MOONEY
M20TN - MODEL TYPE-S
SECTION VIII
HANDLING, SERVICE AND MAINTENANCE
8 -- 7
AIRPLANE FLIGHT MANUAL
ORIGINAL ISSUE -- 04-02-2008
filter assembly must be replaced after 25 cleanings or sooner if any deterioration or damage is
found during pre--flight, post flight or any other aircraft inspections.
To clean the Challenger Aviation Products filter:
1.
Remove engine cowling.
2.
Remove the air filter assembly from the aircraft air box. DO NOT REMOVE filter element from
inside its frame. Remove the old sealing gasket from filter assembly with frame.
3.
Begin re--charging air filter by “gently” tapping the filter assembly on a hard surface to remove
any loose dust that will easily fall off the filter. Visually inspect the filter for any damage,
cracks, broken wires or missing fibers. If any of those conditions are visible, the filter assem-
bly must be scrapped and replaced with a new filter assembly.
4.
Begin cleaning with Challenger Re--charger Kit P/N CP--99--5050, the only FAA approved re--
charge kit. Inside are two squeeze bottles, one for cleaning and one red in color for re--oiling
the filter element. Remove the bottle containing cleaning fluid and thoroughly saturate the
filter. Allow the filter to soak for approximately 15 minutes. DO NOT USE ANY OTHER
CLEANING FLUID.
5.
Flush the filter with low non--pressurized warm water starting from inside out. After flush, gent-
ly shake the water out of the filter and allow to air dry only. DO NOT USE ANY OTHER DRY-
ING METHOD.
6.
Remove the bottle from the Re--charger Kit P/N CP--99--5050 containing oil red in color. Begin
re--oiling the dry filter by applying a bead or line of red oil along the top only of each pleat of the
filter. The oil will soak into the length of each pleat. It may be necessary to apply oil on filter
material that has not received oil from the wicking action. The entire filter medium must be
covered with red oil. DO NOT OVER OIL. If oil drips from the filter, it has been over oiled. Allow
the filter to drain the excess oil onto a clean rag or paper towel until the red oil stops dripping.
Replace gasket with a new on the frame surface to be mounted to the air box assembly.
7.
Re--install air filter. Make sure the air filter assembly is properly seated and is mounted secure-
ly to the filter air box assembly.
8.
Re--install engine cowling.
NOTE:
Do not use gasoline, jet fuel, or caustic cleaning solutions or shop solvents. Use
only FAA approved Challenger cleaning solution in Challenger Re--charger Kit
P/N CP-99-5050.
Do not use steam cleaning equipment or any other cleaning devices. When dry-
ing the filter after cleaning, let the filter dry naturally. Pressurized equipment will
strip the cotton of critical microfilaments.
Do not use compressed air, open flames or heating devices of any kind. When
recharging the filter with oil, use only FAA approved Challenger Re--charger Oil in
Re--charger Kit P/N CP--99--5050. The oil is the same oil applied at the factory dur-
ing the manufacturing process.
Do not use transmission fluid, motor oil, or any other lightweight oil of any kind
or any products containing petroleum products.
Dry--Type Air Filters
The dry--type filter can usually be washed six to eight times before replacement is necessary.
Replace the paper induction air filter every 500 HOURS or at ONE YEAR intervals, whichever
occurs first.
