Aftermarket PTO/pump on Allison transmission

[162tcat]

I know that people have installed aftermarket (non surplus or take offs) PTOs on the M939 trucks with the allison transmission. My question is has anyone installed a PTO with the hydraulic pump mounted directly to it? It looks like a tight fit but I'm curious to see if anyone has done it. It's way too expensive to buy and find out it won't work.

Thanks in advance

 

[aheilmann68]

I just put a chelsea power shift pto in and it required a little trimming and lots of profanity. Its tight. Someone might be able to comment but from what I was looking at most are driveshafed.

 

[patracy]

Not sure if you'd be able to fit a decent sized pump in place as I know the side of the PTO is like 1/2" from the frame rail. I know installing my PTO was a complete pain. Almost to the point where I was ready to pull the transmission out and install it and install them both as a module.