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jlaird

jlaird

Great Pumpkin
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Anyone have a master cylinder push rod out that can be measured? End to end please.
 
Thanks Ray, just something I need to check.
 
End to end, bare rod.

My next question is to ask you guys more than one person please, to measure from the metal part of the end cap on the master cylinder to the first spring holder behind the nut on the clutch rod.
 
with tape measure on flat part of M/C front cover-plate to spring attachment hole on rod measures 2.25" on my car. Hope that helps
 
Hay Mike, can't hurt. Just checking everything I can think of.
 
Checked and checked. All OK.

Now I need to think some more.
 
So, as I try to imagine this, there are three systems that it could be.

1. Clutch pedal & travel
questions: Is travel correct?
Is pedal properly shaped?
Is the travel arc smooth?
Is pedal binding in any way?

2. Hydraulic System
questions: Air in system?
Airtight system?
Equivalant sizes of cylinders?
Nothing binding?
Hose retains shape?

3. Clutch Mechanism
questions Springs work correctly?
Correct thicknesses?
Nothing binding?
Thrust bearing OK?
Thrust bearing fork OK? (shape motion etc)

I'm sure there are other questions - the big question is can we isolate the systems to troubleshoot?

Also, I've been musing your earlier comment that this happens in higher gears - is it possible that you aren't noticing because of the relative abruptness of that shift because of the 1st gear gear ratio. If the problem is not consistant across all gears, does that point to one of the systems? (I'm not sure)

Certainly we ought to be able to bring some order to troubleshooting this.

Others?
 
You would think so. You do know I drained the clutch system and bleed it again of course.

No clue what it is all checks ok.

The only thing I do know that is different is that this throwout bearing is about 1/4 inch thiner than the other that was in there. It is new as well and came with the Hazelton clutch set.

You know maybe I should call Moss tech folks and see why it is thiner.
 
worth a try - any chance that the fork got bent - even a little? I know you're a determined guy but I might also be dropping by my local transmission shop for a conversation.
 
JPSmit said:
So, as I try to imagine this, there are three systems that it could be.

1. Clutch pedal & travel
questions: Is travel correct?
Is pedal properly shaped?
Is the travel arc smooth?
Is pedal binding in any way?

2. Hydraulic System
questions: Air in system?
Airtight system?
Equivalant sizes of cylinders?
Nothing binding?
Hose retains shape?

3. Clutch Mechanism
questions Springs work correctly?
Correct thicknesses?
Nothing binding?
Thrust bearing OK?
Thrust bearing fork OK? (shape motion etc)

I'm sure there are other questions - the big question is can we isolate the systems to troubleshoot?

Also, I've been musing your earlier comment that this happens in higher gears - is it possible that you aren't noticing because of the relative abruptness of that shift because of the 1st gear gear ratio. If the problem is not consistant across all gears, does that point to one of the systems? (I'm not sure)

Certainly we ought to be able to bring some order to troubleshooting this.

Others?
Click to expand...

I think I would eliminate # 1 right away...can't correlate it with the symptoms! Jack has bled and re-bled the system and has hard line to the slave and binding wouldn't cause a soft pedal, but probably would make for a harder pedal, eliminating #2...which leaves us with the possibilities raised in #3 and since the only new variable is that T/O bearing... /bcforum/images/%%GRAEMLIN_URL%%/wink.gif /bcforum/images/%%GRAEMLIN_URL%%/thumbsup.gif
 
Nothing seems to be binding, if springs are removed everything moves nice and easy without excessive play indicating bad bearings.

At this point, in my opinion, everything external has been checked and rechecked and found proper.

Sooooooooo, will wait, unless it gets worse of course, till the next engine pull and will replace the throwout bearing with a new thick one. At the same time will compare, side to side, forks. I did compare the old clutch plate and disk with the new one side by side and the only difference was the throw out bearing. Note to self: call Moss tech.

All that is predicated on me not finding a really good ribbed case tranny on the cheep down stream.
 
They're out there Jack!! Even a decent one...I know you would enjoy rebuilding one!!! /bcforum/images/%%GRAEMLIN_URL%%/grin.gif
 
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