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Old 12-23-2017, 10:15 AM   #1 (permalink)
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Default ARB airlocker

Hey guys Landon here.....I just installed a rear locker in my samurai, when i went to test it out everything worked out great until I Putnam a load on it. The compressor would cycle everything 30-60 seconds going up an incline with articulation. GOing down hill it would cycle every 10 seconds with articulation, but on flat ground the compressor does not cycle.... when I set the backlash it was set at 0.007" I called ARb and they said the specs were 0.005"-0.010"... he reccomended to try 0.005" since it was a smaller thris member.

ANY THOUGHTs?

PS yes I have checked for air leaks from the compressor to the third member
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Old 12-23-2017, 05:31 PM   #2 (permalink)
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What happens if there is no articulation?

If the compressor is cycling repeatedly, there is an air leak somewhere - if it's happening only with articulation I would suspect the leak to be external and related to the flexing of the airline.

With regard to the backlash settings - personally I don't think the backlash should have an impact on leaks, that's more of a gear mesh issue, and it should be set to Suzuki's specifications - assuming the ring & pinion are not new, I would be setting to what ever it was when I disassembled the third member to install the locker.

One more question - what part number locker are you using - is the old style three piece or the newer two piece?
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Old 12-23-2017, 11:04 PM   #3 (permalink)
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If there is no articulation there is no cycling...

I've checked from the compressor to the housing in regards to the leak with no findings even with the compressor cycling .....

I should just saturate the breather port with soapy water to see if it's leaking and coming out of there then I would know it's internal

As for the part it's the RD208

I set the bashlash to the as found measurement of 0.007"

Who knows
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Old 12-24-2017, 06:27 AM   #4 (permalink)
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Quote:
Originally Posted by Landonyacobucci View Post
If there is no articulation there is no cycling...

I've checked from the compressor to the housing in regards to the leak with no findings even with the compressor cycling .....
I'm not certain if I'm mis-understanding you - your first post talks about the compressor cycling going up/downhill with articulation, but not on flat ground - this post suggests that you've somehow been able to look at the airlines whilst the compressor is cycling - which is what I was about to suggest ...

Jack the vehicle up, place it on stands and then place a jack under one end of the rear axle and tilt it to simulate articulation and then whilst the compressor is cycling, liberally apply soapy water...
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Old 12-24-2017, 09:31 AM   #5 (permalink)
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On flat ground it doesn't cycle.... so I jacked one side up and the cycling started and that's when I tried to find the leak, and could not find one.... which leads me to believe it's internal
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Old 12-24-2017, 12:11 PM   #6 (permalink)
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Under normal circumstances, there should be no appreciable movement, internal to the differential when one side of the axle is lifted - this, in theory, rules out internal leaks - it will either leak or it won't, rather than leak when one side is jacked.

The only thing I can think of is the bulkhead fitting being incorrectly assembled - for example the seal housing tube not being fully inserted in the the center compression fitting before tightening, or the compression fitting itself not being fully tightened or possibly damaged - there is an O-ring that seals the two parts together and to the seal housing tube - in theory at least, if this is loose or damaged, pressure on the airline cause by tilting could allow air to leak internally.
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Old 12-24-2017, 02:04 PM   #7 (permalink)
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I will check that out before disassembly ....
this morning I check snooped(soapy water) the breather when it was cycling and it large bubbles were coming out of it.....also it was weird cause it only leaked (cycled the compressor)when I lifted up the passenger side

before I installed the third member I double checked to make sure there were no leaks in the bulkhead fitting zone so now I believe it has to do with the seal housing moving a couple thousandths, just enough to let a little air out
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Old 12-24-2017, 04:50 PM   #8 (permalink)
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The seal housing is designed to "float" and is retained by the spring clip - I don't see why tilting the axle should cause it to move, I would not expect a few thou movement to cause it to leak.

Bottom line is, if it's leaking through the breather, it's internal, so you're going to have to pull the third to find out what's going on.

Question - have you tried flexing/pulling/pushing the air line where it enters the housing to try to simulate the flex when articulating?
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Old 01-07-2018, 12:01 PM   #9 (permalink)
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Sorry for late response yes I have it is leaking through breather of axle housing I will be going into third member to see what is wrong and will post on this thread of what I have found in the next month
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