[DeTomaso] This time with LINK Re: Follow up, with photos Re: Clutch woes in Asa's garage

[Thomas Tornblom]

Unless you moved the arm on the shaft between photos P9060014 and 
P9060015, I see a problem. The set screw should have a clearance of 
about 1/8" in P9060015. What is shown is excessive.

The internal spring in the slave is designed to take up any slack in the 
mechanism, and it has to be weaker than the external spring.

I think it is easiest to adjust the clutch operation with the external 
spring removed. That way you can see that you have proper clearance at 
the set screw, and you will have the best pedal feel. If you can't get 
things to work properly in this way, there is no way it will work with 
the external spring in place. Just make sure you install the external 
spring afterwards, or you'll be looking at a throwout bearing 
replacement in a short while.

Thomas


Asa Jay Laughton skrev:
> Photos link, please excuse my fried brain not remembering to link the 
> photos earlier.
> 
> http://www.teampanteraracing.com/index.php?option=com_g2bridge&view=gallery&Itemid=57&g2_itemId=3131
> 
> Asa Jay Laughton, MSgt, USAFR, Retired
> 
> & Shelley Marie
> Spokane, WA
> 
> 1971 Mach I Mustang  [ASA JAY]
> 1973 Pantera L 5533  [ASASCAT]
>     
> ******************************     
> http://www.asajay.com
> http://www.teampanteraracing.com
>   
> 
> 
> 
> Asa Jay Laughton wrote:
>> I really do appreciate everyone chiming in to try and help me adjust my 
>> clutch remotely.  I've done everything that has been suggested, but it 
>> still will not work.  The last thing I did today was buy a Napa UP-255 
>> cylinder kit to compare it to what I have.  The slave cylinder I have is 
>> definitely NOT stock.  However the bore size is the same and the kit 
>> part and present part only differ by .001", the kit part being .001 
>> larger diameter than the present part.  And it fits.
>>
>> So I assembled the new piston to the slave cylinder.  Then I removed the 
>> lever arm and moved it one more notch toward the slave.  Now, with the 
>> set screw backed all the way out, I can freely position the lever arm so 
>> it is both free of the pressure plate fingers when closest to the slave 
>> and resting on the fingers when about an 1/8" away.  This is as close to 
>> the slave as I can possibly get the lever arm.
>>
>> Then I installed the pushrod (adjusted for the shortest length possible) 
>> and the external return spring.  Without -any- fluid pressure and in 
>> fact with the bleed screw open, the internal spring on the slave pushes 
>> the lever arm against the fingers of the pressure plate.  The -only- way 
>> to get the throw out off the fingers is to manually push the piston back 
>> into the cylinder... oh but wait...... when bottomed out, I still 
>> -can't- get the throw out bearing off the fingers.  This would tell me 
>> the clutch lever arm is too close.  Why is there even a spring inside 
>> this slave?  It seems to be the cause of all my problems, pushing the 
>> piston out far enough to contact the throwout bearing against the fingers.
>>
>> Okay, so I didn't take video, maybe I should be that's a much longer 
>> process.  Here are the photos, with lengthy explanations accompanying each.
>>
>> Does anyone know what the thickness of a stock friction disc should be?
>>
>> Asa Jay
>>
>> Asa Jay Laughton, MSgt, USAFR, Retired
>>
>> & Shelley Marie
>> Spokane, WA
>>
>> 1971 Mach I Mustang  [ASA JAY]
>> 1973 Pantera L 5533  [ASASCAT]
>>     
>> ******************************     
>> http://www.asajay.com
>> http://www.teampanteraracing.com
>>   
>>
>>
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Real life:   Thomas Törnblom             Email:  Thomas.Tornblom at Hax.SE
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