The Triumph Dolomite Club - Discussion Forum

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PostPosted: Sat Jul 25, 2020 4:48 pm 
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Hi

I have had the problem of putting the engine and gearbox back into the car, and finding the clutch slave cylinder pin does not reach the pivot fork.
I found a previous posting on the forum where someone had the same problem, and it turned out to be, like mine that my new slave cylinder supplied by Rimmers is the wrong one!
The offset is too small, I read that the Girling slave cylinder (156604) is compatible with the Vitesse one,
Can someone please confirm this for me, and would that be the 1600 (p/n 514356) or 2000 (p/n516788) Vitesse?
Thanks
Darrell.


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PostPosted: Sat Jul 25, 2020 6:30 pm 
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Hi Ian

I did get a push rod for an HL, but that didn’t fit,
It’s a 1977 registered Dolomite and had the longer slave cylinder,
Is the 1600 Vitesse the correct one as the 2L seems to be 1”,
Also what’s the best way to extend the pushrod?

Darrell.


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 Post subject: Okay........
PostPosted: Sat Jul 25, 2020 6:35 pm 
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To be fair to Rimmers, they have supplied the correct cylinder for an 1850HL.
I have used a Sprint/2000mark 2 in place of a Vitesse one on an 1850 and it works.


What clutch components are you using?




Ian.

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 Post subject: Yes.....
PostPosted: Sat Jul 25, 2020 6:44 pm 
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this is a Vitesse type cylinder (on a Sprint).


You have the other version, Darrell?




Ian.

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PostPosted: Sat Jul 25, 2020 8:04 pm 
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Hi

Thanks for replying,
The original cylinder looks like that one with the long offset,
But the Push rod is different, mine has the small knob bit on the end which locates onto the arm,
The pushrod is 80mm long, And the cylinder is 40 mm from the front flange to the end where the rubber sits
I am using a Borg and Beck clutch,

Thanks
Darrell.


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PostPosted: Sun Jul 26, 2020 10:04 am 
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Hi Darrell, I suppose the release arm has located correctly on the pivot pin ? I remember a few years ago when I was helping with an 1850 clutch and it was getting late and we also had no clutch action yet the operating rod was fully forwards. The slave dust cover was bulging out ! We did notice that the release arm was sitting well back from its normal position and was floppy. The arm was not clipped over the pin , but was sitting on top of it, yet the release arm pins still engaged with the release bearing.
It was engine out again time!
The moral for me was to stop working when tired.
Since you are familiar with the Vitesse I imagine you have experienced the pivot pin on the Vitesse (and the 1850) breaking through the release arm pivot and giving a similar effect ?
Good luck with it,
Tony.


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PostPosted: Sun Jul 26, 2020 10:49 am 
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Thanks Tony

I checked the pivot point before the lever went back into the gearbox, also have checked the clip is in the correct position, Since fitting (gearbox cover off at the moment so easy to see)
There has been no pressure on the lever since the engine went back into the car, so cannot have broken through since.
I have been able to free the old slave cylinder so hopefully will be able to get the piston out later and rebuild it,
This might be the solution, will let you know.

Thanks again
Darrell


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 Post subject: Hi again....
PostPosted: Mon Jul 27, 2020 7:33 pm 
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Darrell,
please have a look at this thread......https://forum.triumphdolomite.co.uk/vie ... g&start=15
(it took ages to find but I knew I had posted the dimension)

on page 2, I stated the length of pushrod as 80mm,
which was on the 1850 where I had replaced the Vitesse type slave with a T2000 type and used the existing pushrod.



Ian.

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PostPosted: Wed Jul 29, 2020 9:01 pm 
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Thanks for looking IAN

I was able to free my old slave cylinder and rebuild it with a new seal, with my 80 mm push rod it all seems to work fine,
the one that I got from Rimmers was quite a bit shorter and there was no way that was ever going to work In my car
As your link states two different types of slave cylinder were fitted to Dolomite 1850s, If so it appears you can only get the shorter type from most suppliers .

Thanks everyone for your help.


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PostPosted: Fri Jul 31, 2020 10:24 am 
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In the past, I used a brass hinge pin to serve as a longer version of the 1850 clutch pushrod, at the time to use a different part of the internal lining of the slave for the travel.

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1973 sapphire sprint
1976 honeysuckle RHD sprint (for sale!)
1973 pimento (now BRG) 1850


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 Post subject: It is…….
PostPosted: Sun Aug 02, 2020 10:31 am 
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Quote:
Thanks for looking IAN

I was able to free my old slave cylinder and rebuild it with a new seal, with my 80 mm push rod it all seems to work fine,
the one that I got from Rimmers was quite a bit shorter and there was no way that was ever going to work In my car
As your link states two different types of slave cylinder were fitted to Dolomite 1850s, If so it appears you can only get the shorter type from most suppliers .

Thanks everyone for your help.
Good you found a solution Darrell
but I do not understand how is it is the 80mm push rod didn't work on your car though?



Ian.

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PostPosted: Wed Aug 05, 2020 5:16 pm 
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Image
Hi Ian

As you can see the new slave cylinder is a lot shorter than the original, Also the piston under the rubber on the new one has a greater indent so the pushrod sits even further back, therefore the pushrod will not reach the lever.
Hope this explains it.

Darrell.


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 Post subject: Aye.....
PostPosted: Wed Aug 05, 2020 5:51 pm 
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Quote:
Image
Hi Ian

As you can see the new slave cylinder is a lot shorter than the original, Also the piston under the rubber on the new one has a greater indent so the pushrod sits even further back, therefore the pushrod will not reach the lever.
Hope this explains it.

Darrell.
Thanks for the explanation Darrell,
so it is the piston that is the problem.

Presented with this situation,
I probably would have used longer bolts c/w spacers or extended the pushrod.



Ian.

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