General System Description

The AW 70/71 and AW 70L/72L models are four speed transmissions, where fourth gear is effectively an overdrive. The AW 70 and AW 70L transmissions differ in that the AW 70L incorporates a lock-up torque converter clutch. The AW 71 transmission is similar to the AW 70. The AW 72L transmission is a reinforced and modified version of the AW 71. The AW 72L differs from the AW 71 in the following areas: It has a new torque converter with higher torque amplification and a lock-up clutch; a split sun gear shaft in the planetary gear; modified ratios in 1st, 2nd, and 4th gears; recalibrated governor; new F2 freewheel with wider locking rollers; B2 brake with lighter brake bands and heavier steel plates and an additional air-cooled oil cooler.