The 3000 Rugged Duty Series transmission from Allison Transmission is available with a 5th Range (overdrive) lockup pump mode for the vacuum truck industry, providing safe, easy split-shaft PTO operation, along with faster pumping speeds. Pumping in the mode lowers the engine operating rpm, enhancing engine life, reducing engine noise and improving fuel economy. Step-by-step operator inputs control split-shaft operation and automatically shift the transmission to 5th Range (overdrive). The transmission control module commands how and when the PTO engages, and monitors operating conditions to minimize potential damage and hazards. An output lock/unlock cycle improves engagement to avoid disruption of functionality. The mode’s soft start provides additional powertrain and pump component protection through torque converter operation, exclusive to fully automatic transmissions. 317/242-5000; www.allisontransmission.com.