Volvo D12, Operator'S Manual

Page: 123 / 214

Maintenance 119
Engine Air Filter
Before working on or inspecting a vehi-
cle, set the parking brakes, place the
transmission in neutral and block the
wheels. Failure to do so can result in un-
expected vehicle movement and can
cause serious personal injury or death.
The engine air filter is monitored by a pres-
sure restriction gauge mounted on the air
filter housing. The gauge may be connected
to the instrumentation to give a telltale sig-
nal when the air filter needs to be changed;
see the vehicle Operator’s Manual. A man-
ual gauge needs to be inspected regularly.
The filter should be replaced according to
the gauge or after a maximum of two years,
whichever comes first. Extra filter insert
should be changed with every third main
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 di-
rectly into the engine, causing damage.
Replace damaged or clogged filters.
To change the filter, remove the fasteners
around the outer cover and remove the
cover. Pull out the filter from the container
and discard.
Make sure the new filter seal is in good
condition. Install the new filter in the filter
container so the seal enters the guide in the
back of the container. Reinstall the cover.
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