Clutch system seems not to get pressure is it the master cylinder?

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
V

virtualme123

New Member
Posts
83
So going through the fun of changing my clutch but before I pop the gearbox back on I wanted to pressurise the clutch system to make sure it works. Trouble is I'm struggling to get pressure to build up, now it, could be because my fluid is low so I will try topping it up tomorrow however I was worried because the clutch pedal is just not getting any resistance. Its a new slave cylinder but how would I tell if the master had gone?

Thanks
 
wammers said:
Have you bled the air out of the system?
Click to expand...

Well I attempted that yesterday but think I need to top up my fluid before trying again. I mean how much pumping should you need to do and fluid bleeding before you get resistance from the clutch pedal?


Thanks
 
any time i removed a gearbox i tied a cable tie around the slave cylinder to keep the piston in when you have everything assambled remove the tie and clutch is perfect (no bleeding) but in your case you will have to bleed the clutch system it is best to have help as it is not easy as a one man job
 
virtualme123 said:
Well I attempted that yesterday but think I need to top up my fluid before trying again. I mean how much pumping should you need to do and fluid bleeding before you get resistance from the clutch pedal?


Thanks
Click to expand...
Top up and slightly open bleeder on slave, best with slave piston pushed in as far as it will go. Fluid will find it's way into slave after a while. Then nip up, that should give you a start. Or you can back fill from slave with a large syringe and suitable piece of tube.
 
seanmull said:
or you can backfill with an oilcan and a rubber hose
Click to expand...

Thanks for all your help guys, I actually found that I had to leave the cap off the resevoir to enable me to bleed air out of the system... problem is as soon as pressure is there the slave cylinder is bursting!!

Now I have the gearbox off, and have just replaced the pins which had sheered off my clutch fork, however I'm at a loss as to why it keeps bursting under pressure, I'm expecting to see the fork push the clutch out??

Any ideas anyone? I'm not sure if I'm missing something on the rod end of the slave cylinder where it connects with the arm... frantically looking to pictures and going through manuals...


Thanks
 
What if I haven't completely got all the air out of the system, is it common for the boot to come off the slave cylinder then?

Thanks
 
Ok so looking closer at my clutch slave cylinder the actual piston rubber seal (ring) seems to have an imperfection. I'm wondering when my clutch fork pins sheared the piston had burst out damaging the seal. Then I got a new slave cylinder (before I new about the pins shearing), that burst and maybe damaged the seal on this too. Be interested to know if people have had this experience before...

I have ordered a seal repair kit in the hope that this will solve my problem now I have replaced the old sheared roll pins.


Thanks
 
The rubbers on the new slave cylinder can be reseated if it pop's off. Easy little job.

If there's still no resistence & the rubber still pops off with the bar in place, means something has been fitted wrong. ( I'm assuming the bleed has taking place).
You have to remove the gearbox by seperating the gearbox at the bellhousing & not at the block.
 
Thanks for your reply, I had managed to get pressure build up and what looked like a successfully bleed but as soon as resistance started to build on the clutch pedal the boot would pop and fluid pour from the burst cylinder. This is what made me look at the piston itself and on it I saw a rubber ring that looked damaged, so hoped that replacing that might fix it...

Yeah so gear box is off, new clutch fitted after replacing roll pins on fork.


Thanks
 
UPDATE: So new seal kit has come through for the slave cylinder and the ring is perfectly round, where my original is damaged.

I now believe it was definitely the fact that the roll pins had gone so the clutch fork was travelling too far making the piston pop and in the process damage the seal ring.

I will be bleeding the clutch tonight and hopefully this issue will finally be solved :)


Thanks
 
virtualme123 said:
UPDATE: So new seal kit has come through for the slave cylinder and the ring is perfectly round, where my original is damaged.

I now believe it was definitely the fact that the roll pins had gone so the clutch fork was travelling too far making the piston pop and in the process damage the seal ring.

I will be bleeding the clutch tonight and hopefully this issue will finally be solved :)


Thanks
Click to expand...


A piece missing from the seal will make it leak every time. :):)
 
You must log in or register to reply here.

Similar threads

P
Freelander 1 td4 2006 clutch master cylinder.
Replies
6
Views
862
pdpjpr
P
Paul Coddington
P38A 2.5 DT manual Clutch Slave
Replies
6
Views
966
Paul Coddington
Paul Coddington
Cyrus 200
Clutch pedal
2
Replies
30
Views
2K
Alibro
Alibro
P
Clutch stuck 300 tdi
Replies
13
Views
2K
portokali
P
W
Lt77 clutch or Transmission issue.
Replies
2
Views
318
tottot
tottot
Back
Top