3-12. CHECK AND CLEAN CAB AIR FILTERS (Cont).
b. Check and Clean Cab Fresh Air Filter.
(1) Open fresh air filter door (7), remove four wingnuts (5), and filter mounting frame (4). Remove air filter (6) from
door. Check air filter for damage or dirt.
(2) Clean air filter (6) by:
(a) Tapping air filter (6) on flat surface with dirty side down.
Compressed air used for cleaning or drying purposes, or for
clearing restrictions, should never exceed 30 psi (207 kPa). Wear
protective clothing (goggles/shield, gloves, etc.) and use caution to
avoid Injury to personnel.
(b) Using compressed air opposite to normal air flow, remove dirt from air filter (6).
(3) Install air filter (6) on door (7), with air flow arrow pointing up. Position mounting frame (4) over air filter and
secure with four wingnuts (5). Close air filter door.