Bulletin HY25-1806-M1/US
Owner’s Manual
252 Series
Parker Hannifin Corporation
Chelsea Products Division
Olive Branch, MS 38654 USA
20
Dodge/Sterling/Ram Installation
Overview (MY2010 & Prior)
PTO Operation
The 3500/4500/5500 Dodge Chassis Cab vehicle, when equipped with either the automatic AISIN 6 speed or
manual G-56 6 speed transmissions, will allow for an aftermarket upfit with a transmission driven PTO (Power
Take-Off). The customer will have the ability to operate the PTO in either a “stationary” or “mobile” mode. The ve-
hicles will be factory set to the “stationary” mode. In order to select the “mobile” mode a Daimler Chrysler
Dealership is required to modify the vehicles settings using their proprietary Dealer service tool.
Stationary Mode
To operate the PTO in this mode the vehicle must meet the following conditions:
• Be in “park” positions (vehicles equipped with automatic transmission)
• Up fitter provider (on/off) switch has been activated
• Parking brake applied (vehicles equipped with manual transmission)
• Vehicle must be running
• No vehicle, brake or clutch switch faults present
• PTO must be correctly installed using the vehicle provided circuits
The customer has the choice to operate the PTO by utilizing the cruise control switches or by utilizing a remote
control (provided by the PTO supplier). To operate the feature using the cruise control switches the customer must
first activate the up fitter provided on/off switch. Next, the cruise control “on” switch is selected. Following this step
the “set” switch must be depressed. The vehicle is now in the PTO mode and is ready for use. In order to increase
or decrease the engine idle speed, to optimize the PTO function, the “accel” and “decel” cruise switches can be
used respectively. To disengage PTO operation and return to “standard vehicle operation” simply turn the up fitter
provided on/off switch to the off position.
To operate the PTO via a remote switch the customer must make sure the above conditions are met. It is vital
for proper operation that the PTO and remote have been installed correctly paying special attention to ensure
the vehicle provided wiring has been connected properly. This is the responsibility of the installer of the PTO and
switches/remote system. It is the responsibility of the PTO manufacturer to ensure that their electrical (switches
and remote) system is compatible with the vehicle's electrical architecture and software functionality.
Mobile Mode
To operate the PTO in this mode the vehicle must meet the following conditions:
• Dealer selected “mobile” mode activated via Dealer proprietary service tool
• Up fitter provider (on/off) switch has been activated
• Vehicle must be in “park” or “drive” position (vehicles equipped with automatic transmission)
• Parking brake must not be applied
• No vehicle, brake or clutch switch faults present
• Vehicle must be running
• PTO must be correctly installed using the vehicle provided circuits
The customer may choose to use the PTO while the vehicle is moving. To do so the PTO function must be acti-
vated prior to taking the vehicle out of “park”. This is accomplished by activating the up fitter provided PTO on/off
switch. At this point the customer may place the vehicle in a forward or reverse gear and have PTO operation. To
disengage PTO operation and return to “standard vehicle operation” simply turn the up fitter provided on/off switch
to the off position.
NOTE: For application specific information with respect to PTO and pump requirements and additional vehicle in-
formation (wiring schematics, preset idle values, engine speed limits, and vehicle hardware and software require-
ments) please refer to the Dodge Body Builders Guide by accessing “Wiring Diagrams” and choosing the appro-
priate links.
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