Automatic Transmission - PREVOST Motorcoach XL Series Operator's Manual

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R.H. LATERAL CONSOLE
1. Tag axle unloaded or retractable
Vehicle can be fitted with either the standard tag
axle unloaded system or the optional retractable
tag axle system. When valve is switched to the
"Wheels up" position, the tag axle air springs are
unloaded (depleted) with the tag axle unloaded
system or, tag axle is raised with the retractable
tag axle system. For both systems' descriptions,
see page 4-21.
2. Parking brake control
See
"Combination
brakes" on page 2-25.
3. Door override
In the event of a malfunction in the front entrance
door air lock mechanism, press this button to
release air lock (see page 3-4).
4. Parking brake override (Optional) or
Low-Buoy (Optional)
Parking brake override:
operation, primary system air pressure drops
below 40 psi (276 kPa), spring-loaded parking
brakes will automatically be applied at full capacity
on drive axle to stop vehicle. Cause of pressure
loss should be determined and corrected before
proceeding. However, vehicle may also be
emergency
and
parking
If during normal
equipped with an optional parking brake release
system (Parking brake override) which will allow
driving the vehicle for a short period of time to a
safe parking area. To operate, push and hold
down the control knob with vehicle in motion.
Low-Buoy: Low-buoy option is used to lower the
coach by approximately 4 inches (100 mm) when
valve is positioned towards "LOW-BUOY".
system description, see page 3-3.
5. Auxiliary Preheating System Timer (Optional)
(ESPAR (shown) OR WEBASTO)
See pages 2-43 & 44 for description of both
heaters.
5A. Preheater switch (Opt. with item #5)
Push down rocker switch to turn "ON" Preheating
system; supplementing Central Heating System
when required.
"OFF"
automatically
temperature.
6. Transmission push-button shifter
Use shifter to select forward, neutral or reverse
gears
of
transmission.
TRANSMISSION"
described on next page.

AUTOMATIC TRANSMISSION

2 - 20
CONTROLS/INSTRUMENTS
Preheater will turn "ON" and
depending
on
"AUTOMATIC
system
operations
18117
For
coolant
are

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