Brad Kahler wrote:
>
> I recieved my OD yesterday and now have a few questions for those of
> you who either have one of these in their car or has seen one
> installed.
>
> There appears to be an extra switch mounted on the gearbox shifter
> cover on the left side. The one on the right is present and has the
> original factory bracket. The one on the left has what appears to be
> a bent piece of sheet metal as a bracket. The switch itself appears
> to be just like the one on the right side of the gear box. The
> unkown switch activates off the same activator lever. The lever
> appears to be correct and has two ears, one on each side.
>
> My main question is what is this switch for? Is it something that
> someone added on there on for some unknown reason? Is this a factory
> fix for something?
>
> Is the D type OD something that I could rebuild myself? I rebuilt
> the tranny on my Mk1 and it seems to be doing ok. Is the OD unit
> more complex or does it require tools that I wouldn't have access to?
>
> Any help would be greatly appreciated.
>
> TIA
>
> Brad (In Lincoln Nebraska 402-464-1502)
>
> 1964 Spitfire4 BFC25720L (In "Teething" Mode right now)
> 1966 TR4A CT72398L (Slowly gathering the needed parts)
> 1951 Dodge Truck 82217766 B-3-B-108 (Frame painted, now suspension)
Brad,
>From your description, it sounds like you are referring to the
overdrive switch. The plate sounds like some added the od
to a non-od box and made up a plate to be able to utilize the
3-4 enabler. There is a correct plate for this, it has the
mounts on both sides. There should be a fitting on the end of
the shifter rail that has a stub sticking down. Looks something
like a keyhole. When you go into reverse, it makes contact with
the switch on the right. When you select 3rd or 4th, it makes
contact with the switch on the left. (If you are confused, think
about the shifter position when in reverse or 3-4). This second
switch effectively locks out overdrive from being used in reverse,
1st or 2nd. Absolute no-no to use in reverse, will bugger up the
od faster than anything.
As to rebuilding the od yourself, there are some special tools,
and you might be able to take it on yourself. (How's that for
a non answer answer?) I took mine to a good mechanic, he had
it a good part of the winter, and guaranteed it.
Good luck,
--
Doug Mitchell
dmitchel@ismi.net
dmitchel@ford.com
'73 Spitfire 1500 with OD
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