[TR] Speedometer drive in J-type OD

[Sujit Roy]

I have a j type on the stag and no brackets are in the way. U can get to
it. Oil will come out not sure how much. Change two o rings while u have it
out. Google the no. Of teeth for the 6. I have a j type for a dolomite
sprint and had to swap out the gear. .

 The no. Of teeth were different as well as the length

Just fty. At the end of the OD is a stamped. On the Stag and sprint are 6
start. This is the no. Of threads on the big gear in the OD.

Sujit



On Mon, May 27, 2019, 8:38 PM Mark Hooper <mhooper at indiefilmnet.com> wrote:

> Hello oh List:
>
> My 72 TR6's speedometer has stopped working completely. It was jumping
> more and more wildly and now is completely dead. Since the cable seems to
> turn freely in the casing I'm pretty certain the drive gear down below has
> just lost too many teeth to engage. Memory tells me the drive is plastic. I
> have a J-type OD in my car. I ordered it built up by the Laycock de
> Normanville descendants who work (I am told) with the original tooling. I
> had it done with the Volvo gearing (1.25). Three questions:
>
> 1 - Can I pull the gear out without having to remove the OD ? It looks
> like it's removable.
>
> 2 - Will I end up with a flood of transmission oil all over the place.
> i.e. should I drain it first?
>
> 3 - How do I count/measure to know which replacement gear to buy?
>
> Thanks in advance for any helpful advice out there.
>
> Mark Hooper
> 1972 TR6
>
>
>
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