Service Manual

627333-A 5-3
Cab
Primary Fresh Air Filter
Primary fresh air filter is located in roof overhang in
front of the cab.
Filter removes dust particles drawn into air system and
is partially cleaned each time cab door is closed, when
back pressure flushes primary air filter. Before
removing filter, close all windows and door. Back
pressure from cab helps dislodge loose dirt on
underside of filter.
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WARNING: Inadequate sealing may
cause filter malfunction and personal
injury could result. Isoamyl Acetate,
which has a banana-like odor, may be
used to check seal. Periodically inspect
door gasket for damage.
IMPORTANT: Once filter is removed from its protective
packaging, immediate installation must follow.
Exposure to the environment reduces validity
of filter.
NOTE: Store replacement filters, in original packaging,
in a clean dry area away from exposure to any
chemicals. If stored in cab, floor should be free
of any foreign material.
Remove Secondary (Vapor Particulate) Fresh Air Filter,
clean or replace.
NOTE: Vapor absorption or carbon section of filters,
cannot be cleaned. Replace filter if odor, taste
or other indication of contamination is
detected.
Recirculation Filter
Recirculation filter purifies air for HVAC pressurization
fan and draws air from inside cab. Filter must be in
place or pressurization fan motor will fail prematurely.
Recirculation filter in the only filter for pressurization
fan.
NOTE: Optional charcoal filters are available from your
local dealer.
NOTE: Any chemical contaminants allowed into cab
while door is open will be filtered.
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WARNING: Charcoal filter is used to
lower levels of contamination in cab
during spraying operations. It does not
replace or eliminate need for personal
protective devices. Follow all
recommendations of chemical
manufacturer regarding personal
protection, handling and disposal of
chemicals.