19 replies to this topic

[KSTANDSTEVE]

Just fitted a new verto clutch assembly together with new release bearing on my 998 mini checkmate (1990)

The haynes manual says this is self adjusting. So is there nothing to do? No adjustment to the big nut on the end of the flywheel case?

Edited by KSTANDSTEVE, 15 July 2010 - 06:24 PM.

[mini13]

if theres a big nut on the end remove it,

A few pumps of the pedal should be all the adjustment you need.

[Robbie]

I just replaced the threaded push rod arm and short clutch arm, but didn't do the nuts up tight enough. Driving along a country lane I heard a massive PING then BANG, and knew instantly what it was. Looked under the bonnet and both had gone. Managed to retrieve one, but the other was lost for good. Went to local Mini specialists (he's raced Minis for 25+ years), and he said not to bother with the nuts at all, as all they do is wind up the thread in stationary traffic, leaving you with no clutch movement. I took his advice, and haven't had any problems since.

Not sure whether this is the best advice, but it's caused me no problems, and I think he knows what he's talking about.

[KSTANDSTEVE]

picture attached.

So I should remove the big nut/nuts?

[attachment=100690:IMG_2466.JPG]

[mini13]

yep just remove them, on a verto they really dont do anything.

[richrsmith]

Those nuts are the throw out stop and locking nuts and are there to stop you over pressing the pressure plate.
Agreed that in the case of the verto setup it shouldn't cause any problems without them but why stretch the pressure plate fingers more than they need to be?
I've always kept them fitted, adjusted to 6.5mm and nipped up tightly together and have never had a problem.

[Dan]

No adjustment no, but you have to set it up properly in the first place. Haynes also tells you that!

Fit the nuts.

[KSTANDSTEVE]

Think I will leave them on.

The 6.5mm where is that measured? Inside face of nut to housing?

[KSTANDSTEVE]

Just measured mine as it came out - and its 12mm! Guess this needs reducing?

[KSTANDSTEVE]

Anyone?

Have read the haynes manual and it says to adjust this whilst pressing the clutch pedal - trouble is my engine is out at the mo and dont have a clutch system. Can this be adjusted before I put the engine in or does it have to be done after using the clutch pedal method?

[Dusky]

Intrsted in this too, how did you solve it?

[Jordie]

Fit the nuts, adjust as per haynes. or risk wrecking your clutch/crank thrusts.

 

Adjust once fitted into the car with the clutch hyds connected and bled.

[Dusky]

Fit the nuts, adjust as per haynes. or risk wrecking your clutch/crank thrusts.

 

Adjust once fitted into the car with the clutch hyds connected and bled.

So you do need to adjust the 'self adjusting' verto?  *scratches head*

[Jordie]

They are their for a reason, fit the nuts, adjust as per haynes, tighten up (they tighten againist each other to lock). Never had any issues with them "winding up" the thread or any other related problems.

[Jordie]

The throwout stop has no effect on the point at which the clutch 'bites' It is to stop damage to the crankshaft thrust bearings in the event of the overthrow becoming too great.

To set the stops, which are 15/16" AF, you undo both nuts so that they are well clear of the casing. With a pre-Verto set-up, you then set the arm stop bolt, which is higher up on the casing and is 7/16" AF, clearance to 0.020" with the arm pulled as far away from the housing as it will go (with the clutch spring removed is easiest). Then when that is set, you push the clutch pedal right to the floor and hold it there. Whilst the pedal is to the floor you do up the inner overthrow stop nut until it just touches the casing. Release the pedal and turn the nut in a further 1/2 a flat (not half a turn!). Hold the inner nut in place and lock it there with the outer nut.

With a Verto the bit about the arm stop is irrelevant as a Verto is self-adjusting.
If the cluth wears it will disengage sooner, not with the pedal nearer the floor.

The overthrow stop should not need re-setting during the life of a clutch plate, unless the flywheel/clutch is touched or the release bearing changed. Always hold the inner nut with a 2nd spanner when tightening or loosening off those nuts or you risk snapping off the ball on the bottom of the arm.
One of the main problems with clutches is worn clevis pins and/or worn ball at the bottom of the clutch arm. On early ars the arms used to bend as well, but on later and on Verto-erquipped cars that's not an issue.
I hope this helps.

 

 

As above. Verto just required the throw out setting.

 

Eariler pre verto clutches needed the arm stop bolt adjusting aswell.