Initial fluid fill of new MT-647 transmission

[bevans6]

I hope to be filling and testing this puppy later this week.  I would appreciate guidance on best practice for initial fill and checking of fluid levels. I plan to use Dexron so I can see leaks from the color, and because it was dyno'd with Dexron.  I have a dipstick and fill tube, and have verified the markings against the pan per the Allison guide book.  My issue is mostly I don't know how to account for the volume of the cooler, lines and filter.  The ones I am using are quite big, and I calculate that it will take almost 5 liters of fluid to fill them, which is about a third of the volume for the transmission by itself.  Do I fill to the line, crank or run the engine in neutral, stop and refill, run in gear, or what?

Brian

[brmax]

Brian I would do the stop and refill afterwards, with the engine running and trans only in neutral. Then the shut down to check. I first thought about the torque converter but if dyno had been done i figured it had some fluid. Depending on length of run the cooler and lines should be filled in very short order, though any external filter takes a bit of time. So i wouldnt do any initial gear checks. Im not sure if your dip stick has a cold and hot mark because i cannot recall Brian if you had to change to a different oil pan.
It all sounds great 👍

Floyd

[bevans6]

My dip stick has a hot, cold and one other mark that I forget what it shows.  The pan is the middle depth, I think 5".  I checked the dipstick against the measurements in the book, but said book is outside and it's raining out...   

I'll have a lot to do, as with any engine startup after an install.  Coolant levels checked, etc.  Plus the engine hasn't run in 10 months, so it's going to smoke like a bear, and it's parked arse-end in in my shop...   

[luvrbus]

Make the initial fill run for a few minutes then refill it may take you a couple of times   

[busfan]

I'd jack it up get it nice and steady and take a couple runs up to 55 make sure fluid is released into TQC vanes before load is placed on them dry?  Least that's my experience, dunno if it holds true with this tranny, does not hurt thou, lest you fall off the blocks!

[chessie4905]

You mean to tell us that with all your tools and equipment, you don't have a damn umbrella??? lol With any car or bus automatics after rebuilding or replacing filters, we just added estimated fluid and checked in neutral at idle and once we got fluid on the stick, moved lever through the gear positions without moving vehicle , added more till it registered full cold, then road tested or ran while on lift or wheels off ground.

[blue_goose]

Your best way to check the fluid is with the key pad.  Can't do it until it is hot but you never need to use the dip stick  again.
Jack

[luvrbus]

I don't think he will be checking the fluid level on his transmission with a a key pad like we do Jack

[Oonrahnjay]

I don't think he will be checking the fluid level on his transmission with a a key pad like we do Jack   

       A little more info, Clifford?  Do you mean that the key pad check works with B500/400 but not with MT-64? series?   Thanks,  BH

[luvrbus]

The MT 647 is not a World Transmission,he has to check the fluid the old fashion way with a rag and dip stick 

[blue_goose]

I don't think he will be checking the fluid level on his transmission with a a key pad like we do Jack

Didn't look close enough at what transmission he will be using. 
Jack

[uncle ned]

Have to be careful around Jack.

If you look at his latest Coach you will find out he has lost half of his 8v92 some where.

Sounds funny also.

Uncle ned

[Oonrahnjay]

Have to be careful around Jack.

If you look at his latest Coach you will find out he has lost half of his 8v92 some where.

Sounds funny also.

Uncle ned

       Sounds funny?  That's what he said about you when you had the balance shafts down your trousers!!  Gotta be careful of those balance shafts ...