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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: Tom curry on June 28, 2020, 06:35:39 PM

Title: Allison trans questions
Post by: Tom curry on June 28, 2020, 06:35:39 PM
So I have an ht 740. It leaks out the front a bit. About a cup full for 500 MI. Is this something to be concerned about with these?
Title: Re: Allison trans questions
Post by: Lin on June 29, 2020, 10:54:29 AM
I do not know where the leak is coming from.  Is it in between the transmission and the engine?  In any case, if it would take major work to repair the leak I would tend to drive it and watch it carefully in case the rate increases.

I do think that it would be a good idea to have a professional look at it and give a prognosis.
Title: Re: Allison trans questions
Post by: Scott & Heather on July 05, 2020, 03:45:46 AM
Where is the leak coming from? Might be a seal going bad.
Title: Re: Allison trans questions
Post by: luvrbus on July 05, 2020, 05:40:04 AM
Do a good cleaning and find where the leak is coming from there are several places a 740 could leak that much oil and not be a internal leak and a easy fix ,most common leak is the seal on the shift shaft or the backup switch