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Failed clutch MC or something else?

928 views 5 replies 2 participants last post by  gdill2 
#1 ·
Hello All,

I replaced my 4th failed clutch slave cylinder in as many years....

The job went easily enough aside from one if the mounting bolts refused to bolt flush as it once had. After bleeding the system, I took the car for a spin. After going three blocks the clutch peddle went soft and I couldn't shift .. I rolled home.

After opening the hood, the lid and the body of the clutch MC was soaked in fluid, and I found the fresh fluid inside had become milky, but the clutch MC was rather full. The clutch MC was replaced with new about five years ago.

It's dark now, so.I'll have to start again in the morning. Any thoughts?

Thanks in advance!
greendread
 
#2 ·
Let us say that you plan to keep this car forever.

Source and properly install a new/reman clutch master cylinder, slave cylinder and rubber hose (assuming that the rigid line is healthy).

Use DOT 4 non-synthetic fluid ONLY.

Be sure the clutch return spring is of the correct type and properly installed.

Use a pressure bleeder instead of pumping the clutch pedal.

Be certain that the vent hole in the MC cap is open.

Use new mounting bolts if any existing are flaky.

If a bolt won't "flush up" add a flat washer and spring washer.

Adjust the clutch fork free play to the minimum amount - just enough to confirm no action on the fork at rest.

For links to factory manuals see below.

George Dill

http://www.volvoamazonpictures.se/documents/Volvo_Amazon_manuals_en.php

http://www.volvoamazonpictures.se/modelyears/modelyears.php
 
#3 ·
Thanks George,

I keeping this car forever... it's been 15 lovely years so far.

The hardline is healthy. The slave and soft lone are new. I did put a washer in to remove any gap. This is the first I am hearing of a vent hole... is it just a hole on top, can it be closed ? The pressure bleeder and synthetic sound like a good idea.

Thanks for the links!

Cheers greendread
 
#5 ·
Hello George,

I see, yes mine is like the one Ipd offers, I think I source it from skandix. I did the job the same way I always have... Which is not the right way. I will try again in the AM. I don't think my local shops have the pressure bleeder though autozone claims to have one as a loner.

Thanks again!

greendread
 
#6 ·
Hello George,

I see, yes mine is like the one Ipd offers, I think I source it from skandix. I did the job the same way I always have... Which is not the right way. I will try again in the AM. I don't think my local shops have the pressure bleeder though autozone claims to have one as a loner.

Thanks again!

greendread
It is now beyond "AM" so you are reading this perhaps too late but...

If you are a DIY guy and work mostly alone consider purchasing the one-way bleeders one each for the clutch slave cylinder and one each for every bleeder nipple on the brake system.

Below are links with some relevant info re bleeding the slave and other "be sure to" stuff.

You can do a homemade pressure bleeder with a turkey baster and the old cap from the old clutch master cylinder but without the one-way self-bleeder you gotta be fast!

George Dill

http://forums.swedespeed.com/showthread.php?191971-clutch-pedal-ughhhh-FIXED!-next

https://www.brickboard.com/RWD/index.htm?id=1298612&show_all=1

https://www.brickboard.com/RWD/index.htm?id=1071030&show_all=1

https://www.brickboard.com/RWD/index.htm?id=1277456&show_all=1
 
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