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

[wjohnson]

Chris,
It is standard procedure to ream piston pin bores.  Don't try it with a
hone.  The bore will get tapered .  A machine shop will be able to bore
them very easily.  Take the pin with you and they'll make it fit.
Merle

-----Original Message-----
From: Chris C <jdnutinwa at yahoo.com>
To: ATIS LIST <antique-johndeere at lists.antique-tractor.com>
Date: Mon, 27 Dec 2004 18:50:50 -0800 (PST)
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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