Operator`s manual

INSTRUMENTS AND CONTROLS
126
If at any time there is any question whether fumes are entering the cab,
determine the cause of the fumes and have it corrected as soon as
possible. If the vehicle must be driven under these conditions, drive
only with all windows open.
Protect against carbon monoxide entry into the cab. Keep the engine
exhaust system, cab and cab ventilation system properly maintained. It
is recommended that the exhaust system and cab are inspected by a
competent technician:
앫 At every engine oil change.
앫 Whenever a change is noticed in the sound of the exhaust
system.
앫 Whenever the exhaust system, underbody or cab is damaged.
To allow proper operation of the vehicle ventilation system, keep the
inlet grille at the base of the windshield clear of snow, ice, leaves and
other obstructions at all times.
DO NOT park the vehicle and let the engine run or idle for more than
10 minutes with the ventilation system control switch in the OFF
position. Even with the ventilation system ON, running the engine while
parked or stopped for long periods of time is not recommended. Entry
of carbon monoxide into the cab is possible with a poorly repaired,
damaged or corroded exhaust system or cab.
DO NOT run the engine in confined areas, such as garages or next to a
building, any more than necessary. The area must be properly
ventilated. When the vehicle must be stopped with the engine running
for more than a few minutes:
앫 Adjust the heating or cooling system to force outside air into the
cab. Do this by setting the fan to medium or high speed and with
the controls set in any position except for recirculation of air inside
of the cab.
앫 Keep the exhaust pipe area clear to help reduce the buildup of
exhaust gas under the vehicle.
vn-vhd.bk Page 126 Tuesday, July 1, 2008 9:44 AM