Allison Transmission

[John Wyatt]

--- In WanderlodgeForum@yahoogroups.com, "jburgessx2" wrote:

I want to service my Allison transmission but was unsure which one I had. I
have the Bluebox paperwork but it lists two different model numbers: MT 644 and
MT 654CR. The paperwork states "up to 300 hp." I was sure this 6V92 was 330 hp
with the turbo. I don't believe the motor or tranny was changed - at least I
have no reason to believe it. What's the easiest way to tell which tranny I
have? Or, does it make any difference when it comes to the filters?

Thanks.

Jerry
85 PT40
Port Hueneme, CA


Hi Jerry,

I used to own a 1984 ½ PT-36 with the 6V92 - 330 hp engine. That coach had an
Allison MT 654CR Transmission. The Internal Filter kit that I used was Allison
number 29502302 and the spin-on filter that I used was a Fram PH3519A. The
Allison MT 654CR Transmission is a 5 speed and I believe the Allison MT 644 is a
4 speed.

John
91 40' WB
Batavia, OH