CONTROLS AND INSTRUMENTS
Note: The Spicer PS145-7A, 7-speed
transmission is specified with the 400
horsepower engine and a PS130-6B, 6-speed, is
specified with the 330 horsepower engine
option.
The transmission shift lever located to the right
of the driver's seat is used to select gears. The
coach is equipped with a safety switch to
prevent accidental starter engagement if the
shift lever is not in the neutral position.
When shifting from neutral to first or reverse gear,
depress the clutch pedal fully to activate the
clutch brake. This makes it easier to shift from
neutral to forward or reverse.
Caution: To avoid damaging the clutch brake
mechanism, do not fully depress the clutch
pedal when the coach is in motion.
MANUAL TRANSMISSION SHIFTING PATTERN 07008
UPSHIFTING
Always start moving the coach forward with the
transmission in first gear, then shift to second,
third, fourth, fifth, sixth and seventh gears (if
applicable). Do not skip gears. Do not shift to the
next higher gear until the engine speed has
reached 1,900 rpm. Double clutching is
recommended for shifting gears.
DOWNSHIFTING
Double-clutching is also recommended for
downshifting. Always change to a lower gear to
avoid engine lugging. Use lower gears when
driving uphill or downhill, and when driving on ice,
snow or mud (minimum 1,400 rpm).
Use lower gears when driving downhill to make
full use of engine compression. Never let the
engine operate above 2,450 rpm.
Under normal driving conditions, it is not always
necessary to downshift through all gears.
Downshift from seventh to first gear after bringing
the coach to a complete stop.
Caution: Never let the engine operate above
2,450 rpm.
Caution: Always leave the shift selector in
neutral when the coach is parked.
Caution: To prevent premature clutch wear,
always start driving the coach with the
transmission in first gear.
Caution: Before ascending or descending a long
or steep grade, reduce speed and shift into a
lower gear. Use lower gears to control speed and
avoid prolonged or frequent braking which will
result in brake overheating and reduce braking
effectiveness. To reduce brake wear, use the
JACOBS engine brake when descending a steep
grade.
Warning: Shifting into lower gears on slippery
surfaces should be done with caution. Sudden
engine compression braking could cause drive
wheels to lock-up, and may result in loss of
control.
EATON TRANSMISSION
Two Eaton transmission options are available:
the Eaton AutoShift 10-speed semi-automatic
transmission and the 7-speed automatic
transmission.
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