Spicer Two-Speed Dual Range Drive Axles - Manual (Page 6)

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Dual Range Driving
Dual Range Tandem Axle Features
Driving a truck in heavy-duty, on-off highway operations is a pleasure with the
Dana Dual Range concept. Two axles-in-one give you flexibility for easy driv-
ing, productive hauling regardless of operating conditions.
Power when you need it; speed when you want it. The Dana dual range axle is
designed to provide deep-hole reduction for power in off-highway driving and
fast ratio for top speeds on the highway.
In LOW range the axle operates as a strong double reduction axle for tough
operating conditions. In HIGH range, it functions as a strong single reduction
axle for high-speed operations.
Shifting the Dana dual range axle is easy and quick. An air control valve
selects the axle ranges you want. A flip of the valve lever is all that is neces-
sary.