Allison auto and c15/3406e

I don't know about the Allison but I tried to put an Eaton 18 spd autoshift plus behind a Acert and was told the electronics were not compatable.(Acert ECM cant talk to Eaton computer.

 

Rob
A quick search finds.....

133-1859 ADAPTER GP-ENGINE TO TMSN FOR USE WITH ALLISON HD TRANSMISSION

The Allison ATEC requires connection to either the SAE J1587/J1708 or J1939 data link to communicate to the ECM.
OEM provided and installed components required:
1) SAE J1587 or J1939 Data link connection to the Allison transmission control.
2) Connection to ECM Service Brake #2 and Neutral Switch Input as per “Transmission Style Parameter Switch
Input Table”.
22.4 Allison WTEC Series
The Allison WTEC requires connection to the SAE J1587/J1708 or J1939 data link to communicate to the ECM.
OEM provided and installed components required:
1) SAE J1587 or J1939 Data link connection to the Allison transmission control.
2) Connection to ECM Service Brake #2 and Neutral Switch Input as per “Transmission Style Parameter Switch
Input Table”
Customer Parameter programming required:
1) Transmission Style programmed to match components connected to ECM Service Brake #2 and Neutral

 

I have seen Many acert engines with an AS3 box behind them, Eaton actualy have a file for programming an autoshift to work with the acert. Im not sure about autoshift plus that has a fully automated clutch, but would think it would be no different as it will still use the same datalink wires to talk to the engine ECM.

 

Rob, I don't see an issue except for maybe the ability to stand the torque of a newer engine as those old ones weren't used on anything that made more that about 1500 ft-lbs.

i have also also heard that they take a lot more power from the driveline to operate than a manual.

 

I do not know about the Acerts, but we had a customer with auto shifts and 3176's those units were scary to drive, the delay in shifts was 3 to 5 seconds coasting to to shift, then it shifted, and waited 3 to 5 seconds to add power. Scary ####!
The 740,750's you would need to add a modulator cable. You would have to have the power and torque, program in the engine that is compatible with the transmission.
The Cat computer when trying to talk to the Eaton computer is Just straight DUMB, take a Detroit, with an auto-shift and a Cat out, there is a fannominal difference one is slick one is stupid.
Just a thought!

 

Not 100% sure on the exact model 740 but we replaced that in the race truck and now use the HD4060 Allison Transmission now and remove the electronics so as to shift it manually and it can take a lot of HP. Mind you its only 6 speed so not ideal for on Hwy but great for racing with Big HP. These are near impossible to kill.
The HD 4500 Series is also Tough with different ratio's.

 

But there again JohnP3 is a Cat hater!!!!

 

It's the "plus " part that won't work with the Acert. Supposedly the plus transmissions are programmable to keep you in the sweet spot. That's the part I was looking for.

 

I do not hate Cat, Like I said take a Detroit with an 18 speed auto shift, for a drive, I preffered the 3 pedal, it learns on the first pull what the load is and it starts out in second if the load is heavy it will down shift to 1st, it Jake's to down shift, and shifts faster and smother than 95% of drivers could ever do. Then take out one with a Cat, many big used truck yards have a choice, go and ask. Please do come back and tell us how smooth, it shifts and how secure you would be going up a 7% hill with max weight. After you do the test you can chose what you would call there computer.
Just a thought!