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[Re:] Brake Tools & Cyl Hones for Spitfire

To: sean_johnson@milacron.com, triumphs@autox.team.net
Subject: [Re:] Brake Tools & Cyl Hones for Spitfire
From: "jpratchi" <jpratchi@isdlink1.ess.harris.com>
Date: Tue, 17 Oct 95 12:55:05 est
Sean wrote:
    
>I was installing a new set of rear wheel cylinders and shoes on my 
>Spitfire last night, and realized I don't have the square wrench for the 
>brake adjusters.  After struggling forever to get all those *&%$ springs 
>back in place, I was too tired to try and wing it with the vise 
>grips-Probably a wise decision.
>In the interests of using the right tool for the job: Is the wrench for 
>the adjuster something standard I can pick up at Sears, or is it some 
>oddball size?  What size is it?

     I use a 1/4" socket size 1/4 Hex backwards on a 1/4" Allen wrench 
adaptor on a 1/4" socket wrench.

     Socket    Allen Socket  
       |             |
       |             |
       V             V   /---\
    +------+       /---+ |   |
    |      |------/    |-|   |
    |      |------\    |-|   |
    +------+       \---+ |   |
                         \   /
   ^        ^             | |
   |        |             | | < Socket Wrench
 Square    Hex            | |
  Side     Side           | |
                          | |
                          | |
                          | |
                          | |
                          \-/

>Also, I had to scrap a couple of rear wheel cylinders that were probably 
>saveable because I don't have a cylinder hone small enough to do something 
>only 1/2" in diameter.  Does anyone know where I can get a small cylinder 
>hone?  I haven't had any luck at the local auto stores.

     I have successfully used the following arrangement:

1.  Take a 1/4" or 3/8" dowel 8" long and cut a narrow slit in one end.

   +--------------------------+
   |                      =====
   +--------------------------+

2.  Get some 400 grit and 600 grit crocus cloth and some 1/4" foam.
3.  Cut a 1" wide strip of the crocus cloth about 6" long and insert it in 
the dowel slit.  Wrap it around the dowel a turn and then put a 1" by 1" 
piece of the foam and wrap it another turn.
4.  I put the dowel in a drill chuck on my radial arm saw (motor turned 
outward with blades removed)
5.  Oil the crocus cloth liberally with 20W50 Castrol or your favorite 
synthetic if you are of that religious bent.
6.  Holding the cylinder with gloves, carefully guide the end of the dowel 
into the bore, turn on the saw and "hone" carefully.  Move the cylinder in 
and out to distribute the "polishing" activity evenly.
7.  Clean out the oil with your favorite solvent and assemble with new 
internals.

   The result is a very smooth bore and when you finish with the 600 grit 
the inside will be well polished. The first time I used this on my clutch 
MC and slave, they were still good five years later!

   regards,   John Pratchios





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