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TR4A diff thrust button

To: triumphs@autox.team.net
Subject: TR4A diff thrust button
From: emanteno@ix.netcom.com (Irv Korey)
Date: Fri, 22 Mar 1996 14:39:05 -0800
Hi all,

My TR4A solid axle has a limited slip differential, which I think is a 
Salsbury. I recently took the diff and housing out of the car to 
replace the seals. Resting inside one of the axle tubes (the axles were 
already removed) was a piece that I have since identified as the thrust 
button.

On a standard diff, the thrust button rides on a shaft that goes thru 
the differential carrier. The thrust button is supposed to be centered 
between the axles. Moss Motors sell a LSD (I think it is a Quaiffe), 
they say in their catalog that the thrust button is not used when the 
LSD is placed in an irs car, but that it is used in a solid axle car.

There does not seem to be a shaft for the thrust button in my LSD, or a 
place for the shaft. Could the PO have just put the thrust button in 
the differential and let the axles keep it in place? If the thrust 
button is not retained by the shaft, is it serving any purpose? Thanks 
in advance for all help and advice. Any replies over the weekend, 
please respond to the list or the email address below. Thanks again,

Irv Korey
emanteno@usa.pipeline.com on the weekends

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