Allison Transmission AT Series User Manual

23
ENGINE-DRIVEN PTO
Some models provide PTO mountings on the top and side of the torque converter
housing. The type of PTO installed will determine the operating procedures.
If the PTO driven gear is in constant mesh with the drive gear in the converter housing,
and a friction clutch is used to connect the PTO load, the PTO can be engaged or
disengaged at any time (except at engine speeds that exceed drive speed limits
imposed on the driven equipment). If the PTO is engaged by either a sliding gear or
dog clutch, the vehicle engine must be stopped to engage or disengage the PTO. Do
not exceed the drive speed limits of the driven equipment.
CONVERTER-DRIVEN PTO
A power takeoff may be mounted onto the mounting pad on the side of the
transmission. The PTO drive gear is turbine driven and thus provides infinitely
variable speeds. The power takeoff can be operated when the vehicle is either moving
or stopped. However, on some applications the PTO can be operated only when the
transmission is in neutral.
To operate the power takeoff, follow these instructions:
• Stop the vehicle, set the brakes, and idle the engine.
• Place the shift selector in a drive range.
CAUTION: Always allow the engine to return to idle speed before
shifting to a forward or reverse range after operating the PTO with
the transmission in neutral. Failure to return to idle will subject the
transmission to excessive shock loads which could cause clutch
and/or shaft damage.
POWER TAKEOFF
OPERATION

Allison Transmission AT Series Specifications

General

Brand	Allison Transmission
Model	AT Series
Category	Microphone system
Language	English