[alfa] RE: [alfa] Transmission drive flange nut "spiking"?

["Jeff Greenfield" <alfaguy@xxxxxxxxxxxx>]

The later nuts have (had?) a flange on them. This flange faces away from the
transmission and towards the rear of the car.

Kinda something like this:

--
  |
   ---
 -------------> output shaft towards driveshaft
   ---
  |
--

The horizontal portion next to the shaft gets 'staked' to lock the nut to
the shaft. Basically you ding the flange with something like a dull center
punch to lock the nut to the shaft.

I believe that some of the earlier cars, although the shaft has the recess,
did not use the later style flange nut. I seem to recall having seen some
cars with two thin nuts here instead but can't recall for sure.

In either case, some red loctite would work well after cleaning the nut and
threads.

You can usually re-use the flange nuts about once, and that is about it,
unless you substitute loctite which works very well.

HTH,

Jeff


-----Original Message-----
From: owner-alfa@domain.elided [mailto:owner-alfa@domain.elided] On Behalf Of
Robert Watson
Sent: Thursday, March 25, 2004 11:14 AM
To: alfa-digest@domain.elided
Subject: [alfa] Transmission drive flange nut "spiking"?

Hi All,



The nut connecting the drive flange to the shaft at the rear of the
transmission on a 69 spider became loose. I am going to torque the nut
back up, but I am hoping someone can help me to describe the procedure to
lock this nut to the shaft so that it does not come loose again. It
does not appear that this locking was in place before.



Specifically there is a grove in the transmission shaft cut under where
the nut sits. I was told that somehow the nut or something is spiked
into the grove after it is torque to lock it?



Can someone give me a description of this technique?



Robert 69 spinder67 GTVNovato CA, USA

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