TM 9-2320-302-10
0005 00-7
OPERATION UNDER USUAL CONDITIONS - CONTINUED
0005 00
DRIVING TIPS - CONTINUED
2.
Avoid Over Steering. Become familiar with steering characteristics of vehicle before
attempting maneuvers in limited space.
3.
Drive Efficiently and Economically.
a.
Drive at highway speed. Recommended normal highway cruising range is 1800 -
1900 rpm. If operating on hilly terrain, in high winds, or in other conditions that
make it impractical to operate without reserve power, operate vehicle in lower gear.
b.
When slowing for posted speed zones, remain in D (Drive) position and reduce
engine rpm.
c.
When driving uphill (under load), proper use of gears shortens time on hills and
minimizes amount of shifting. As vehicle starts uphill, press accelerator pedal as
required to maintain speed.
WARNING
DO NOT use engine brake if road surfaces are slippery. Use of engine brake
on wet, icy, or snow-covered roads could result in loss of vehicle control.
Failure to follow this warning could result in death or injury to personnel or
damage to equipment.
d.
Use engine as a braking force. The vehicle is equipped with an engine braking sys-
tem that enables the engine to act as a brake. The engine brake should be used for
descending grades and is most effective between 1750 - 2100 rpm.
(1)
If maximum engine braking is required, move both engine brake selection
switches up to engage six cylinders.
(2)
If less than maximum engine braking is required, move left engine brake
selection switch up and right engine brake selection switch down to engage
two cylinders, or left engine brake selection switch down and right engine
brake selection switch up to engage four cylinders.
e.
When downhill braking:
(1)
Select a gear that allows engine, with engine brake applied, to control vehi-
cle speed with engine rpm at or below 2100 rpm without applying service
brakes. As downgrade is approached, progressively select a gear that, when
combined with engine brake, allows you to maintain engine speed of 1750 -
2100 rpm.
(2)
As engine speed exceeds 2100 rpm, use one positive application of service
brakes to slow engine speed to 1650 rpm, release engine brake, downshift
one gear, and apply engine brake. Repeat this procedure until engine speed
can be maintained at 1750 - 2100 rpm.
