Allison 5sp: The Autopsy on my Trans.

[JoshH]

Weird. Thanks for the info.

 

[dmaxed 67]

sorry for ignorance what is the tube for??

 

[Mike L.]

sorry for ignorance what is the tube for??

The tube flows control main pressure only in forward gears ( why do they call it a reverse tube? ) and hydraulicly locks the gain valves ( 2 valves, one above each trim valve ) and forces fluid through the hole in the gain valve to feed the clutches otherwise it would force the gain valve to stroke to create pressure. ( ATS Copilot )

 

[dmaxed 67]

is this somethoing you would only use ona built trans,is install hard??

 

[Dozerboy]

The tube is in the stock trans, but you have to mod it for the install of the Co-pilot