JowettTalk

When the clutch is depressed on my Jupiter, at the point of foot pressure a constant”rotational noise” is present until the clutch is released
I am suspecting that the clutch throwout bearing needs replacing but can not find any technical information on how to do this. Can anyone direct me to technical know how, or advise me from personal experience ?

Have a look in the technical library. There is a list of manuals. The maintenance manual and spare parts list is what you need.
There is much discussion on JT about clutch issues. The noise may not be the bearing of course. Perhaps take an audio recording and post link on here to identify.
Normally it is easier to remove engine and gearbox to fix.

Back in 1963 my Jupiter suffered a clutch problem near a little place called Contin in Scotland. A kindly garage proprietor took pity on us and let me carry out the work with the car on his hoist. With a fair bit of fiddling, and a number of cups of coffee, I managed to wriggle the gearbox rearwards far enough to get the clutch assembly out. The proprietor ordered a new clutch disc from Glasgow and it arrived in two days, while waiting, the throw-out bearing was re-packed with grease. We were soon on our way again, total cost of repair was 35 shillings!

If the car has been fitted with an over-drive, or another make of gearbox, the engine would have to be removed to access the clutch.

Mike Allfrey.

That is really interesting Mike as in my 50 years of Jowett motoring I never thought it possible. See you in a few weeks.

I should qualify my action a little. The gearbox did not come right out, it was still 'hanging' on its first motion shaft. If I remember correctly, I had drained the oil and, once clear of its mounting studs, rotated the gearbox after disconnecting the gear change linkage. The floor was rotten, the body frame was sort of flexible due to rust. But it was possible!

The splined hub in the friction disc had broken loose, giving us no drive. The new disc was inserted between the flywheel and the clutch plate and the six setscrews were installed one by one, just so far that the assembly could be rotated. then I 'centred' the disc with a hammer and flat drift. Then with a good wriggling and push, suddenly the gearbox thunked home satisfyingly and all was finished off. The garage fellow was very impressed and went to tell the bed and breakfast lady we would be on our way to the Isle of Skye. If anyone remembers a moteley red Jupiter in the area, it was us! I had effected a similar repair on a tractor previously.

We motored on to John O'Groats, but trying to reach the most northern point, and having held the map a certain way, decided that Dunnett's Head was our real destination. Then it was all downhill back to Bristol!

Sorry, can't post a photo. Will send separately.

Mike A.
P.S. Not sure about the spelling corrections on this forum, so have left them alone.