CONTROLS AND INSTRUMENTS 4-65
PA1628 H3-41, H3-45 Operator’s Manual
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 on long, steep descents. Instead,
lower transmission ranges should be used
in conjunction with output retarder. Refer
to "Engine Brake" and "Transmission
Retarder" headings 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, engine
speed must not exceed 2,450 rpm.
Summary of Contents for H 2018 Series
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