AUTOCAR Xspotter 2014, Operator'S Manual

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Accessories should not be active when driving
in warmer weather so they do not affect the
operation of the engine.
Cold weather operation recommendations:
• Use engine lubricants of lower viscosity.
• Ensure the concentration of antifreeze in
the coolant is sufficient to prevent freezing.
• Give particular attention to the condition of
the batteries and test them frequently to
ensure sufficient power for starting. A dead
battery may freeze, rendering the battery
useless.
To prevent wear and possible damage to the
engine when it is cold, gradually bring it up
to operating temperature before operating at
high engine speeds or full load. After starting
and before moving the vehicle, run the
engine at 800 - 1000 rpm for 3 – 5 minutes.
Operate at partial engine load until the coolant
temperature reaches 165°F (75°C).
Gas Engines
Cold weather operation may require changes in
operating practices, maintenance procedures,
lubrication or fuel. Certain accessories such
as an engine block heater can make winter
operation easier. Contact your authorized
Autocar service facility for the correct
accessories and installation information.
When starting a cold engine, let the vehicle idle
for five minutes. This will allow coolant to warm
the fuel and ensure that the low-pressure lines
do not freeze up. On extremely cold days, the
vehicle may have to idle for a longer period
until the fuel warms adequately.
For more information refer to
“Cummins
Driver Tips For Cummins Westport ISL G
And ISX12 G Natural Gas Truck And Bus
Engines - Bulletin 4971392”
available from
your local Cummins distributor.
Engine block Heater (Optional)
An electric engine block heater can be installed
for keeping the coolant hot when the vehicle
is parked. The heater is mounted through the
side of the engine block with the heater coils
in the coolant jacket. The heater does not
interfere with normal operation and can be
permanently installed.
Oil Pan Heater (Optional)
Oil pan heaters aid low temperature starting by
improving oil flow to critical parts in the engine.
This helps prevent engine wear. They are
similar to block heaters and are wired into the
same plug as the engine coolant heater.
Fuel Filter Heater - Diesel (Optional)
If running in very cold weather, a heated fuel
filter should be added. A number of different
fuel heaters are available as options. They
are electrically heated and regulated by a
thermostat. They are typically built into the
primary fuel filter housing.
Winterfront (Not Recommended)
Autocar does not recommend the use of
winterfronts, shutters or any other shield in
front of the grille or radiator package.
These devices, if not used properly, can cause
higher exhaust temperatures, power loss,
excessive fan usage and a reduction in fuel
economy. Today’s electronically controlled
engines are designed to operate in cold
temperatures without a winterfront.
Winterfronts can be properly used for overnight
parking in the winter or very cold temperatures
(below -5°F [-20°C]). In these cases, coolant
and intake manifold temperatures must be
carefully monitored and controlled.
Refer to the
“Cummins ® Owners Manual”
for
more information on winterfront usage.
877-973-3486 AWE 00054 Rev. 002 66
ACTT Xspotter Operator Manual