[AJD] JD A s/n 607821Piston Pin Bushing Troubles

[Bruce Mahr]

Chris: You just need to hone the bushing for the oversize pin to fit. I 
caution you on using the brake hone, as it is almost impossible to hone the 
bushing perfectly true with the brake hone. A pin hone machine with a 
mandrel and a long stone is the only true way to hone it properly.

Bruce Mahr
----- Original Message ----- 
From: "Chris C" <jdnutinwa at yahoo.com>
To: "ATIS LIST" <antique-johndeere at lists.antique-tractor.com>
Sent: Monday, December 27, 2004 8:50 PM
Subject: [AJD] JD A s/n 607821Piston Pin Bushing Troubles


>
> I thought I would spend some time working on my Many
> A projects today.  I thought I would work on changing
> out the 090 pistons in the 48 A for the .045 pistons
> that match my replacement block.
>
>   The pins came out of the 090 pistons and the 045
> pistons just fine.  However,  the pins from the .045
> pistons didn't want to fit the rod bushings.  After
> some careful work with the Micrometer they might by
> .003 bigger but it's hard to be that accurate with my
> digital mich.  So off to the parts book to study up on
> the problem.
>
>    The book (pc675) lists 3 Piston Pin options,
> Standard,  .003 and .005 One marked with red, the
> other yellow.  Hmm..   Back to the workbench.  Ah Ha!
> Red marks on the .045 pins.  back for more studying..
> RATS only one piston pin bushing listed.  So, the
> question,
>
>     Does Deere or anyone else offer .003 and .005
> bushings?   I have heard of having to ream out pin
> bushings.   I went out and bought a Brake Cylinder
> Hone and am planning on honing the little suckers out
> but before I go crazy on them I am wondering if anyone
> has a better idea?
>
>                        Chris
>
>
>
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