TRANSMISSION SHIFTING INSTRUCTIONS

Caution

The maximum safe operating oil temperatur e for MACK transmissions 121°C (250°F) for mineral - based oil, and 148°C (300°F) for synthetic - based oil. Continued operation with oil above this temperatur e will r esult rapid deterioration the s lubricating operties and NOT r ecommended.

Caution

T o avoid transmission damage, the vehicle must completely stopped befor e being shifted REVERSE any forwar d speed (and vice versa).

Caution

Never coast with the transmission Never coast with the clutch depr

Shifting Instructions for Allison Automatic T ransmissions

Please refer the applicable Allison automatic transmission operator ’ s manual provided with your vehicle for complete shifting and operating instructions.

MACK T306G Shifting Instructions

The T306G a six - speed overgear , non - synchronized transmission designed for general highway Shifting accomplished through a single shift lever using the traditional H

Upshift — Start out first gear and shift second, third, fourth, fifth and sixth gears, double - clutching from one gear the next.

Downshift Downshift reverse order (sixth through double - clutching through each gear