SECTION 8 POWER TAKE-OFF (PTO)
INTRODUCTION
A Power Take Off (PTO) provides a way to divert some or all of the trucks engine power to another component. There
are a wide variety of PTO options available on a Peterbilt that are described below.
FIGURE 8-1. Power Take-Off Locations
TRANSMISSION MOUNTED PTO – GENERAL
MANUAL TRANSMISSIONS
This is the most common type of PTO that is used. On a manual transmission there are two locations for PTO’s. On
medium duty transmissions there are 6 bolt PTO locations on the right and left (Figure 8.2). On heavy duty manual
transmissions there is a 6 bolt PTO on the right and an 8 bolt PTO on the bottom left (Figure 8.3). There are also some
options for a thru shaft or extended countershaft PTO. On a thru shaft PTO, the counter shaft extends out through the
back of the transmission which can be used to power a PTO (Figure 8.4). When using a thru shaft PTO the vehicle must
be spec’d with the correct option as not all transmissions will be set up for use with thru shaft PTO’s. For more
information go to www.roadranger.com and enter “PTO Installation Guide” in the search bar in the upper right corner.
FIGURE 8-2. MD Manual Transmission FIGURE 8-3. HD Manual Transmission FIGURE 8-4. Thru Shaft PTO
