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PostPosted: Mon Feb 12, 2018 6:41 pm 
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Joined: Thu Sep 25, 2014 10:04 am
Posts: 81
Location: France
Car Model: C900 turbo
Hi all, I've just changed the seals in the clutch master cylinder, no probs, however I can't get any fluid out of the slave.
I'm using a Laser 4832 tool to pressure up the brake fluid reservoir.
I made sure that the rod/seals were pushed ( after the circlip was put back in place ) as far back as possible towards the pedal.
Even when I removed the slave bleed nipple to check if it was blocked ( it wasn't ) nothing came out.
I very carefully poked a piece of copper wire into the slave to see if that was blocked, it wasn't.

So, what have I missed?
As always any advise is much appreciated, cheers, Ian.


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PostPosted: Mon Feb 12, 2018 7:57 pm 
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Joined: Mon Nov 03, 2014 9:45 pm
Posts: 96
Location: Sandbach, Cheshire
Car Model: 99L,9000,9-5, Rovers & Imp
When I did my 99 I just blew down it so it doesn't take much pressure.

Of the two seals one acts as a one way valve, when foot istn't on the peddle ( or being let off ) it allows fluid in, when foot is on the peddle it seals. Therefore it needs a bit of slack on the peddle to allow fluid in.

Can't remember the Saab setup but on most cars there should be some adjustment ( threaded rod ) between the peddle and cylinder rod.

_________________
John
Sandbach, Cheshire
1973 99 2.0L
1997 9000
2006 9-5 2.3
1957 P4 90
1968 Imp Super
1974 P6 3500


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PostPosted: Mon Feb 12, 2018 8:24 pm 
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Joined: Thu May 05, 2011 4:39 pm
Posts: 1036
Location: Auchindoun, Moray, North east Scotland
Car Model: Saab 99 T16 project
the last hydraulic clutch I bled I did so using a clean oil can filled with brake fluid, connected to the bleed nipple with a short piece of hose, I just pumped until the reservoir started gaining then tightened the nipple

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1 Saab
3 VWs
1 Audi


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PostPosted: Tue Feb 13, 2018 5:05 pm 
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Joined: Thu Sep 25, 2014 10:04 am
Posts: 81
Location: France
Car Model: C900 turbo
Thanks for the replies, I found the problem by chance. I thought before I removed the master cylinder again to check that all was well I'd change the hose from the reservoir to the master cylinder as it was looking a bit tired. I tried to drain the "clutch compartment" within the brake reservoir but a clear gel like substance was blocking the exit. After a good clean and fresh brake fluid it bled a treat.
Needless to say a full brake fluid change is on the cards very soon, even though the fluid looks clean.


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PostPosted: Fri Feb 16, 2018 10:45 am 
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Joined: Thu Sep 25, 2014 10:04 am
Posts: 81
Location: France
Car Model: C900 turbo
JohnKeane, like your 99 when I was able to bleed the system it took very little pressure, and on my 900 there's a solid rod between pedal and master cylinder so no adjustment.

ianlaw, I've heard of reverse bleeding before and would have tried it if I hadn't found the gel like stuff first, like the idea of the oil can though.

I'm please the way the seal kit is performing but I think I'm going to source a new master cylinder just in case. I keep hearing an old mechanic I used to work with say, " old and new together no never".

Cheers all, Ian.


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PostPosted: Fri Feb 16, 2018 11:52 pm 
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Saab Nut
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Joined: Fri Aug 05, 2005 7:42 pm
Posts: 1867
Location: PRESTON. LANCASHIRE
Car Model: 9000 Aero, 900 Ruby, + others
Every time I've changed hydraulic clutch pipes its always been a bugger to get the pedal back but back bleeding always sorts out the trapped air.
I have a small oil can with a 12" small bore hose attached ready for next time.....


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PostPosted: Tue Feb 20, 2018 10:16 am 
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Joined: Thu Sep 25, 2014 10:04 am
Posts: 81
Location: France
Car Model: C900 turbo
Guess what I bought yesterday? Yep, oil can, thanks for the idea.


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