Parker 252 Series, Owner'S Manual

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Bulletin HY25-1806-M1/US
Owner’s Manual
252 Series
Parker Hannifin Corporation
Chelsea Products Division
Olive Branch, MS 38654 USA
22
Dodge/Sterling/Ram Installation
Overview (MY2011 & MY2012) (Continued)
Mobile Mode
This feature interacts with the transmission auxiliary shaft. The feature is activated by a switch (closed to ground)
in the cab after selected by a service tool. When active, this feature limits engine speed and road speed to
calibrated values. When this feature is selected stationary PTO and Remote PTO features are not available.
To operate the PTO in this mode the vehicle must meet the following conditions:
• Dealer selected “mobile” mode activated via Dealer proprietary service tool
• Upfitter 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
• Clutch not depressed (clutch interlock switch)
• No transmission, engine, accelerator, 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 activated 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.
Remote Stationary mode
This feature interacts with the transmission to utilize an auxiliary shaft to drive equipment. Activated by a switch
outside of the cab, this feature operates only when the vehicle is stationary. The input is switched to ground. Once
active, the engine speed is changed when the switch changes from Off (open circuit) to On (closed to ground) or
toggled in less than ½ second. Toggling the switch On-Off-On triggers the engine to change to the next calibrated
engine speed. This can be repeated for up to five engine speed settings. Repeated toggles cycles through the
engine speed 1-2-3-4-5-1-2 and so on. Remote PTO can be calibrated for one to five selectable engine speeds.
The engine speeds are also calibrated. Remote PTO feature has a higher priority than Idle Up. If the Remote PTO
feature is active the Idle Up switches are ineffective. The Idle Up or Stationary PTO feature cannot be
activated until the Remote PTO relinquishes control.
To operate the PTO in this mode the vehicle must meet the following conditions:
• Be in “park” position (vehicles equipped with automatic transmission)
• Upfitter provider (on/off) switch has been activated
• Parking brake applied (vehicles equipped with manual transmission)
• Clutch not depressed (clutch interlock switch)
• Vehicle must be running
• No transmission, engine, accelerator, brake or clutch switch faults present
• PTO must be correctly installed using the vehicle provided circuits
NOTE: For application specific information with respect to PTO and pump requirements and additional
vehicle information (wiring schematics, preset idle values, engine speed limits, and vehicle hardware/ software
requirements) please refer to the current RAM Body Builder’s Guide “PTO Operation & Installation Guide”.