Drivetrain power

Split-shaft PTOs and Transfer Cases both use driveline power to run another piece of equipment. Aside from being located in the drivetrain, the products completely differ in operation. We often hear these products referred to interchangeably. Make sure you understand what your customer needs, regardless of what terminology they use.

A Transfer Case is used to power the steer axle, converting a 6x4 into a 6x6 All-Wheel-Drive vehicle. This installation involves raising the cab. A forward-facing yoke connects to a driveline connecting to a front drive axle. Power is transferred to the steer axle and is available to use at speeds up to 35 mph.

Transfer Cases are used for some municipality applications, some fire tenders or Ag vehicles, and various off-road vocations.

Split-shaft PTOs are used to power a piece of equipment installed on the body, and their power outlet (yoke) is above the rail facing rearward. Another important distinction is that when engaged, the main driveline to the forward drive axle is disengaged. This means that while utilizing the PTO function, the vehicle must be stationary. 

Split-shaft PTOs are used in Oilfield applications, Hydrovac units, or anytime full engine power may be required to operate body equipment. These units have very specific torque input limits.

With either product you must communicate to Engineering where the unit will be located. If you are utilizing an aftermarket product, know that some OEs provide a temporary jack-shaft inserted in the driveline aimed at simplifying the aftermarket installation. You will need to provide the brand, as well as the location, of the product the body builder will install.

And now…

---

Believe It OR Not

Hippopotamus milk is pink. This is due to red colored chemicals created by the hippo to stop sunburn.