renault trafic clutch wont bleed
Discussion
hi all ,i imagine this has been raised on a few occasions at least but im in need of some help I've replaced a clutch on my trafic new slave cylinder aswell but i can't get the clutch to bleed for love nor money i primed the slave cylinder first and i think ive tried every way of bleding it but to no avail any help would be appreciated thanks in advance
Air will naturally tend to gather in the high spots. If you have completely drained the system you may need to take extra steps to clear air out of all the places it is trapped, for example by reorienting components to chase air towards the bleed outlet, or vacuum bleeding, or bleeding backwards (uphill towards the master).
It's also possible there is a mistake in your technique that is allowing air to be sucked back in during bleeding.
It's also possible there is a mistake in your technique that is allowing air to be sucked back in during bleeding.
GreenV8S said:
Air will naturally tend to gather in the high spots. If you have completely drained the system you may need to take extra steps to clear air out of all the places it is trapped, for example by reorienting components to chase air towards the bleed outlet, or vacuum bleeding, or bleeding backwards (uphill towards the master).
It's also possible there is a mistake in your technique that is allowing air to be sucked back in during bleeding.
thanks ive tried to reverse fill , how do you vacuum bleed ?It's also possible there is a mistake in your technique that is allowing air to be sucked back in during bleeding.
Are you sure you've fitted the slave right way up? Bleed nip higher than union?
If so, then it really shouldn't be hard at all - even just cracking the nip open and letting the fluid run out for a while will do it.
The other possibility is that the master's knackered, too. Is the pedal rock-solid if you clamp the flexi?
If so, then it really shouldn't be hard at all - even just cracking the nip open and letting the fluid run out for a while will do it.
The other possibility is that the master's knackered, too. Is the pedal rock-solid if you clamp the flexi?
TooMany2cvs said:
Are you sure you've fitted the slave right way up? Bleed nip higher than union?
If so, then it really shouldn't be hard at all - even just cracking the nip open and letting the fluid run out for a while will do it.
The other possibility is that the master's knackered, too. Is the pedal rock-solid if you clamp the flexi?
the slave will only fit one way up its part of the thrust bearing ,yeah the pedal is solid when its clampedIf so, then it really shouldn't be hard at all - even just cracking the nip open and letting the fluid run out for a while will do it.
The other possibility is that the master's knackered, too. Is the pedal rock-solid if you clamp the flexi?
TooMany2cvs said:
Gotta admit, I've never found 'em terribly useful. They mostly just suck air past the nip threads, ime.
You must be either using poor quality kit, or have the bleed nipple undone too much if you've got problems.. I wouldn't be without mine, whilst you can bleed brakes ok without it, on stuff like clutches and motorbike brakes it's brilliant. Also makes one man brake bleeding even easier.
OP - did you get it sorted yet?
GreenV8S said:
TooMany2cvs said:
Gotta admit, I've never found 'em terribly useful. They mostly just suck air past the nip threads, ime.
The picture Phillpot posted looks like a pressure bleeder. If you're sucking air in with one of those you're doing something very wrong.I was assuming it was the usual pressure-either-way, can be used as pressure or vac, kit.
If it's pressure-only, then you're right...
Done dozens of these and my method is to run a long tube off the bleed and let it sort itself out for a few minutes . Once there’s fluid leaking from the bleed pump the pedal with the bleed open until it’s squirting out with a finger over the hole . Close bleed and you will have a crap pedal with a bit of resistance at the end of the pedal travel . Now pump the pedal with the up stroke faster than the downstroke and the pedal will come up . My theory is the faster upstoke helps pull the air up towards the master each time and it works on all concentrics fed from the brake master res to the slave .
Pressure will do the job but my way is usually faster
Pressure will do the job but my way is usually faster
mighty kitten said:
my method is to run a long tube off the bleed
Not quite clear about the rest of the process you're describing but a long tube from the bleed nipple up to somewhere near the master cylinder where it can be seen from the driver's seat is my preferred approach too. It lets you do the whole job single handed. Since you can see the state of the fluid coming out you can keep going as long as necessary to get clean clear fluid out of the system - also puts a very slight positive pressure on the bleed nipple which discourages it from sucking in air.Hi all!
I ve replaced the clutch on my Trafic 2005, including the slave cylinder, but I didn't bleed the cylinder before.
I bleeded the clutch with the pedal, by the nipple located close to the gearbox, looks as no air coming, but pedal are still soft. It comes back but not enough force to push the clutch.
Is there any way to get that air out from the slave cylinder? Thanks!
I ve replaced the clutch on my Trafic 2005, including the slave cylinder, but I didn't bleed the cylinder before.
I bleeded the clutch with the pedal, by the nipple located close to the gearbox, looks as no air coming, but pedal are still soft. It comes back but not enough force to push the clutch.
Is there any way to get that air out from the slave cylinder? Thanks!
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