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10-31-2013, 09:40 AM
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#1
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Senior Member
Join Date: Nov 2010
Location: California
Posts: 1,012
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Rear differential oil level with ARB locker
Checked my rear differential gear oil last weekend and noticed that it was about 1/2" below the filler so I filled it back up (even with the filler hole on level ground). After driving it for the past few days I noticed a substantial amount of oil has squirted out of the breather tube. ARB's instructions say that it should be filled "level with the filler hole". Is it because the ARB differential is larger than stock and therefor has a larger displacement? Not really concerned since it will fix itself, curious if anyone else has had this issue.
Stock Dana 60
http://store.arbusa.com/Assets/PDF/RD21_i.pdf
__________________
2006 E350 6.0PSD 5R110, SMB 4X4, RB-50, ARB lockers front/rear, Aluminess galore, AMP steps.
Callsign KK6GIY
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10-31-2013, 07:33 PM
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#2
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Senior Member
Join Date: Feb 2009
Location: AVL NC
Posts: 1,008
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Re: Rear differential oil level with ARB locker
Do you still have the stock cover? Make sure there's no way the compressor is on and possibly pressurizing the axle.
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Chris Steuber
02 E350 7.3 (V4)
17 Focus RS, 90 SHO, 49 CJ2A, 89 LSC, 20 T250 AWD
ujointoffroad.com
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10-31-2013, 10:21 PM
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#3
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Site Team
Join Date: May 2007
Location: Southern New Mexico
Posts: 10,179
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Re: Rear differential oil level with ARB locker
My Bronco's ARB solenoid vents some oil when de-energizing. Think it's from a twisted seal in the diff. You might want to check your solenoid.
Herb
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SMB-less as of 02/04/2012. Our savings account is richer, but our adventures are poorer.
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11-01-2013, 11:09 AM
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#4
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Senior Member
Join Date: Nov 2010
Location: California
Posts: 1,012
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Re: Rear differential oil level with ARB locker
Quote:
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Originally Posted by UJOINT
Do you still have the stock cover? Make sure there's no way the compressor is on and possibly pressurizing the axle.
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No, I replaced it with a Dynatrac cover. The instructions that came with it said to fill it level. I still have the stock cover, I'll compare them and see if there is a difference in height.
__________________
2006 E350 6.0PSD 5R110, SMB 4X4, RB-50, ARB lockers front/rear, Aluminess galore, AMP steps.
Callsign KK6GIY
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11-03-2013, 05:59 PM
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#5
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Site Team
Join Date: May 2007
Location: Turlock Ca
Posts: 10,409
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Re: Rear differential oil level with ARB locker
The rear end shop I deal with told me they will spit oil if you fill to the level ARB recommends. Don't know how true that is. I just ran the breathers up higher and have never had that issue. I like em higher anyway.
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2006 Ford 6.0PSD EB-50/E-PH SMB 4X4 Rock Crawler Trailer
Sportsmobile 4X4 Adventures.......... On and off road adventures
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11-04-2013, 07:47 AM
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#6
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Senior Member
Join Date: Apr 2007
Location: Blairsden, CA (when not on the road)
Posts: 1,109
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Re: Rear differential oil level with ARB locker
When I put a Dynatrac cover on mine and filled to the bottom of the threads it also blew fluid out the breather. Even with an extended tube. I checked the two covers and found that the Dynatrac one had its filler hole a half inch higher than the Ford one. Seems a dumb move on Dynatracs part, but I just fill to a half inch low and all is well.
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Scatter
You can be anything you want on the Internet,
it amazes me that so many choose stupid....
2007 RB50, 6.0
K1WGB
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11-04-2013, 08:23 AM
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#7
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Senior Member
Join Date: Nov 2010
Location: California
Posts: 1,012
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Re: Rear differential oil level with ARB locker
Quote:
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Originally Posted by scatter
When I put a Dynatrac cover on mine and filled to the bottom of the threads it also blew fluid out the breather. Even with an extended tube. I checked the two covers and found that the Dynatrac one had its filler hole a half inch higher than the Ford one. Seems a dumb move on Dynatracs part, but I just fill to a half inch low and all is well.
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Yep, they put the hole a little higher. It should be done spitting 85w-140 in a few days. What a mess.....
__________________
2006 E350 6.0PSD 5R110, SMB 4X4, RB-50, ARB lockers front/rear, Aluminess galore, AMP steps.
Callsign KK6GIY
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