Air Cleaner Restriction - Doosan DX140R Shop Manual

Air Cleaner Restriction

Maintenance Check
Mechanical Indicator
Do not remove the felt washer from the indicator. The
NOTE:
felt washer absorbs moisture.
A mechanical restriction indicator is available to indicate
excessive air restriction through a dry-type air cleaner. This
instrument can be mounted in the air cleaner outlet or on the
instrument panel. The red flag (1) in the window gradually rises
as the cartridge loads with dirt. After changing or replacing the
cartridge, reset the indicator by pushing the reset button (2).
Restriction or vacuum indicators need to be installed as close as
possible to the turbocharger air inlet in order to obtain a true
indication of restrictions.
Never operate the engine without an air cleaner.
Intake air must be filtered to prevent dirt and debris from
entering the engine and causing premature wear.
Vacuum Indicator
Vacuum switches actuate a warning light on the instrument
panel when the air restriction becomes excessive.
QSB4.5 Engine
CAUTION!
Figure 46
Figure 47
SP001671
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