TS58370L
    Look for The Curse of Oak Island on The History Channel

  2. #2
    Yoda Geo Hahn's Avatar
    Join Date
    Sep 2001
    Location
    Mt Lemmon, Arizona
    Posts
    9,277
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    7
    Thanked in
    7 Posts

    Re: Caliper “dog bone” shims

    I believe you use them to mount the caliper so the disc is centered in the caliper opening -- in other words 'as needed'. I had some shims but also made a couple more the last time I did this.

    ...so far I haven’t been able to keep all the pieces together to assemble.
    I tied the shims in place using dental floss. Strong stuff but very thin and so slippery that once everything is bolted up the floss can be cut and pulled out.

  3. #3
    Luke Skywalker mrv8q's Avatar
    Join Date
    Jan 2005
    Location
    Los Angeles, CA USA
    Posts
    1,738
    Thanks Thanks Given 
    1
    Thanks Thanks Received 
    1
    Thanked in
    1 Post

    Re: Caliper “dog bone” shims

    Quote Originally Posted by Geo Hahn View Post
    I tied the shims in place using dental floss. Strong stuff but very thin and so slippery that once everything is bolted up the floss can be cut and pulled out.
    Geo, that is brilliant! Thx for making my night!
    Best, Kevin Browne
    '59 TR3A #TS58370L
    Look for The Curse of Oak Island on The History Channel

  4. #4
    Yoda TR4nut's Avatar
    Join Date
    Jan 2006
    Location
    Nacogdoches Texas
    Posts
    3,854
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    1
    Thanked in
    1 Post

    Re: Caliper “dog bone” shims

    Agreed, very clever!
    Randy
    70 TR6 - running
    59 TR3A - slumbering
    64 TR4 - got another one!

  5. #5
    Luke Skywalker mrv8q's Avatar
    Join Date
    Jan 2005
    Location
    Los Angeles, CA USA
    Posts
    1,738
    Thanks Thanks Given 
    1
    Thanks Thanks Received 
    1
    Thanked in
    1 Post

    Re: Caliper “dog bone” shims

    Following up on Geo’s brilliant suggestion. His idea worked just great; what was a fiddly PITA, turned into an uneventful 2 minute mechanical presentation to the car, as Haynes says.

    Each of my “dog bone” shims were a pair. I did wind up taping each of the pair of shims together, which I think helped in the final assembly. My wife is the floss assembler, and within a minute, the caliper is mounted to the car.

    Geo, again my thanks!
    Best, Kevin Browne
    '59 TR3A #TS58370L
    Look for The Curse of Oak Island on The History Channel

  6. #6
    Yoda Geo Hahn's Avatar
    Join Date
    Sep 2001
    Location
    Mt Lemmon, Arizona
    Posts
    9,277
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    7
    Thanked in
    7 Posts

    Re: Caliper “dog bone” shims

    Aw, shucks.

    Glad it worked well for you.

  7. The Following User Says Thank You to Geo Hahn For This Useful Post:

    mrv8q  (04-02-2018)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •