User Manual

Page 14 of 39 DETROIT DDC-ENG-MAN-0001
BOTTOM PTO OPERATION
1) Running Bottom PTO during normal vehicle operation.
Operation of the Bottom PTO during normal vehicle operation (while driving the vehicle with the
transmission shifting gears normally) is NOT ALLOWED at this time.
NOTE: This Bottom PTO is approved for launch gear and stationary use only.
2) Moving of the vehicle with Bottom PTO engaged (Launch Gear Use).
NOTE: Launch gear PTO operation requires Citrine CEAA+ level software or newer. Older
levels of software are NOT capable of utilizing this vehicle operation mode.
This configuration is only allowed when launching from a complete stop, utilizing the vehicle’s launch
gear (example: roll-off application).
To operate in this manner:
o Make sure the transmission is in neutral,
o Engage the Bottom PTO,
o Shift transmission into gear with foot on the service brake,
o Release brake to get the vehicle moving.
o To disengage the PTO, unload the PTO/system first.
o Then disengage the PTO while moving or stopped.
NOTE: The transmission may not shift gears while the vehicle is being driven with the Bottom PTO
engaged. Manually shifting gears with the Bottom PTO engaged is also not allowed.
3) Stationary Operation:
Bottom PTO’s from both Chelsea & Muncie are available for use with the DT12. See the information
below which details the specifics regarding each since their limits, features, and adaptation to the
transmission are different.
NOTES: Maximum output shaft speed for Chelsea Bottom PTO’s is 2000rpm. (If higher rpms
are needed, special approval is needed directly from Chelsea.
Maximum output shaft speed for Muncie Bottom PTO’s is 2500rpm.
Higher Bottom PTO output speeds can lead to PTO and/or vehicle equipment damage.