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04-17-2016, 01:59 PM | #1 |
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Join Date: Apr 2014
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Correct diff oil 8" ford
I had to change the pinion oil seal on my falcon, has a regular non posi diff. About a pint of thick gloopy black oil came out! The regular gear oil I used was much thinner. I'm pretty sure it's noisier now!
Just wanted confirmation on the correct grade of oil Ian |
04-17-2016, 04:13 PM | #2 |
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Re: Correct diff oil 8" ford
The orig oil was 85-90, but, during its life time a pint or quart of stp may have been added to quiet bearing and gear noise.
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04-17-2016, 05:10 PM | #3 |
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Re: Correct diff oil 8" ford
Should I drain it, refill and use stp again?
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04-21-2016, 12:07 PM | #4 |
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Re: Correct diff oil 8" ford
If its noisy why not find out why and fix it, better than having it go down along the hi way.
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04-21-2016, 04:52 PM | #5 |
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Re: Correct diff oil 8" ford
Looks like I've messed up the preload tension, will need to get it set up properly, just hope I haven't caused any expensive damage!
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04-22-2016, 07:38 AM | #6 |
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Re: Correct diff oil 8" ford
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04-22-2016, 07:46 AM | #7 |
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Re: Correct diff oil 8" ford
Most every 8" rear I've worked on has needed new pinion bearings and a speedi-sleeve on the yoke.
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04-22-2016, 09:57 AM | #8 |
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Re: Correct diff oil 8" ford
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04-22-2016, 03:59 PM | #9 |
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Re: Correct diff oil 8" ford
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04-22-2016, 05:49 PM | #10 |
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Re: Correct diff oil 8" ford
If you notice that the howling noise only occurs during deceleration, then it is a good indicator that the pinion-bearing preload has loosened. Since you think you may have "messed up" the pinion preload I'd vote for that as the cause.
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04-23-2016, 03:10 AM | #11 |
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Re: Correct diff oil 8" ford
Just hope nothing else is damaged
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