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Old 04-06-2019, 11:40 AM   #1
Skoolie
 
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Join Date: Dec 2017
Location: Arkansas
Posts: 146
Year: 2005
Chassis: School bus
Engine: Cummins
Oil in bell housing ??

Is there supposed to be motor oil draining from the plug in the attached photo?
Looks to me like the bell housing and I can't imagine why there would be motor oil in there unless I have a massive rear main seal leak
The bus is a 2005 thomas safetliner 8.3 Cummins and I believe the transmission is an Allison 200020190406_113405.jpg
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Old 04-06-2019, 01:31 PM   #2
Bus Nut
 
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Join Date: Sep 2017
Location: Swansboro,NC
Posts: 849
Year: 86
Coachwork: Thomas
Chassis: Ford B700
Engine: 8.2
Rated Cap: 60 bodies
Make sure it's oil and not dirty/grimey tranny fluid.
Hate to pull all apart and replace the rear main put it all back together and find it was the tranny seal.
But if I had the tranny out for any reason it would get front and rear seals anyway.
But it would suck to replace the rear main it wasn't leaking and find out you only had to slide the tranny back a foot to replace the front pump seal
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Old 04-06-2019, 01:37 PM   #3
Skoolie
 
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Join Date: Dec 2017
Location: Arkansas
Posts: 146
Year: 2005
Chassis: School bus
Engine: Cummins
Definitely motor oil but yeah I'll do both when I pull it just for good measure
Now I'll habe to measure my oil loss rate and see when I'll have to pull it thank you
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