M915A1 4500RDS conversion

[panzerwillie]

Being working on this for a while gathering parts and other things, i have done this to a few Cat 3406 with great success.
Finally yesterday was able to take off the Allison HT 754 i belive its call that which takes me to my question , i know some of the lates M917 had i belive 4070 HD electronic Allison now my question does the hardware work from the 754 to the 4070 if it does the 4500 should bolt on , i do not have both next to each other to meausure but will next weekend. This set up looks like Mack E7 connection where the flex plate and starter ring gear as well antiballon plates are all together instead of ring gear on conveter and flexplate on crank shaft like the Big Cats, does anyone know or have pictures of a 4070 of a big cam 3 .
Will meausure everything this weekend when i have both transmission together this weekend thx. .

 

[panzerwillie]

More pictures

 

[panzerwillie]

Just looking for pictures of the late electronic 4070HD apart from the cummins BC3 to see how it was connected to engine , i think i can figuere out this weekend side by side if not will make a trip to local Allison dealer but does guys are useless you had to bring them all the group # for the parts..

 

[panzerwillie]

I guess no one knows , more to follow

 

[fuzzytoaster]

You're treading into M915A4 territory. Big Cam I & III mated to 4050 and 4500SP. Check the TM's related to them and maybe you'll find what you're looking for. The M916 with Allisons dubbed the "M916A0E1" don't have any supporting documentation on them. I've had a few but no more.

 

[panzerwillie]

Thank you for the reply A4 are Detroit 60 series engines which i am very familiar with and the set up is like the Volvo Cummins ISX engine as well the Cats mayme will look in to TM on M917 that had more módem Allison ..

 

[panzerwillie]

I look at al the TMS here and have downloaded before and sure it mentions the HD4060-70 but maily they are for replacing sensors, harness , inteligente. Tcm ect but nothing on replacing transmission try to located parts manual but no luck did find some pictures where it shows the ring gear on converter which makes me belive flexplates and converter support hub will be on the crank , will do more intell.

 

[fuzzytoaster]

Thank you for the reply A4 are Detroit 60 series engines which i am very familiar with and the set up is like the Volvo Cummins ISX engine as well the Cats mayme will look in to TM on M917 that had more módem Allison ..

The M915A3 are the Detroit 60.
The M915A4 and M9154R2 are Cummins 400 BCI & BCIII mated to HD4050 & 4500SP respectively. - I have 5 of these trucks.

 

[panzerwillie]

Ok thank you for the update

 

[panzerwillie]

In that case would you be Kind to provide me with the serial numbers from those 2 transmission HD4050 and the 4500SP maybe i get Lucky and in Allison Hub they have the Torque conveter group for cummins BC which is what i need..
Thank you

 

[panzerwillie]

Disregard i got the engineering drawing with what i need will try to figuere it this weekend thx for sll the help

 

[panzerwillie]

Getting 4500RDS ready

 

[panzerwillie]

Finally getting the group converter parts and bolts together will post some pictures and parts number here in the next few weeks ...

 

[panzerwillie]

Got another 4500 RDS for future projects

 

[panzerwillie]

Finally got all the parts needed to connect my 4500 RDS to the big CAM but will work on any 855 to N14 family and with any 4000 series Allison, here is a list off all parts...

# 29505969 GEAR FLEXPATE 103 Teeth
#29505976 FLEXPATE x 3
#29505977 HUB ADAPTER
#2950578 WEAR PLATE
#29505968 FLEXPLATE ADAPTER
You also need bolts which you can get from Allison or any good bolt place they need to be no less that 10.9 grade but i got them from ARP
You need 3 packages of
ARP 671-1005
They are M8x1.25x.45mm
That will connect your ring gear and flexplates to the flexplate ADAPTER.
ARP 661-1002
They are M8x1.25x.25mm
Will attached FLEXPLATE ADAPTER to torque converter
There also 2 M6x1.0 bolts that hold flexplates to ADAPTER hub while you put all together .
Have not try it yet but i belive the original crank bolts will work , i think i cover everything but if not will add to it , next week will get PTO and PUMP before i put transmission inn.....

 

[panzerwillie]

Not cheap by any means but needed for the job, i got everything from Weller Truck parts in Michigan with the help of Joshua in the Allison Dept his knowledge is great.
There is a rear support needed if not ussing the front support will post the number and picture when i get it...

 

[panzerwillie]

Finally install the PTO now will try to borrow a jack to install it , more to follow...

 

[panzerwillie]

Got around today to put together the flexplate and ring gear which are glue to the face of the ring gear just to hold it in place for assembly , use the flexplate ADAPTER to sándwich it all togethere to cure , used all 12 bolts and torque to specs, hopping next weekend i can install it.
More to follow

 

[panzerwillie]

Did a wood alike floor mat marine water ressistand
More to follow

 

[panzerwillie]

Boltted back some of the cab stuff , also cut the center consol so i can put a passanger air ride sit, looks like next weekend will install the 4500RDS.