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Old 07-13-2014, 03:08 AM   #1
zanegrey
 
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Default having trouble bleeding hydrolic clutch

hey guys.
my 87 d21 2wd blew out the clutch release bearing and ate up the pressure plate .
this caused the slave cylinder to punch out its push rod.
so I replaced the bad parts and put it back together only to get stuck at trying to bleed the slave cylinder ..

I have been at it all day.
I eventually replaced the slave and bench tested the clutch mc.
it squirts fluid across the garage..
I think I have the push rod on the mc correct and the slave is new.
the fluid is getting to the slave but will not pressure up..

I am very tired and stuck.

any input would be greatly appreciated..


thank you
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Old 07-13-2014, 03:25 AM   #2
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What about the damper, have you bled it there too?
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Old 07-13-2014, 04:15 AM   #3
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IMHO, remove the damper. It will make things feel better and easier to bleed.

Its a pain to bleed. For a while it will feel like nothing is happening. Keep an eye on the reservoir, it is tiny and runs out fast.
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Old 07-13-2014, 05:34 AM   #4
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thank you ..
I will look at it tomorrow..

just so damn tired I could not think straight...
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Old 07-13-2014, 01:07 PM   #5
cadillacdude1975
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did you bench bleed the master cylinder first?
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Old 07-13-2014, 01:34 PM   #6
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Definitely get rid of the damper as I show here:
http://www.infamousnissan.com/forum/...ad.php?t=25801


Bleeding is a pain. It is best to have a helper when doing this. Have them press the clutch pedal and hold it to the floor while you crack the bleeder screw. Do this until you start to get some pressure then have the pump it up and hold it. Yo umay have to bleed at the upper master cylinder as well.

Air in the line travels upward so it is hard to get it to go down. Bleeding at the master cylinder may help ge the air out.
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Old 07-14-2014, 02:59 PM   #7
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thank you all.
I did finally start getting pressure.
I left the damper on as all the fittings came loose and did not break or strip out.
the clutch engages right off the floor ..

so do I lengthen the clutch mc push rod or shorten ??
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Old 07-14-2014, 03:24 PM   #8
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Quote:
Originally Posted by zanegrey View Post

so do I lengthen the clutch mc push rod or shorten ??
Adjust the rod until you have about 3/4" of free play until the pedal engages the rod. You must have some free play in case the fluid heats up and expands and that will cause the clutch to slip.

The rest you cannot adjust as it is hydraulic.
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Old 07-14-2014, 03:52 PM   #9
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So..is that lengthening or shortening the mc push rod??
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Old 07-14-2014, 04:53 PM   #10
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I think your saying the clutch engages just before the pedal hits the floor... If this is the case then you would need to lengthen the rod so it engages sooner.
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