Rockwell Commander 112 - Engine Induction Air Filter Cleaning; Fuel System

SECTION n
SERVICING
MAINTENANCE MANUAL
ROCKWELL
COMMANDER
112/B/TC /TCA
AND INSPECTION
f. Install square rubber gasket in groove in
mounting plate.
g. Install complete assembly to adapter and torque
stud to 20 to 25 foot-pounds.
h. Safety wire stud to side of housing.
ENGINE INDUCTION AIR FILTER CLEANING
An induction air filter is installed in the induction air
filter housing of the engine (see Figure 2- 6). This
filter prevents rapid wear of engine moving parts
caused by entry of fine grit and dust into the internal
parts of the engine. Careful attention to the condition
and
proper cleaning of the engine air filter is impor-
tant to long engine life. The filter should be removed
and cleaned or changed at every 50 hour interval of
flight
time, and more often if operating in dusty areas.
To clean the filter proceed as follows:
a. Remove upper section of engine cowling.
b. Remove air filter from air filter box assembly ,
by removing attaching clamp and dust and removing
screws attaching box assembly to cowling.
c. Thoroughly wash filter in PS-661 cleaning sol-
vent or equivalent.
d. Allow filter to drain dry.
e. Dip filter in clean engine oil, stand on end and
allow to drain at least 16 hours.
f. Wipe off excess oil and wipe down frame.
IIOT.
Extra air filters should be retained so
that a clean filter will be readily available.
g. Install clean air filter in air filter box assembly
and reinstall air filter box assembly.
h. Replace upper cowling.
FUEL SYSTEM
RE FUELING. Refuel aircraft with fueling facilities
that contain filters for removing the moisture content
from the fuel. If fueling faCilities with filters are not
available, filter fuel through a good grade chamois.
Fuel tanks should be serviced after the last flight of
the day to allow
maximum time for entrained moisture
to reach the sumps prior to the next flight. Use only
100/130 octane, aviation grade gasoline. See Figure
2-7 for fuel tank capacity.
2-10
I WARNING I
Ground aircraft and ground fuel servicing
equipment to aircraft. Smoking in or around
the aircraft during refueling operations is
prohibited. Fire protection equipment must
be immediately available.
MODEL 112 THRU 125)
FUEL
100/130 OCTANE MIN
USEABLE GAL.
~
__ -30
- 25
- 20
-15
MODEL 112 126 THRU 155)
FUEL
100/130 OCTANE MIN
USEABLE GAL.
If
- 32
- 27
-22
-17
MODEL 112 156 AND
SUBSEQUENT) MODEL
112B/TC/TCA
FUEL
100/130 OCTANE
MIN
Figure 2-7. Fuel Tank Capacity
a. Master battery switch - OFF.
X2219A
b. Remove fuel filler cap, located on top outboard
surface of right wing, and fill tank until fuel level
rises to filler neck. Allow fuel to settle for five min-
utes, then add fuel to ensure complete filling.
Do not drag refueling hoses over lead-
ing edge or other wing surfaces. This
will damage painted surfaces.
IIOT.
It is recommended that a thin vinyl
mat be locally fabricated to prevent
damage to the paint surfaces during
refueling. An approximate overall
size of 12 x 22" with a 3-5/8" diam-
eter hole near one of the 12 inch
edges, to fit over the filler opening,
will provide protection from nozzle
scratches.
Copyright Commander Owners Group 2013 All Rights Reserved
**unofficial copy**