TRUCK SERVICE MANUAL
TRANSMISSION
HT 700D SERIES
Para 1-5/1-6
g. Towing. All lubricating and clutch apply oil is
d. Reverse (R). To move the vehicle backward,
provided by an engine-driven pump. Because of t he
idle the engine and shift the selector to the reverse
pump location ahead of the transmission gearing and
position. Depressing the accelerator will then cause the
clutches, the pump cannot be motored by pushing or
vehicle to back up.
towing the vehicle. Therefore, anytime that the vehicle
must be towed or pushed, the drive line must be
e. Range Selection. Drive (D) range should be
disconnected or the driving wheels must be lifted off the
selected for normal load, grade and traffic conditions with
ground.
an open highway ahead. Drive 3 (3) should be selected
for moderate grades and over-the-road operation with
1-6. SPECIFICATIONS AND DATA
restricted speeds.
Drive 2 (2) is appropriate for
The specifications, and data in the chart below
operating in heavy traffic. Drive 1 (1) should be selected
provide a quick reference to the major characteristics of
when need for speed control requires a hold condition
the transmission.
such as descending steep grades where additional
engine braking is required, or for operation on rough
terrain.
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