[jdkskyking]

A ZF “Transmission” was not designed for a Power Take Off option, only an Allison transmission. 

The Allison Transmission that my coach came with did not come equipped with the option to mount a PTO. 

I purchased a used/salvaged Allison transmission that included the necessary parts to modify my transmission. The Allison shop in Springfield Missouri did the work. This modification lengthens the transmission by 4”. The drive shaft also was modified. The extra length did not negatively impact the geometry of the driveline. 

   

   

   

   

In my motor coach, “I am of the opinion”, that the only way for my engine cooling system to function normally AND for the ZF Steering Gearbox to function as designed, each system must have a independent hydraulic pump supplying hydraulic fluid flow. 

The two pumps will share the same hydraulic reservoir, hydraulic filter, and hydraulic cooler otherwise, the pumps operate independently of each other. 

Engine driven VICKERS V20 for ZF Steering Gearbox.

Allison Transmission/Chelsea PTO/ DANFOSS X20 Hydraulic Pump for Multi-Wing Cooling Fan Hydraulic Motor. 

Someday I’ll summarize the entire journey and tie it all together. I know the recipe for success for my bus. Richard has been along for the ride as well. 

JK