Clutch query
Clutch query
Author
Discussion

steviejasp

Original Poster:

1,646 posts

194 months

Saturday 8th January 2011
quotequote all
Good afternoon oh knowledgeable ones.
I went to back my Cerb out of the garage and i couldnt get it into gear.
It hasnt been used much lately due to salt and st.
Eventually it graunched into reverse and i backed it out.
I then spent a few minutes trying to get it into first and/or reverse again with no luck.
I left it running while i took off the cover to the master cylinder and this was still full. I put it back together and it then went into gear a little stubbornly, After a half a mile it was all back to normal and getting into gear was as easy as ever.
What do you reckon? Impending doom or just a sulk because i havent been using her? Went out for a 50 mile blast and never missed a beat!

boss1uk

260 posts

203 months

Saturday 8th January 2011
quotequote all
That happened to me this time last year.
After thinking it was the slave cylinder and changing that , clutch and lightend flywheel as it seemed silly not to do it all at the same time i found it was the master cylinder , most people talk about looking for fluid under brake peddle but i had none...
not to bad to change although a second set of hands is needed

SimonKD

1,386 posts

260 months

Saturday 8th January 2011
quotequote all
Hi Steve

Could be as simple as an airlock in the clutch fluid.

Master cylinder being full suggests no leaks on slave or master.

There's always the dreaded fingers that could rear their ugly head!

Hope not tho

Regards

Simon

shoggyraminator

255 posts

205 months

Saturday 8th January 2011
quotequote all
Bare in mind that in these cold conditions, any gear change/selection will become more noticeable/stiff until the GB oil has warmed up. Only mention this as you indicate all was fine once it all warmed up.

kojak

4,547 posts

282 months

Saturday 8th January 2011
quotequote all
Could be the fingers that have broke on the clutch.

Mad Mark

2,345 posts

261 months

Saturday 8th January 2011
quotequote all
The exact same symptoms happened to a mate of mine. Even the fluid in the reservoir was fine if a little manky looking.
We tried bleeding it the usual way with no joy so tried an easy bleed and that did the trick.

There must have been a small air lock in the system preventing the usual bleed method (pedal up, pedal down) not to work. Forcing the fluid through using the easy bleed did the trick and it's been fine since.

steviejasp

Original Poster:

1,646 posts

194 months

Saturday 8th January 2011
quotequote all
Thanks chaps. I suppose i shall see what its like tomorrow and go from there.
If it is the fingers, would it still be ok like it was when i eventually got it working?
Its got a 12k service due in May at APM so i might book it in a bit earlier, just in case.
Atb
steve

brakedust

1,059 posts

238 months

Sunday 9th January 2011
quotequote all
When my fingers went I had not clutch what so ever, so I would say its most likely an air lock

steviejasp

Original Poster:

1,646 posts

194 months

Sunday 9th January 2011
quotequote all
Well. its fked again.
Got the AA coming in a minute. Im not sure how Relay/Homestart works but it looks like its going to a garage next week. Ah well. at least it'll be fine for the spring

steviejasp

Original Poster:

1,646 posts

194 months

Sunday 9th January 2011
quotequote all
A nice lad called Carl came today from the AA.
He has arranged for me to call the AA after ive booked it into APM and they will take it up to Andy on a flat bed. Cant complain about that. I dont even need to go with the car.

brakedust

1,059 posts

238 months

Sunday 9th January 2011
quotequote all
If its an airlock then when you are using the clutch a lot it will disperse the air bubbles into lots of smaller ones, then once sitting will re-form into a larger, more compressible bubble. sometimes these can get stuck at certain points and be hard to bleed out (ie the slave) if you still have the car it may be worth using a pressurized bleeding kit (ones that use your tyre pressure etc) to force the air out.
When my fingers went I heard a noticeable difference as the release bearing was being pushed on one side.

steviejasp

Original Poster:

1,646 posts

194 months

Sunday 9th January 2011
quotequote all
I did suggest to him using an Easybleed sort of thing (as per a suggestion earlier) and he was going to give it a try. He jacked it up and looked underneath but couldnt see a bleed nipple anywhere. How does that work?

steviejasp

Original Poster:

1,646 posts

194 months

Sunday 9th January 2011
quotequote all
Oh one other thing. It will go into gear with the engine off. When it starts, you are able to move the car ok. It also gets easier to get into gear after a bit of tooing and froing on the drive. Any more ideas?

Edited by steviejasp on Sunday 9th January 14:55

SimonKD

1,386 posts

260 months

Sunday 9th January 2011
quotequote all
The bleed nipple is underneath the panel that sits below the winscreen, the one held in place with the 2 countersunk caphead screws that also covers the battery. The bleed nipple is usually cable tied just under where the drivers side windscreen wiper spindle is. It's at the end of a piece of stainless steel braided hose coming from the slave cylinder.

Regards
Simon

Edited by SimonKD on Sunday 9th January 17:14

steviejasp

Original Poster:

1,646 posts

194 months

Sunday 9th January 2011
quotequote all
Thanks Simon. Much appreciated.

ridds

8,372 posts

273 months

Sunday 9th January 2011
quotequote all
Hey Steve, had a think a bit more whilst driving back about your woes.

Slave failures nearly always result in fluid under the car,so I think you can rule that out.

It could be fingers although the recent clutch would hint that it's not that.

I still think it's the master though and a way to check that would be to have someone push the pedal while you open the bleed nipple, no pressure or fluid loss would mean that it's gone.

They can fail like brake master cylinders, gradual pressure allows fluid to leak past the seal internally, so in theory pressing it down fast may also hint at the failure.

steviejasp

Original Poster:

1,646 posts

194 months

Sunday 9th January 2011
quotequote all
Hi Matt
Thanks for the input. There are a few drips under the car, always have been but i ts only engine oil as far as i can see. Master cylinder is full to the brim, although fluid is quite dirty.
Ive looked in the pile of receipts donny has aquired and the clutch has done 9000 miles.
I was going to pick up an easy bleeder from Halfords tomorrow. I wonder if you are free for a bit in the evening?
atb
steve

Edited by steviejasp on Sunday 9th January 18:43

ridds

8,372 posts

273 months

Sunday 9th January 2011
quotequote all
Afraid I'm back in Northampton tomorrow. F1 engine to look after. frown

Check the position of the drip as the slave will leak from the joint between the gearbox abstract the bellhousing. The fluid will be very thin not like engine oil at all.

Unfortunately dirty fluid suggests slave seals as that will be them breaking down.

steviejasp

Original Poster:

1,646 posts

194 months

Sunday 9th January 2011
quotequote all
No worries Matt. Its a dirty job but somebody's got to do ityum
I think i'll just get it to APM and get the service done as well.
I'll let you know the outcome asap!!

Mad Mark

2,345 posts

261 months

Monday 10th January 2011
quotequote all
I would go and get yourself an easybleed kit first and give that a go. It's cheap and simple and you will not have to be without the car for any length of time. It will take you half hr to do it yourself.
BUT... personally I hate using tyre pressure as is suggested as its 20-30 psi and not very controllable, remember clutch fluid and paint are not the best of friends. I attached mine to a bicycle pump and that works well and is fully controllable by you.