Hi Marc
Below is a copy and paste from a previous response to a similar question. I
assume from the year the box would have a J type O/D fitted.
I hope this may help you.
Have you done all the usual checks fluid / leaks?
Do you have A or J-type O/D as this makes a difference. Apparently the A has
to loose less oil than the J before it stops working due to the difference
in the pick up point for the pump.I have an A type that takes minutes to
engage (too damn cold to care about
it) but last time I looked I found the filter was clogged right up, turned
out just like a sand castle. The PO had the box built by an expert and the
pratt must have used two or three tubes of Blue Hylomar!! I also had a
problem with a J type O/D when the solenoid innards started to unscrew,
after a few weeks it started to drive as an auto and about 5 minutes later
it didn't go at all. As my A type has never worked right I cannot vouch for
those but my J comes in like a rocket even at slow speeds. A friend of mine
recons the A should be faster than a J, I recon it would have to be
psychic!!
Graham.
----- Original Message -----
From: M.Hesselink <M.Hesselink@chello.nl>
To: <spitfires@autox.team.net>
Sent: Tuesday, May 09, 2000 6:25 AM
Subject: O/D trouble
>
> Hi All,
>
> Unlike some other people I try not to clog all your mailboxes with
> unnecessairy and uninteresting emails, but now I have a real problem I
> need your help with...
>
> About three years and 10,000 kms ago I fitted a new overdrive gearbox to
> my '79 Spitfire 1500. Being British-made of course the gearbox leaks
> oil. I usually need to top up twice a year. I used to know the box
> needed a top-up because the overdrive would take longer to engage.
> Once the box was full again, the O/D worked fine again....
>
> Not anymore. Lately the O/D has becoming slower while the gearbox oil is
> on level. If I flick the switch, it sometimes takes minutes before the
> O/D engages, sometimes it won't engage at all. And if it does, it takes
> ages. It feels like I'm driving with a slipping clutch for several
> seconds...
> Once it is engaged it works fine.
>
> What can be the cause of this? Is there something I can do without
> having to take the whole gearbox out again? Maybe a different grade of
> Gearbox oil? Right now I'm using standard EPA 90, as recommended by all
> the manuals...
>
> Thanks for your help,
>
> Marc Hesselink
>
> For those who care:
> '79 Triumph Spitfire 1500
> '74 Triumph Dolomite 1850
> '69 Peugeot 204 Saloon
>
>
>
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