TRNW-2: AX4S, o-ring the o-drive servo pin

[Fred Whitaker]

  I used to do this with a hacksaw as Pat said. I did it before we all had battery drills,and servobores.com.  Chuck the piston pin in a drill and put the drill in a vice and lock the trigger on (you now have a lathe,and something to steady your hands on).  You should be able to see on the pin where it has been riding on the case. Cut a groove just above the feed hole.  I used to use one of  those white 700 servo pin rings. (You will have to cut it to size) Cut the groove just deep enough to barely bury the ring.
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From: trnw2-bounces at trnw.net <trnw2-bounces at trnw.net> on behalf of Lee Hughes via trnw2 <trnw2 at trnw.net>
Sent: Thursday, May 22, 2025 8:55 PM
To: Wayne <wagarrick at yahoo.com>; Technical Discussion Forum <trnw2 at trnw.net>; pat schulte <zzyzxpat at gmail.com>
Subject: Re: TRNW-2: AX4S, o-ring the o-drive servo pin

Thanks Wayne, never done this before so trying to be cautious. where exactly on the pin does the groove cut go and how do you know how deep a groove cut needed? parts for these are getting scarce! thanks For any advice Lee
On 05/22/2025 9:00 PM EDT Wayne via trnw2 <trnw2 at trnw.net> wrote:


It’d be easy to do with a lathe and groove cutting insert.
Sent from my iPhone

On May 22, 2025, at 4:03 PM, pat schulte via trnw2 <trnw2 at trnw.net> wrote:

I have cut oring grooves in pins before with a hacksaw blade or cutoff wheel.

On Thu, May 22, 2025 at 12:57 PM Lee Hughes via trnw2 <trnw2 at trnw.net<mailto:trnw2 at trnw.net>> wrote:
Date: Thu May 22 12:56:45 PDT 2025
Subject: AX4S, o-ring the o-drive servo pin

Hello Everyone , I would like to add an o-ring to the 0-drive. servo pin. I looked everywhere for chuck stansy # to get in touch with him as he said he has done this several times any way has anyone else ever done this modification that I could ask a few questions to. The trans is in the car and I would like to avoid pulling it. Thanks have a nice day! Lee

Lee Hughes
Hughes Precision Automotive
Martinsville, Virginia USA
TRNW Member Since: 9/14/2007

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--
Pat Schulte
AAMCO Transmissions
Temecula, Ca.
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