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Title: Allison ht 740 valve body help
Post by: hargreaves on February 15, 2010, 04:48:20 PM

I am looking for a blow up of the valve body on a 740, I'm looking to adjust the shifts and need to know the shift valve locations. If anyone can help it would be greatly appreciated. Gerry

Title: Re: Allison ht 740 valve body help
Post by: compedgemarine on February 15, 2010, 08:03:23 PM

did you try the Allison website? I know they have a lot of the manuals on there you can download.
steve

Title: Re: Allison ht 740 valve body help
Post by: luvrbus on February 15, 2010, 08:11:55 PM

You need foldout 20B and 21A what gear are you trying to change.
Look at your 3 digit number on the governor if it does not have a M in the digits the shift points are going to be hard to set right with out changing the governor

good luck

Title: Re: Allison ht 740 valve body help
Post by: hargreaves on February 16, 2010, 08:50:54 AM

Thanks Luvrbus, I have to go under the bus to check the governor. The shift point I want to change is third to fourth. It shifts up at about 40 mph in a closed throttle situation. When I step on the throttle it atomatically shifts back to third. I would like to get it to not shift at least until 45 mph.

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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: hargreaves on February 15, 2010, 04:48:20 PM