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Transfer Case Leak

rmurray

By rmurray,
in Four Door Family & Wagoneers

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rmurray Rookie

rmurray

Posted
Posted

Ive got a leak from the rear of my transfer case on my 98 stagea. Not 100% sure but think its coming from where a certain hydraulic soleniod bolts on. Ive been told that this solenoid operates the clutch packs within the transfer. Im pretty clueless when it cums to these attessa awd systems so help on where to find a heap of technical info on how the solenoid works and how i would go about bleeding it would be much appreciated.

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Duncan Grand Master

Duncan

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Posted

yes, there is a flare fitting where the attessa actuator line goes into the rear of the transfer case. Those types of fitting can be tricky.

If you are confident get a spanner on it, preferably a flare nut spanner, and back it off a few turns (or even all the way off). If it is off, make sure the flare surfaces are clean and then put it back in tight, but not super tight. Thread tape might help if the flare is not right on both sides, but should not be needed.

In my experience they can loosen up a little over the years, the attessa hose is big and not well supported. 80% of the time this fixes it.

There are other potential problems like damaged flare on the line (you can get a reflaring tool to even it out), and on the xfer case you can actually replace the whole flare casting if it is worn or damaged. There is also an oring which seals the casting onto the xfer case. But these are less likely to be the issue.

rmurray Rookie

rmurray

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Posted

thanx heaps for the reply bud!

yeh im actaully a tech at a holden dealership but just hav know idea wen it cums to this attessa system. il giv that line a check but if i was to remove it how would i go about bleeding the actautor and also wat fluid does the hydraulic system use.

cheers

KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

There is a nipple just about there where the hose joins on and actually another above the diff. Fill up the reservoir in the rh side of the boot with any quality atf and then bleed by running the engine and cracking the bleeder open and shut.

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