Holiday Trip 2012, Owner'S Manual

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2012 Trip
During each oil change inspect the
engine side of the radiator/CAC
assembly for foreign objects that may
cause restriction.
Spraying degreaser on the charge air
cooler, as well as using a steam cleaner,
will not damage the CAC. However,
pressure washer and steam cleaner
nozzles placed too close to the CAC
can bend the fins. The recommended
cleaning procedure for the CAC and the
radiator is to use a bucket of mild soap
and water. Carefully wash with a bristle
brush then rinse with minimum water
pressure, standing back a distance to
avoid bending the fins.
When performing maintenance, it is also
necessary to inspect other components of
the cooling system. The charge air cooler
and radiator also requires an inspection
for cracks, broken welds, secure
mounting, and general cleanliness.
Coolant Hoses:
Inspect coolant hoses and connections when
checking engine or transmission fluids. Look
for any signs of chaffing at hose restraints
or sharp edges. Indications that hoses have
reached the end of service life include cracking
or swelling around clamps and connections.
Oil leaks can also deteriorate hoses.
Overheating can be caused by a collapsed
hose or a clog caused by rubber shedding from
a rotten hose. Replace any hose found to be
cracked, swollen or damaged. Connections
should be inspected periodically and hose
clamps tightened.
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tranSmISSIon
The Allison World transmission incorporates
the World Transmission Electronic Control
(WTEC) system. The system is compromised
of four major components connected by a
wiring harness: the Transmission Control
Module (TCM), throttle position sensor, three
speed sensors and the remote shift selector
(keypad). The TCM processes information
received from the throttle position sensor,
speed sensor, pressure switch and shift
selector to provide optimum shift quality. This
is accomplished by matching transmission
and engine RPM during a shift to establish a
desired shift profile within the TCM. Another
feature of the transmission is the ability to
“learn” or “adapt.” The electronic control
system optimizes shift quality by using
“Adaptive Shifting.” A wide variety of varied
shift conditions is required before optimizing
shift quality. Generally, five typical shifts of
a consistent shift type are needed to optimize
shift quality.
Shift Selector
The keypads on the shift selector are R
(Reverse), N (Neutral), D (Drive), Up and
Down arrow, and Mode button. The digital
display shows gear selection (Select), and gear
attained (Monitor).
A Trans Service icon (wrench) on the
instrument panel will illuminate when
maintenance is due.
NN (Neutral) will
appear in the display
window when the ignition
is turned On. This
indicates the transmission
is in neutral. If NN does
not display when the
ignition is turned on,
there is no power to the
shift selector and the
transmission will not
allow the engine to start.
No display is an indicator
of electrical problems
with the engine batteries,
TCM, or the shift selector.
Keypad Functions:
Select Reverse by pressing R. RR will
display.
Select Neutral by pressing N. NN will
display.
Select Drive range by pressing D. The
highest forward gear (6th) appears on
the Select (left) side of the display. The
Monitor (right) side of the display will
show first gear displayed as 6 1.
As the transmission up-shifts, the Monitor
side of the display will show subsequent gears
attained. The Up and Down buttons are used to
select a higher (if not in 6th) or lower (if not in
1st) forward gear. These buttons will not select
Drive when the transmission is in neutral or
reverse.
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Arens shift control