General Recommendations; Air Cleaner Restriction Indicator - PREVOST H3-41 Maintenance Manual

FIGURE 32

7.3 GENERAL RECOMMENDATIONS

The following maintenance procedures will
ensure efficient air cleaner operation:
1. Keep the air cleaner housing tight on the air
intake pipe;
2. Make sure the correct filters are used for
replacement;
3. Keep the air cleaner properly assembled so
the joints are air-tight;
4. Immediately repair any damage to the air
cleaner or related parts;
5. Inspect, clean or replace the air cleaner or
elements as operating conditions warrant.
Whenever an element has been removed
from the air cleaner housing the inside
surface of the housing must be cleaned with
a soft clean cloth;
6. Periodically inspect the entire system. Dust-
laden air can pass through an almost invisible
crack or opening which may eventually cause
damage to an engine;
7. Never operate the engine without an element
in the air cleaner assembly;
CAUTION
Do not ignore the Warning given by the air
restriction indicator. This could result in
serious engine damage.
8. Store new elements in a closed area free
from dust and possible damage.
R
ESET BUTTON
PA1621 Maintenance Manual All Series | Revised May 2018
SECTION 03 : FUEL SYSTEM

7.4 AIR CLEANER RESTRICTION INDICATOR

A resettable restriction indicator may be installed
on the engine air-intake duct, clearly visible from
the rear engine compartment.
monitors the vacuum level between the air
cleaner and the engine. A red marker is
displayed when the air cleaner is clogged and
must be replaced. Reset by pressing on the
indicator's extremity.
FIGURE 33: RESTRICTION INDICATOR
NOTE
Some vehicles may be equipped with a slightly
different "clear body" restrictor indicator. This
type of indicator is usually combined with a
warning light located on the rear control panel.
Reset by pressing on the indicator's extremity.
The indicator
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