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Author Topic: 4104 part number help please?  (Read 1665 times)
Jr. Member
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« on: April 14, 2006, 02:33:25 PM »


I haven't gotten hold of the parts manual for my bus yet.  I have PD4104-3103, still equipped with the original Spicer 4 speed.

When I run her, oil accumulates on top of the transmission case and all around the area where the shifter shafts go in through the top of the case. I don't have a good feel for how much she loses per mile, but it's significant.  For a first shot, i thought I'd do the seals in the top of the transmission - does anybody have the part numbers for these seals handy?  Anybody have another theory to where the leak is?

Looking forward to your replies, thanks,


If a half a hen lays a half an egg in a half a day - how long would it take a monkey with a wooden leg to kick the seeds out of a dill pickle?
Hero Member
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Posts: 523

« Reply #1 on: April 14, 2006, 03:02:20 PM »

Does your trans have a breather vent on top of it?
It will look similar to a drive axle breather vent.
I've had them go bad on axles, blowing out seals prematurely.
The 5 speeds in the MCI 9's I wrenched on had the breather vent on it.
I'm not familiar with your type of coach.
Hope this might help.  Cool
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Posts: 115

« Reply #2 on: April 14, 2006, 04:26:26 PM »

HI Casper:
We have the seals in stock.  You can reach me Monday toll free at: 1-888-262-2434.

Oil laying on top of the trans. may come from the trans. or from a leak at the generator or air compressor.

Check it out a bit before you spend your money.

I Hope this HELPS!!!

Happy & SAFE!! Bussin' to ALL, and Happy Easter.

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