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2011 Amarok clutch fault

Posted By Josho Thursday, November 22, 2018 5:20:11 PM
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Josho
 Posted Thursday, November 22, 2018 5:20:11 PM
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Asked by a very good and well respected mechanic to help out with this.

Amarok in with flywheel banging it's nads off.

New LUK clutch, flywheel and slave.

All in and bled up and pedal rock solid. Will not move.

Striped out and he was convinced slave cylinder
Slave cylinder replaced and the same.

I came in to help and diagnosed that the entire hydraulic system is working correctly by loosening gearbox bolts.

Press clutch slowly and gearbox moves backwards, holding hand on pedal, he then pushes gearbox back in with a bar and the pedal returns.

Strip box out, clutch and flywheel identical.

Measured everything. Measured slave cylinder all absolutely spot on.

Is a SAC and the springs are in original as new postition.

I think SAC fault, he's not convinced.

Any ideas?
McTech
 Posted Thursday, November 22, 2018 6:46:35 PM
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It sounds like you are correct.

Ive never had fault like this - but what else could it be? Did you take pressure plate off again?

Friction plate the wrong way around - not allowing the fingers on clutch to move?

Enough time and money lost on the job - get another clutch kit (TPS) and put it in. Double check setting procedure on the SAC.

Then waste a load more time an money with a warranty claim.

Did you check the position of the ratchet adjusters on the pressure plate.?

IDK?

S


I O, I O, its off to work I go!
SB126
 Posted Friday, November 23, 2018 2:17:30 AM
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Wrong thrust bearing, or faulty, SAC, seen it before,
Josho Marked As Answer
 Posted Wednesday, November 28, 2018 2:39:36 PM
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Answer was shit in the hydraulic lines! Wasn't allowing clutch to return.

No idea why pedal felt ok when we loosened bolts, can only think it allowed it to go out so far and come back to block up again.

This is why I don't like back bleeding but hey ho.
McTech
 Posted Wednesday, November 28, 2018 4:27:24 PM
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Josh. So tell us,

How did you find the problem.

Where was the blockage? What was it? How did it get there?

If you reverse filled at the slave, was there lump of poo in the bleed nipple?

It would be good tip - pitfall to be aware of.

Well Done

Mt


I O, I O, its off to work I go!
Josho
 Posted Thursday, November 29, 2018 4:49:37 AM
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I wish I could answer but I think he took the pipe off and something green and plastic like came out of the t piece with the bleed nipple on it.

I suspect something of the old cylinder but he replaced the T piece anyway which houses the CDV.

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