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MG Midget and Sprite Technical - Clutch slave cylinder arm

Hi,

Just in the process of changing my clutch slave cylinder 1275 gearbox but the new push rod i purchased seems significantly shorter that the old one , is this correct ?
It look as if the old one may have threaded into the slave cylinder piston but the new one buts against it is that correct , can anyone advise
Thanks
Andy

Andy Chaffey

Also clutch arm has a slight bend in it is this correct , again i can't remember or is it out of shape
cheers
Andy

Andy Chaffey

clutch plate wears and thrust bearing wears, so PO treads ever more heavily on the pedal, eventually bending the arm. Once bent it's bodged with a longer rod to get back to the right position. Find a straight arm before refitting!
David Smith

David,
Thanks as always for your help , just so i am clear , does the smaller rod look like for standard ? and if so i just find a straight arm and should be okay ?
cheers
Andy
Andy Chaffey

The new rod looks about right. I assume you ordered the one for a 1275cc engine? The 948 and 1098 ones are a different length.
Bob Beaumont

Andy the correct rod is 13H3655 and my spare measures 2-3/4" from eye centre to the end.
David Smith

Andy,

Found exactly the same when I stripped mine during the reshelling.
Needed as David has noted new arm and correct pushrod.

Check all the clevis pins/holes are not worn including the master cylinder end.

R.
richard boobier

Bob , David cheers just measured it , its the right one , will start the hunt for a straight arm tomorrow !! have one spare box so there might be a better one on that hopefully
Cheers
Andy
Andy Chaffey

with a bit of heat you can hammer it straight(er) - basic blacksmithing really. I've seen racers weld a length of square bar down the back of the arm to add rigidity.
David Smith

PS - if you get stuck for an arm I have a couple of spares....
David Smith

David, cheers , will have a look tomorrow and let you know
Andy Chaffey

Yes I've had this problem too

M J Chapman

So you put it on the barbie

M J Chapman

....and when its almost done, you persuade it gently back into shape with an engineer's hammer.
I did this as I was told the clutch arm was NLA.

M J Chapman

David,
Just mailed you
cheers
Andy
Andy Chaffey

This thread was discussed between 10/06/2012 and 13/06/2012

MG Midget and Sprite Technical index

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