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edhnb
Samba Member
Joined: December 02, 2011
Posts: 288
Location: El Dorado Hills, California
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 Posted: Sat Jan 30, 2021 1:58 pm Post subject: 091 Transmission differential bearing |
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I am changing out the oil seals in the trans and it appears one of my differential bearings is a bit loose. The other side is solid as Sears (or what Sears use to be).
Anyway, can someone take a look at this short video and all me if it warrants replacement?
https://youtu.be/LflZDv2RQWg
Thank you.
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rugblaster
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Joined: March 31, 2016
Posts: 1244
Location: San Angelo, Texas
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| Posted: Sat Jan 30, 2021 3:38 pm Post subject: Re: 091 Transmission differential bearing |
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Yes, it warrants replacement. Those bearings are actually preloaded. Should be no play in the bearing, actually the opposite
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SGKent 
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Joined: October 30, 2007
Posts: 42958
Location: at the beach in Northern Wokistan
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| Posted: Sat Jan 30, 2021 3:56 pm Post subject: Re: 091 Transmission differential bearing |
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| rugblaster wrote: |
| Yes, it warrants replacement. Those bearings are actually preloaded. Should be no play in the bearing, actually the opposite |
rugblaster has lots of transmission experience. I'd go with his call. Normally the differential bearings have a slight amount of preload on them. Be sure to check the last before and after. Don't preload the bearings until the bell housing is on. You'll need a tool like this to hold the case properly with the bell housing removed.
| SGKent wrote: |
381/8 self-designed tool. It has to hold the transmission case pins tight together with no slop or free play.
VW factory approved tool
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edhnb
Samba Member
Joined: December 02, 2011
Posts: 288
Location: El Dorado Hills, California
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| Posted: Sat Jan 30, 2021 7:06 pm Post subject: Re: 091 Transmission differential bearing |
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I should have mentioned that this is with the bell housing off. Should I replace the bell housing and adjust the rings back to their position and then check the bearing before replacing it, or is it obvious the bearing is bad?
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SGKent
Samba Member
Joined: October 30, 2007
Posts: 42958
Location: at the beach in Northern Wokistan
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| Posted: Sat Jan 30, 2021 9:07 pm Post subject: Re: 091 Transmission differential bearing |
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the bell housing should not come off until the preload is marked and reduced. Right side as I recall is the one to loosen. Best to buy Rick Long's CD on how to set up the preload with new bearings. You can't set the pre-load with nothing holding the case from spreading. Have to make that tool, and it has to be installed before taking measurents. If you have never set ring and pinion lash you may be getting in over your head. Just my 2 cents worth.
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Canned Water - the new California approved parts cleaner (except in a drought in which case rub it with sand).
George Carlin:
"Most people don't know what they're doing, and a lot of them are really good at it."
Skills@EuroCarsPlus:
"never time to do it right but always time to do it twice" |
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