Thread: Clutch Master Cylinder - long term solution?

Originally Posted by Yorkshire_Jon

{snip]

When they fail (in the Uk) it's because the rubber seals die, nothing to do with the casing in the bore wearing away.

Touch wood, My 2006 TD5 is on its original master and slave, no oil leaks & UK fluid.

J

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Yep, seal failures.

Look back over the years of the forum and it's a constant, ongoing issue with Lucas/Girling cylinders and many leaking during warranty.

Unfortunately a new M/C was cheaper than a seal kit and it's now lasted many years

[edit] and FWIW I'm still on the original slave cyl that seems to give many problems, so go figure........

Thanks for all the great advice everyone!

Where can I get the PBR one? Anyone have a part number?

Cheers,

Adam

I believe You would use a 3/4" PBR trailer brake master cylinder.

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Ashcroft Transmissions - TD5 Defender Auto Kit





jc

Originally Posted by bcj

what he does is machines an extra groove for an o-ring on rear of piston to support it better in bore.

Brett

110 300tdi

The last two of mine that have failed have had the rear groove and the second seal. I bought a cheap one from Supercheap once (as a backup) and it does not have a second seal. Thankfully I've never needed to use it.

Originally Posted by isuzu110

The last two of mine that have failed have had the rear groove and the second seal. I bought a cheap one from Supercheap once (as a backup) and it does not have a second seal. Thankfully I've never needed to use it.

My supercheap one lasted a week. Is now pouring fluid onto my foot!

Got me home though, which was the point of it I suppose.

My clutch MC is leaking again, I was going to fit a Landcruiser unit but to save pulling out the pedal box to redrill the ofset flange holes I'm going to try a Jeep one, Checking the Jeep forums they dont suffer the same leaking hydraulics issues (tho the jeep clutch itself does have issues).

Ive ordered one of these, 1989 Jeep Wrangler Clutch Master Cylinder 53004466

its 11/16" compared to the Defenders 3/4" (12/16") bore so might make the clutch pedal a bit lighter too !!

Well, I don't know. In seventeen years of driving Defenders I've only replaced one clutch master cylinder. One of my current 130s had a leaky MC after about fourteen years and 200000km. I replaced it with a cheap trailer one and two years later it's still fine.