MacDon M155 Operators Manual - Manual (Page 313)

MAINTENANCE AND SERVICING
The air cleaner is also equipped with a restriction switch (A)
that activates a warning display and tone on the cab display
module (CDM) when the filter system requires servicing.
After servicing the filter, the restriction switch must be reset
by pushing the button at the end of the switch. Refer to
Air
Filter Restriction Indicator, page 297
IMPORTANT:
• Do NOT run engine with air cleaner
disconnected or disassembled.
• Over-servicing the filter element increases the
risk of dirt being ingested by the engine and
severely damaging the engine.
• Filter servicing should only be performed
when the CDM indicates “ENGINE AIR
FILTER” or at the specified interval. Refer to
Maintenance Schedule/Record, page 384 .
Figure 5.68: Air Restriction Indicator
Air Filter Restriction Indicator
During engine operation, the indicator shows the vacuum in inches of H
2
O and kPa. As the filter accumulates dirt,
the restriction increases.
When the indicator gauge reaches the CHANGE FILTER
mark (A), 25 inches of H
2
O [6.20 kPa], a warning tone will
sound and the cab display module (CDM) will indicate the
filter requires servicing.
IMPORTANT:
Over-servicing the filter element increases the
risk of dirt being ingested by the engine, causing
severe damage.
Service air filter ONLY IF indicator reaches the CHANGE
FILTER mark (A) or 2.5 inches H
2
O [6.20 kPa].
IMPORTANT:
After servicing filters, press the RESET button on
the end of the indicator (B).
Figure 5.69: Air Filter Restriction Indicator
169883
297
Revision A