Engine Start and Operation
255
Winterfront
Volvo Trucks North America, Inc. does not
recommend the use of winterfronts, shutters
or any other shield in front of the grille or
radiator package under normal circum-
stances.
Today’s electronically controlled engines
are designed to operate in cold tempera-
tures without a winterfront. These devices,
if not used properly, can cause higher ex-
haust temperatures, power loss, excessive
fan usage, failure of the charge-air-cooler
and a reduction in fuel economy.
Winterfronts are properly used in the win-
tertime during
very
cold weather with
sustained temperatures below -15
F
(-25
C). In these cases, coolant and inlet
manifold temperatures must also be care-
fully monitored and controlled.
CAUTION
Failure to remove the winterfront when
temperatures go above -15
F (-25
C)
could cause severe damage to engine,
charge-air-cooler and/or loss of fuel
economy.
If a winterfront is used, it must conform to
these specifications:
•
The grille coverage should be such
that airflow through to the charge-air-
cooler is at a uniform rate over the
entire area. This means that a single,
small opening in the winterfront is not
acceptable.
•
Air passage must be distributed evenly
across the grille and no more than
85% can be covered.
Please see your local Volvo Trucks dealer
for Volvo recommended winterfronts.
NOTE!
If there is engine or related dam-
age that can be traced to an improperly
used winterfront, the warranty is no longer
valid for those parts.
