Engine Air Filter - Volvo VN 2013 Operator's Manual

94 Operator's Manual Vehicle Maintenance VN,
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Engine Air Filter

CAUTION
Continued operation with the gauge showing in the red may cause damage to the
engine. Operating the engine with a damaged filter allows dust to pass directly into
the engine, causing damage. Replace damaged or clogged filters.
The engine air filter is monitored by a pressure restriction gauge mounted on the air
filter housing. The gauge may be connected to the instrumentation to give a telltale
signal when the air filter needs to be changed; see the vehicle Operators Manual. A
manual gauge needs to be inspected regularly. Replace the filter according to the
gauge or after a maximum of two years, whichever comes first. Optional extra filter
insert should be changed with every third main air filter.
Pressure Restriction Gauge
W2006044