Controls and Instruments 4-63
PA-1628Operator's ManualH3-45 COACH
CAUTION
Do not allow your vehicle to "coast" in neutral «N».
This practice can result in transmission damage.
Also, no engine braking is available in neutral.
D (Drive)
Use this position for all normal driving conditions.
After touching this pad, the vehicle will start in first or
second range and will automatically upshift to a
higher range as output speed increases. As the
vehicle slows down, output speed decreases, the
transmission automatically downshifts to the correct
range. If a locked brake or a slick surface condition
should occur, the TCM (Transmission Control
Module) will command converter operation
(disconnect lockup) and inhibit downshift for a period
of time or until normal wheel speed has been
restored.
NOTE
IMPORTANT: Brake pedal must be applied when
selecting «D» (Drive) otherwise the transmission
will stay in «N» (Neutral).
NOTE
The transmission should normally be allowed to
shift by itself, but manual shifting can be done as
described below.
1 (First Range)
Select this range when pulling through mud and
snow, when speed control is needed for driving up or
down steep grades or when maneuvering in tight
spaces. This range also provides maximum driving
torque and engine braking power or retarder braking
effect. In the lower ranges (1, 2, 3 and 4), the
transmission will not upshift above the highest gear
selected unless engine overspeed is detected.
2 (Second Range)
Select this range when operating in heavy and
congested traffic. The transmission will start in first
and automatically upshift to second. When slowing,
the transmission will automatically downshift to first
range. Low ranges provide progressively greater
engine and retarder braking power (the lower the
range, the greater the engine and retarder braking
effect).
3, 4 (Third And Fourth Ranges)
Select these ranges when driving on moderate
grades or when load and traffic conditions limit
speed.
WARNING
Service brake should not be used to control the
speed of the vehicle on long, steep descents.
Instead, lower transmission ranges should be used
in conjunction with the output retarder. Refer to
"ENGINE BRAKE" on page25
and"TRANSMISSION RETARDER" on page25 in
Section 5 Other Features for details regarding both
systems. This procedure keeps service brake cool
and ready for emergency stopping.
CAUTION
When descending in lower ranges, care must be
taken that engine speed does not exceed 2,450
rpm.
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