[Fot] Type A OD leaks

[Nick Black]

Greg etal,Remove the bolts holding the plate to the trans and deposit them in the nearest trashcan!The torque figure on those bolts is something like 20 or 25 pounds and at 26 pounds they stretch. You will find the bolts neatly wired and loose as the forces of the od engaging stretches them, and then the leaking starts.I use internal socket head bolts (to get the small head) and drill them for safety wire. The bolts are much higher strength and do not stretch...no more leaks.
clean floors in norcalnick    On Sunday, November 7, 2021, 05:12:33 PM PST, Steve Yott via Fot <fot at autox.team.net> wrote:  
 
 I always use new Lockwell screws sold only by Rimmer Bros.  These have the small 7/16" head a built in flat washer and pre-applied thread locker.  Never had these back out.
The adapter plates are a normal source of leaking especially on the bottom with only two  bolts spaced 6" apart which is too far.  The Healey adaptors have a third bolt in the middle and much easier to keep dry.


Steve Yott

-------- Original message --------From: Dean via Fot <fot at autox.team.net> Date: 11/7/21 5:08 PM (GMT-06:00) To: Greg Blake <gblake58tr3 at icloud.com>, Fot <fot at autox.team.net> Subject: Re: [Fot] Type A OD leaks 

The early one’s always had the bolts for the adapter plate safety wired. I always safety wired all the bolts on transmissions I rebuilt.

Make sure they are wired in the correct direction. There is a right and wrong way to run them.

 

Dean T.

 

 

Sent from Mail for Windows

 

From: Greg Blake via Fot
Sent: Sunday, November 7, 2021 5:50 PM
To: Fot
Subject: [Fot] Type A OD leaks

 

I removed my TR6 type A OD box out of the TR3 race car today. It was removed because the last time on track, it was leaking badly. 

 

To my surprise, I found that the OD adapter plate was very loosely attached to the rear of the transmission, in fact two bolts had completed backed out and I found them when I removed the accumulator piston cover. Upon further disassembly I found that all of the adapter bolts were loose. 

 

When I built this transmission 2 years ago, I used red locktite on all of these bolts. I also had use the thin gasket with hylomar. Has anyone every seen these bolts back out like this before?  Any suggestions on repair work to make sure this doesn’t happen again?

 

I’m thinking of drilling all bolt heads and safety wiring all of the.  Have also thought of using helicoil on all of these since they are threaded into aluminum. 

 

Appreciate all thoughts on the mater. 

 

Greg

 

Sent from my iPhone

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