shorty_f0rty wrote:my mechanic seems to think the clutch is going to need replacing soon as he said he can see there is not much meat left on the place through the clutch fork hole..
i haven't noticed any clutch slipping at all and was under the impression from the previous owner that the clutch only had 10,000km's on it..
would a worn clutch produce these sort of pedal pressure issues?
I would not do the clutch untill it starts to show signs of slipping.
No a worn clutch would not show these signs.
What you are experiencing is a lack of disengagement, which by all accounts seems to be related to the hydraulic side of things.
Even with a broken diaphragm spring in the pressure plate assy, it would give different symptoms to what you have described.
My money is that there is a different internal diameter in the master, thus giving you less travel at the slave.
It is not a big deal totake the m/cyld apart and have a look, dont think you wont get it back together, there pretty simple, just be carefull and think when you put the piston seal back in, so you dont damage it.
Ok thinking cap on.
Start at the beginning.
Sorry if we go over stuff already done, but can you go through these, and let us know the results of each test please.
If you clamp off the flexible hose with some pliers, or proper hose clamps for this purpose, do you have a firm pedal with no travel??
If its still spongey, the problem is air in either the mcyld or the line to the hose that is clamped.
Does the firewall have a crack in it, thus the clutch m/cyld moves when the pedal is depressed, resulting in loss of pedal sweep.
Are the pedal pushrods the same length as the original.
Does the flexible rubber hose bulge when the clutch is depressed?
Is the slave cyld piston pushed as far back into the slave cyld as it can go, and then adjusted up the pushrod length so there is just 1-2mm of freeplay, if at all.
By what you describe, the pedal travel, thus the m/cyld piston travel, is not matched by the slave cyld piston, thus the throw out fork is not being moved as it should.
Did you bleed the mcyld on the bench first,
Put in vice, fill with fluid
Press in the piston all the way, place thumb/ finger over outlet hole,and let the piston slowly return,
do this till you get firm pressure in the mcyld, then, and only then, add it to the system, and bleed from the slave.
I would suggest using some flat tooth pliers, or vice grips on the flexible hose, and gently close the pliers after the pedal has been pushed to the floor, then telling the person in the cab to slowly lift the pedal, then put moderate pressure on the pedal, then release the pliers, allowing the air/ fluid to escape out the open bleeder nipple.
Do this 8 or so times, that should be enough for most.
Doing this will also show you if you are getting pedal pressure in the cab or not, thus helping us diagnose the area at fault.
Is the mcyld getting too low on fluid when you bleed, thus dragging air into the system by accident whilst bleeding??
top it up after each 2nd stroke.
Sorry if we are doubling over things, and going back to basics mate.
Trains
Save the Whales......Collect the whole set.
My Wife Can't Shear..............But You Should See Her Crutch !
