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Old 12-03-2005, 04:51 PM   #1 (permalink)
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Red face Venting issues

Hello to all.

Has anyone with rockcrusher 60's experienced gear oil coming out of the breather.

My diffs are not overfilled, the breather is clear and open.

I had a lot of oil leaking when the vent was located on the top of the diff. I relocated the vent on to the filler plug on the cover and the leak stopped until I drive over 65 MPH.

It is a rockcruser 60 with 4:88's full floating rear.

Thanks
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Old 12-03-2005, 06:29 PM   #2 (permalink)
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I welded my vent up, and just forgot about it.... Ive never had any issues... this is on a 79 ford D60, is sees nothing more than tril use.
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Old 12-03-2005, 06:35 PM   #3 (permalink)
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sounds good except its a daily driver and trail vehicle.
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Old 12-03-2005, 11:30 PM   #4 (permalink)
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I had the same trouble with my 9". the trouble is that at highway speeds the oil is under considerable pressure.(from the ring gear) I moved the vent away from the dif onto the axle tube only like four or so inches away. Much MO Betta!
the vent can be any where along the tube....the further away the less likely it will spew.

Last edited by JBRADYM; 12-03-2005 at 11:34 PM.
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Old 12-03-2005, 11:56 PM   #5 (permalink)
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Any water in the diff (even condensation) can and will "carry" gear oil with it when it evaporates. I wrote a thesis on isolating orange oil by distilling water using the same concept & was published by "Science Teacher" magazine. My 15 minutes of fame, what a waste .
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Old 12-04-2005, 12:06 AM   #6 (permalink)
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Quote:
Originally Posted by Schmozilla
I welded my vent up, and just forgot about it.... Ive never had any issues... this is on a 79 ford D60, is sees nothing more than tril use.
Hopefully your trail rides do not build up heat in the diff. If they do, your seals will be under pressure (look up Charles Law) Your real issues will occur when you have been wheelin' for a while then attempt a deep water crossing(any crossing that will cover the axle). The cooler temp will create a vaccuum in the diff. You can figure out what will happen next.
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Old 12-06-2005, 04:19 AM   #7 (permalink)
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Quote:
Originally Posted by JBRADYM
I had the same trouble with my 9". the trouble is that at highway speeds the oil is under considerable pressure.(from the ring gear) I moved the vent away from the dif onto the axle tube only like four or so inches away. Much MO Betta!
the vent can be any where along the tube....the further away the less likely it will spew.


Thanks I had a feeling that this was going to be the fix.
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