[DeTomaso] Clutch help

Asa Jay Laughton asajay at asajay.com
Fri Jun 25 23:04:35 EDT 2010


http://tinyurl.com/26ge38r

Asa Jay Laughton, MSgt, USAFR, Retired
&  Shelley Marie
Spokane, WA
******************************
http://www.racingagainstautism.com
http://www.teampanteraracing.com


On 6/25/2010 19:24, Will Demelo wrote:
> Where's a link to the power bleeder?
> Will
> ----- Original Message -----
> From: "boyd casey"<boyd411 at gmail.com>
> To:<tmshinro at aol.com>
> Cc:<detomaso at realbig.com>
> Sent: Friday, June 25, 2010 7:53 PM
> Subject: Re: [DeTomaso] Clutch help
>
>
>    
>> Again I am not an expert and although I did solve my problem I never was
>> able to find out what the problem was. Anyway I would be more inclined to
>> think you haveing air leaking in then having fluid leaking out. This could
>> be furthur evideb\ced by the fact that air in you clutch line will cause
>> the
>> clutch "spongy" and repeated  pumping the clutch pedal will compress the
>> air
>> in the system until the clutch works, then after sitting for a while the
>> air
>> will expand again and the clutch will stop disengaging again.  Have you
>> gotten the power bleeder yet? If not you need to do that. The power
>> bleeder
>> takes around two quarts of fluid and pushes it through at around 45PSI.
>> All
>> I know is after I replaced my fittings and  used the power bleeder my
>> problem was solved. If you look at the number hours you have spent and the
>> frustration as well as the fact that you cant drive your car the Power
>> bleeder is a small investment to make to get the problem solved.
>> Boyd
>>
>> On Fri, Jun 25, 2010 at 7:24 PM,<tmshinro at aol.com>  wrote:
>>
>>      
>>>   First I want to thank everyone that sent me suggestions.   I'm still
>>> trying to figure it out but I have a couple more questions.
>>>
>>> I started the car the next morning to move the car forward in my garage
>>> after I experienced clutch drag the night before when I pulled the car in
>>> the garage .  Everything worked fine; I was able to shift into all gears
>>> while stationary with the engine running.  When I depressed the clutch
>>> pedal
>>> I could "feel" the clutch disengage well before the bottom of the stroke.
>>>   The clutch engaged about half way up when I pulled the car forward and
>>> totally disengaged when I pushed the clutch in when I stopped.  I didn't
>>> take in out because I know I would see clutch drag after 10 to 15 minutes
>>> of
>>> driving based on numerous prior test runs.
>>>
>>> Here's my question - I measure 0.020 inches of clearance between the
>>> clutch
>>> disk and pressure plate.  I don't see any separation between the clutch
>>> disk
>>> and the flywheel, but when I move the car by hand with the clutch pedal
>>> depressed I can see the clutch disk move between the flywheel and
>>> pressure
>>> plate.  Should I be seeing measurable separation at the flywheel as well
>>> as
>>> the pressure plate?   From what I have been told I'm don't have as much
>>> separation as I should (0.020 vs 0.030), so I'm wondering if things are
>>> expanding when hot and consuming what little clearance I have.
>>>   Unfortunately, I can't get anymore clearance unless I use up all my free
>>> play (which I've cut down to about 0.060 inches).   Is there enough
>>> heat/expansion between the flywheel/clutch/pressure plate to make a
>>> difference?
>>>
>>> Also I should mention that the clutch master I installed was one I bought
>>> 10 years ago from Collectors Choice.  The MC sat in my tool chest with
>>> the
>>> outlet plugged the whole time time.  I live in Iowa so there were plenty
>>> of
>>> humid days that the MC would have seen in my garage.  I disassembled it
>>> prior to assembly and the bore and seals looked good and I could tell
>>> that
>>> the seals were tighter that my old one when I manually pushed the push
>>> rod
>>> into the bore. I took the MC out a second time to measure the pushrod and
>>> did not see any fluid leaks in the rubber boot.  However, when I bled the
>>> system, the fluid that came out of the bleeder looked clear through the
>>> plastic tube I used but was dark once it was collected in a plastic
>>> bottle.
>>>   Is it possible that the seals could have deteriorated causing blow by?
>>>   Would it make sense that blow by would get worse after cycling the
>>> clutch
>>> for 10 to 15 minutes?  The fluid in the reservoir is clear.
>>>
>>> Unfortunately I didn't think about measuring the bore of the new MC and
>>> comparing it to the old.  I'm assuming they are the same, which if they
>>> are,
>>> baffles me because I never had clutch problems before this.
>>>
>>> The battle goes on.
>>>
>>> Tom
>>> #5186
>>>
>>>
>>>
>>>
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