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Clutch master/slave/bleeding....no pressure.


mbm

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Hi all,

I´m helping a friend to get on the road a 200 Tdi that was parked for 4or 5 years.
The clutch pedal had any pressure so we replaced seals on master and slave pumps, bleeded and still no pressure.
The master pump has pressure, the slave has pressure (tested manually and out the LR), tried reverse bleeding and still no pressure.
What are we doing wrong?
(Seals are in the correct position...)

Best regards,

Mario

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master seals in the right way around ?? some of them have a cup washer (to be fair you should get some resistance the wrong way around though...)

if you remove the hydraulic line at the slave cylinder end... stick your finger over the end of it and someone pumps the other end... do you get pressure??

If so... problems in the slave.... if not .... problem in the master ....

... note .... I haven't done one for a while so I may be taking out of my rear ... but worth a think and check?

Rob

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Rob: all seals and washers are in the right place, slave too. I can feel the pressure in the master.
Les: how can I check the operating rod issue?
I have removed the slave and the
operating rod, mounting I have felt a big pressure to place the pumpand suddently it went to his place (other way wasn't possible to do the bolts...)

I´ll check again.

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Try disconnecting the hydraulic line to the slave cylinder at the slave cylinder, and to ensure that you have fluid flow - push back the "nut" and put a hose over the tube and put the other end into a 1/2 filled clear bottle of brake fluid , once that full flow has been established, and any air has been exhausted reconnect and bleed the slave cylinder.

If you don't have a good flow, the problem is at the master cylinder, if you do and the slave cylinder still isn't working the problem is in the slave cylinder. If both are working then the problem is at the clutch lever/push-rod.

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