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Author Topic: Mini clutch  (Read 4323 times)

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The Sheriff

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Re: Mini clutch
« Reply #15 on: 06 February 2015, 13:08:29 »
Quote from: aaronjb on 06 February 2015, 13:05:03
Yeah, that picture looks like it's missing parts 15, 17 & 18 from this list, to me: http://www.rimmerbros.co.uk/Item--i-GRID000968

(The larger picture makes it much clearer where they should go)

Come to think of it the picture looks like it's missing the clevis pin that links the clutch lever to the slave cylinder?
That's cause he took it out, you muppet  ;D
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aaronjb

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Re: Mini clutch
« Reply #16 on: 06 February 2015, 13:09:23 »
Fair point.. safe to assume he also removed the return spring assembly, I suppose.
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The Sheriff

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Re: Mini clutch
« Reply #17 on: 06 February 2015, 13:11:37 »
Quote from: aaronjb on 06 February 2015, 13:09:23
Fair point.. safe to assume he also removed the return spring assembly, I suppose.
Probably, but you never know these days... ;D ;D
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Matchless

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Re: Mini clutch
« Reply #18 on: 06 February 2015, 14:46:46 »
Thats got a much later version of clutch than the Mini I used to maintain weld daily.
If it was restored in the past, do you know if the clutch pedal ever did return to the top properly? There are various sizes of master and slave cylinder over the years.....could wrong mix of bits have been used?
The big nut and lock nut on the end of the clutch cover was for adjusting the 'clutch throwout', or more accurately, to compensate for the variations in machining that crept in between Monday and Friday. That adjustment has to be right for the clutch to behave properly.....but I cant remember what you set it to.
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Marks DTM Calib

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Re: Mini clutch
« Reply #19 on: 06 February 2015, 16:53:24 »
Is the clutch pedal return spring ok?

Hydraulic hose ok and not collapsing?
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TheBoy

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Re: Mini clutch
« Reply #20 on: 07 February 2015, 09:23:56 »
I know its a "Verto" clutch.

Should there be springs on pedal and one the actual clutch end?

I think there is some kind of spring in the slave cylinder, as it has a natural tendency to push the piston out.

TIA.

Off to have another look in daylight in a minute.
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Andy H

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Re: Mini clutch
« Reply #21 on: 07 February 2015, 10:16:45 »
Trying to stir the brain cells to remember what was particularly 'odd' about the mini clutch :-\

Something about the clutch being the 'wrong' side of the flywheel because of the drive gear down to the gearbox ? :-\

IIRC the flywheel needs to be pulled off a very tight taper on the and of the crankshaft to get to the clutch. Also there is a thrust bearing (on the crankshaft?) that is prone to failure which screws up the clutch free play when it fails? :-\
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Andy H

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Re: Mini clutch
« Reply #22 on: 07 February 2015, 15:05:40 »
OK

The thrust bearing isn't the Achilles heel I was thinking of (that was on the Triumph Herald & Spitfire engine).

In the mini the clutch release arm has a ball end that engages with a hole in the release plunger. Over time the ball and hole in the release plunger wear leaving too much slack for the slave cylinder to take up.


Clutch lever arm short verto


Clutch plunger verto
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TheBoy

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Re: Mini clutch
« Reply #23 on: 07 February 2015, 17:57:27 »
Quote from: Andy H on 07 February 2015, 15:05:40
OK

The thrust bearing isn't the Achilles heel I was thinking of (that was on the Triumph Herald & Spitfire engine).

In the mini the clutch release arm has a ball end that engages with a hole in the release plunger. Over time the ball and hole in the release plunger wear leaving too much slack for the slave cylinder to take up.


Clutch lever arm short verto


Clutch plunger verto
Thanks Andy H, my googling had returned similar things about wear on those components :y.  Although these have been relatively recently replaced on this car when it was restored :)
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TheBoy

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Re: Mini clutch
« Reply #24 on: 07 February 2015, 17:58:07 »
Thanks all, really appreciate the help :y

Went over there today, in daylight, job jobbed :y
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aaronjb

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Re: Mini clutch
« Reply #25 on: 07 February 2015, 18:53:11 »
And the fix was?
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The Sheriff

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Re: Mini clutch
« Reply #26 on: 07 February 2015, 18:56:21 »
Quote from: aaronjb on 07 February 2015, 18:53:11
And the fix was?
He's not telling, nor about his MOT failure. He likes playing hard to get. Pretend you don't care, then he'll cry. ;D
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TheBoy

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Re: Mini clutch
« Reply #27 on: 07 February 2015, 19:46:40 »
Quote from: aaronjb on 07 February 2015, 18:53:11
And the fix was?
Ah, yes, good point well presented. Excuse me, I've been nursing a bad headache, following last night's escapades in town  :-[

Pinpointed fault to pedal, so freed all that up, cleaned and regreased, sorted. Broke the brake switch in the process, 'dangle berries'.
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TheBoy

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Re: Mini clutch
« Reply #28 on: 07 February 2015, 19:47:49 »
Quote from: STMO on 07 February 2015, 18:56:21
nor about his MOT failure.
Too frekking right.  I wouldn't have mentioned the air freshener thing a few years ago, but Marks "big gob" DTM had already done it before I got home ;D
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Grumpy old man

The Sheriff

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Re: Mini clutch
« Reply #29 on: 07 February 2015, 19:52:43 »
Quote from: TheBoy on 07 February 2015, 19:47:49
Quote from: STMO on 07 February 2015, 18:56:21
nor about his MOT failure.
Too frekking right.  I wouldn't have mentioned the air freshener thing a few years ago, but Marks "big gob" DTM had already done it before I got home ;D
I see. You mean that handsome Mark fella who likes to share with his good friends on the forum? ;D
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