Replacing Cab Air Filters RXA0099137-UN-19SEP08
Let Cover Swing By Turning Knob  RXA0099139-UN-19SEP08
Remove Filter  RXA0099699-UN-04NOV08
A - Cover B - Knob Support cover then turn knob allowing cover (A) to swing down. Remove old filter (B). Inspect condition of filter. Replace filter annually or sooner when plugged or damaged. NOTE: Using a clean cloth, wipe down inside and outside filter cover before replacing old filter or installing new filter. If required, install new filter. NOTE: Filter cover has three positions; open (A), latched (B) and locked (C).  RXA0099848-UN-26NOV08
Air Filter Cover
Close cover and turn knob 180° so that latch is locked.
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