ARB rear diff air locker

Submitted: Tuesday, May 31, 2005 at 21:49
ThreadID: 23471 Views:1722 Replies:6 FollowUps:2
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evening all

i have noticed that if i engage and disengage my rear ARB air diff lock that a number of times i get oil coming out from the air line at the compressor.

is this normal its only been in for about 9 months and only really used about 20 times.

thanks for your advice

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Reply By: Member - Roachie (SA) - Tuesday, May 31, 2005 at 22:27

Tuesday, May 31, 2005 at 22:27
Yeh, I've had the same thing with my front airlocker. Although in may case the oil has been seeping out of the solenoid, which lives near the brake master cylinder; the compressor is in the cargo area. I am guessing your compressor is mounted under the bonnet and that the solenoid is on the compressor?
The only thing I can think of to minimise the issue is to switch the locker on from time to time. You can do this even on the bitumen PROVIDED YOU ARE TRAVELLING IN A STRAIGHT LINE AT THE TIME. My theory for saying this is that I believe the oil is from the diff and is 'climbing' the air hose via capiliary action (but like many other times.....I could be wrong about that!!!!!! lolol)
Hope this helps a bit
AnswerID: 113827

Reply By: Mad Dog (Australia) - Tuesday, May 31, 2005 at 22:43

Tuesday, May 31, 2005 at 22:43
I had the same problem and the cure was to use it more often. I throw it in even if I don't really need it just to give it a workout, haven't had a problem since. Dunno why, maybe a seal drying out.
AnswerID: 113832

Follow Up By: Member - Phil [Sunshine Coast] - Wednesday, Jun 01, 2005 at 06:09

Wednesday, Jun 01, 2005 at 06:09
Giday M/D
Same prob. Ithought that I just had a crook unit, but it appears ,[by the above posts] that it is not the case. Hopefully, someone has a difinitive answer. Its a bleep off the oil runnin down the firewall all the time,so MAYBY it means i,ll just have to go away more ????? & put it to good use! Cya..
FollowupID: 369912

Reply By: Kiwi Ray - Wednesday, Jun 01, 2005 at 07:41

Wednesday, Jun 01, 2005 at 07:41
Hi gra
From the info I have been given by ARB if it is just an oil film it is acceptable if there seems to be a quantity of oil coming from the solenoid a "O" needs replacing.
no one is saying what a quntity of oil is

AnswerID: 113850

Reply By: ADM - Wednesday, Jun 01, 2005 at 07:41

Wednesday, Jun 01, 2005 at 07:41
I had this expereince with a 100 series front locker. ARB re set the unit and replaced all seals but it did not make a huge diffrerence. The only option was to fit a internal valve inside the diff housing, this sends all the oil back to the diff eliminating and leaking around the solenoid. They did say that it does require to be operated regulary to help reduce this.
AnswerID: 113851

Follow Up By: Tony N. (VIC) - Wednesday, Jun 01, 2005 at 07:47

Wednesday, Jun 01, 2005 at 07:47
Had the same problem with my 80 series, after 3 times back ARB fitted the same valve and looks like all fixed. Time will tell.

Tony N.
FollowupID: 369915

Reply By: mcgra (VIC) - Wednesday, Jun 01, 2005 at 17:34

Wednesday, Jun 01, 2005 at 17:34
thanks all for the replies, will try the turning on more often to see if that helps, cant believe its the 'o's already,


AnswerID: 113932

Reply By: Member - DOZER- Wednesday, Jun 01, 2005 at 19:09

Wednesday, Jun 01, 2005 at 19:09
Mine too
common problem if you can see it as a problem....if you want to, ring ARB and ask them politely for a drain pipe to fit to the solenoid......then the oil can be directed to a place that needs oiling :-)
Another thing you can do is remove the cap that the breather hose has on it and install a old ryco fuel filter instead to keep the dirt out....this will stop water getting through the seals aswell when you go swimming...
AnswerID: 113953

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