Chris....
On a standard gearbox, the shape of the case has a smooth taper the the rear
where the output flange is. On an overdrive gearbox, there is a drum-shaped
unit (the overdrive) interposed between the main gearbox and the output
flange. This is recognizable by its being attached to the main case by a
ring of nuts which need a 7/16" wrench to undo them. It should also have a
plate somewhere on it marked Laycock de Normanville and a solenoid wire
either attached to a small, barrel-shaped solenoid (D-type o/d) or leading
under a rectangular plate (LH-type o/d).
Lawrie
-----Original Message-----
From: Chris Chandler <spawn@net-link.net>
To: mgs@autox.team.net <mgs@autox.team.net>
Date: Sunday, August 09, 1998 8:24 PM
Subject: Overdrive
>Are there any external distinguishing characteristics to an OD tranny?
>
>I thought the presence of two switches would do it (which I just found
>on pulling the mess out of my '72B), but in a past post to the list,
>Lawrie indicated that it could also be some sort of alarm buzzer or some
>such...
>
>When I pulled it out, one wire was broken off and the other disconnected
>from this second switch. The reverse switch has been functional since I
>bought the car.
>
>I guess another question that I might ask is if it is an OD unit, what
>color(s) would the wires be?
>
>Also, where would the OD switch be?
>
>Thanks,
>
>Chris
>'72B in 1,000,000+ pieces
>
|