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Triumph Torque    Cars    Herald/Vitesse  ›  Gearbox release arm and bearing confusion
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October 14, 2017, 10:40am Report to Moderator

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I'm putting an alloy bellhousing onto a 1200 Herald gearbox and converting to diaphragm clutch. The original car was coil spring however the assembly was stripped down ages ago to replace the pivot pin and so the release arm and bearing could be any one of a number of spares. I'm replacing the flywheel and slave cylinder too, but that's no problem so far.
I have two potential release arms and bearings; one bearing is curved and the other flat, while my new replacement bearing is also flat and came with a diaphragm clutch kit. I presume the one that came with the kit is for that clutch, as it's an old boxed set from an autojumble many years ago.
However the actual bearing mountings differ by a considerable difference:  see the photo. The wrong mounting will obviously affect the clutch operation, so which one is correct for the diaphragm setup?

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If it was made by man, it can be dismantled and rebuilt by man. Usually just not as easily.
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October 14, 2017, 11:54am Report to Moderator

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Apologies, thanks to BT Broadband's wonderfully reliable service I was unable to edit the above post - the new bearing is the same as the curved one to the right in the top photo.
I'm assuming that this mounting is correct for this style of bearing and so is the one I can fit?
(Incidentally how on earth do you get the bearing off it?

If it was made by man, it can be dismantled and rebuilt by man. Usually just not as easily.
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Mark Hammond
October 14, 2017, 12:50pm Report to Moderator

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I thought that the flat one was for the coil spring and the bevelled one for the diaphragm type, but I could be wrong.....  Undo the slots, take the bearing off the carrier and drift it off the sleeve?  It's been a while since I've had one apart.


Herald 1200 Saloon, owned (in the family) from new, Royal Blue/Black trim
[color=purple]MX-5 Z-Sport (Tweaked to 200bhp)2007,
Suzuki Vitara S Auto, Cosmic Black, 2017.
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Nick Jones
October 14, 2017, 1:56pm Report to Moderator

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Curved one for diaphragm, flat one for coil sprung.

Pretty sure the carrier length is different too.  Don't know which is correct.  It's been on here before though and answered by Bill Davies......


Nick Jones
Somerset UK

Vitesse Mk 1.5 Convertible EFI, Survivor of RBRR 2008, HCR & 10CR 2009, HCR 2010, 10CR2011, HCR 2012, 10CR2013, 10CR2015, HCR 2016 & HCR 2017.
GT6 Mk3 Roto - project in progress
Spitfire MKIV son's project now on the road as a daily driver
2.5 PI Saloon now EFI (PIe?), Engine rebuilt and running sweet.  Diff howling...... Survivor of HCR 2013 & 2014 Gone to live in Swansea
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October 14, 2017, 3:47pm Report to Moderator

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Thanks Nick and Mark, hopefully got it sorted. The bearing carrier is longer for the coil setup with the flat bearing; the curved bearing and shorter carrier are for the diaphragm unit. The release arm should hopefully be the same in both.
The bearing pressed off surprisingly easily; the new one also went on with very little pressure. I didn't want to start pressing it off only to find there was a dowel or pin that I had forgotten about.... it happens.

If it was made by man, it can be dismantled and rebuilt by man. Usually just not as easily.
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