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When running the transfer/pto at high idle it's blowing gear…

Customer Question
When running the transfer/pto...

When running the transfer/pto at high idle it's blowing gear oil out of vent

Mechanic's Assistant: What's the make/model/year of your truck? Engine type?

89 mack rd688s vac truck

Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix. The Heavy Truck Mechanic I'm going to connect you with knows all the tricks and shortcuts.

Thanks

Mechanic's Assistant: Are you fixing your truck yourself? What have you tried so far?

The vent was smashed replaced it checked fluid still doing same thing

Submitted: 10 months ago.Category: Medium and Heavy Trucks
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Answered in 1 hour by:
9/29/2017
Technician: Daniel Wilson,
 replied 10 months ago
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 6,887
Experience: Owner at DJ Wilson
Verified

Hi my name is***** will be glad to help. You are loosing gear oil out of the transmission vent?

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Customer reply replied 10 months ago
At high rpm
Technician: Daniel Wilson,
 replied 10 months ago

Thanks for the info. If the vent is new and replaced, check to see if there is air pressure leaking and pressurizing the transmission case from one of the shaft seals leaking. Otherwise, it is a splash type system and there would be no other reason for oil to push out the vent. Let me know

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