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 Posted: Jun 21, 2018 04:25AM
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Think i found the problem,slave cjy. LEAKING NEW ONE ON ITS WAY. Thanks for all the comments and help finding what the problem was.I knew the Mini diehards would come thru and  get a classic mini back on the road. Bob

 Posted: Jun 20, 2018 04:42AM
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US
fluid passes internally when the seals are bad and basically, you get no pressure when you step on the pedal.  Other places you might check are the back of the clutch pedal. Sometimes it will leak externally and the fluid will run down the pedal. wipe it with your finger or a paper towel. If it is leaking there, check the floor mats and floor for a puddle of brake fluid. BTW, it will eat the paint so yo don't want it on the floor of the car.

 Posted: Jun 19, 2018 07:28PM
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Quote:
Originally Posted by 1967minicooper
Hello  owners MINI. Had trouble putting tran into reverse without grinding.So I thought I would adjust the clutch arm the stop.After taking spring off the slave and adjusting the gap,now I lost the pressure on the pedal.There was some sign of the clutch doing something,but couldn't put into any gear.The pedal isn't there now.Mite have to bleed the slave tomorrow.Any help would be helpful.Didn't take any fittings off.  STUMPED
Taking the spring off the slave doesn't do anything... except ensure that you need to keep the clutch stop adjusted...

If you remove the spring the clutch becomes self adjusting.

However,   there are two issues that need to be considered.  

1.  When you bleed the slave its not unusual for a bubble of air to get trapped at the back (piston) end of the cylinder..fluid comes in from the master brushes past the air bubble and exits the bleeder. The clear fluid coming out is taken as a sign that all the air is gone....But its not.... So I always start the bleeding process by detaching the slave rod from the clutch lever, loosen the bleed valve and try to force the slave rod back into the cylinder.  You'll probably get a mix of air and fluid escaping so have rags handy.  Once you pushed the piston as far in as it will go revert to the normal bleeding process ....  Use gentle the fluid(Ezibleed) or pedal pressure to push the slave piston back out to its operating position - DON'T pull on the end.  Then reconnect the slave rod/clutch lever..  This may be why the previous poster found that the bleeding process improved with the spring in place.....

2.  Make sure the slave piston is not running out of travel.  Pull the boot off the end of the slave, push the pedal to the floor and look to be sure that there's still space between the piston and the C-clip at the outer end of the cylinder... If there isn't - then this is where you need to extend the slave rod or bend the clutch arm (or weld up the ball)...

helpmymini is right that the arm and plunger only move a few mm ..but the top of the lever/slave piston (which is the bit you can see) move almost 25mm (an inch).

Cheers, Ian

 Posted: Jun 19, 2018 06:18PM
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just recently I was having decreasing clutch functionality. I replaced my master and slave a good 10 years ago so I figured it was time. I replaced both cylinders including the flex line to the body. I got in, not a darn thing. Bled it over and over and couldn't get it to work very well. I replaced the return spring and it started to work, but I couldn't get it to fully release.

I recalled way back when I had replaced the parts and had the same issue. The ball at the end of the arm had worn down causing a lack of movement. I had a friend weld material on the end, reshaped it to a ball again and VOILA I had a beautifully functioning clutch again.

Be sure the plunger is also not buggered up. Both the arm and the plunger only actually move about 1/16th of an inch. Any slack in those parts cuts into precious movement. As does a worn clevis pin. Be sure to thoroughly clean and grease any moving parts.

Good luck.

Mark Looman, Ada Michigan 1967 Austin Cooper S
 Posted: Jun 19, 2018 06:05PM
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had replaced the master and slave about 2 years ago,will look it over wed.If either one is passing the fluid,where would the leaking oil be coming out,slave by the plunger and where should I look on the master? THANKS FOR THE HELP

 Posted: Jun 19, 2018 05:54PM
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CA
There was ONE THING on looking into the engine bay when I first laid eyes on ROO in Wishart on August 5th, 2011...a USED Brake Master Cylinder was being used as a Clutch Master.

It got me all around Australia including Tasmania but the old Brake Master failed on the way to the All British in Vancouver May 2014...fluid was getting by the seals in the master.

Put a new Brake Master in...also looked more appropriate!  2 wins!!

 Posted: Jun 19, 2018 04:59PM
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CA
I would guess a replacement of the slave is in order....or rebuild kit.  dead easy job

 

"Everybody should own a MINI at some point, or you are incomplete as a human being" - James May

"WET COOPER", Partsguy1 (Terry Snell of Penticton BC ) - Could you send the money for the unpaid parts and court fees.
Ordered so by a Judge

 

 

 

 Posted: Jun 19, 2018 04:53PM
 Edited:  Jun 19, 2018 04:58PM
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US
do you have a work shop manual?   Search this site on "how to" adjust the clutch. 

https://www.minimania.com/Clutch_Checking__Pre_Verto__1086

BTW,  if the slave is not moving when pumping the pedal, it's likely you've got fluid passing the seals. At the master cylinder or at the slave.  Pull the rubber cap off the slave and see if it's pissing brake fluid from the cylinder. It should not be. Renew the slave with new or rebuild kit.  If the slave is not leaking, I'd look to the clutch master.  Have a helper pump the pedal and watch the slave. Make sure you've got the reservoir topped up with fluid.

 Posted: Jun 19, 2018 03:51PM
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Forgot to tell what kind of car I have  1967 998 minicooper

 Posted: Jun 19, 2018 03:45PM
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Hello  owners MINI. Had trouble putting tran into reverse without grinding.So I thought I would adjust the clutch arm the stop.After taking spring off the slave and adjusting the gap,now I lost the pressure on the pedal.There was some sign of the clutch doing something,but couldn't put into any gear.The pedal isn't there now.Mite have to bleed the slave tomorrow.Any help would be helpful.Didn't take any fittings off.  STUMPED