Manual Transmission - PREVOST XL Series Instruction Manual

gear selected unless recommended engine
governed speed for that gear is exceeded.
CAUTION: Service brakes (foot pedal) should
not be used to control the speed of vehicle on
long, steep descents. Instead, lower transmission
ranges should be used (in conjunction with output
retarder(*)). When descending in lower ranges,
care must be taken that engine speed does not
exceed 2450 rpm. This procedure keeps service
brakes cool and ready for emergency stopping.
- (*) - Refers to "JACOBS engine brake" and
"Transmission output retarder" options.
See pages 4-4 & 4-5 for details regarding
both systems.

MANUAL TRANSMISSION

6 OR 7-SPEED
The manual transmission has 6 or 7 forward
speeds (including creeper) and one reverse.
NOTE: A Spicer
transmission, is specified with the 12.7 liter,
series-60, 400-horsepower
PS130-6B, 6-speed, is specified with the optional
11.1 liter, 325-horsepower engine.
PS145-7A, 7-speed
engine and a
07008
2 - 23
CONTROLS/INSTRUMENTS
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.
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.
recommended for shifting gears.
Downshifting
Double-clutching is also
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.
Double clutching is
recommended for