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CARE OF AIR FILTER
The carburetor air filter must be cleaned at least once every fifty hours. Under
extremely adverse conditions of operation it may be necessary to clean the filter
daily. Extra filters are inexpensive and a spare should be kept on hand and used
as a rapid replacement.
The filter manufacturer recommends that the filter be tapped gently to remove
dirt particles. Do not blow out with compressed air.
LEVELING AND RIGGING
Leveling the Cherokee for purposes of weighing or rigging is accomplished as
follows:
1. Partially withdraw two machine screws located immediately below the
left front side window. These screws are leveling points and the airplane
is longitudinally level when a level placed on the heads of these screws
indicates level.
2. To put the airplane in a longitudinally level position on scales, first block
the main gear oleos in the fully extended position, then deflate the nose
wheel tire until the proper attitude is obtained. For rigging only, the
airplane may be placed on jacks for leveling.
3. To level the airplane laterally, place a level across the baggage
compartment floor along the rear bulkhead.
Rigging: Although the fixed flight surfaces on the Cherokee cannot be adjusted
for rigging purposes, it may be necessary upon occasion to check the position of
these surfaces. The movable surfaces all have adjustable stops, as well as
adjustable turnbuckles on the cables or push-pull tubes, so that their range of
travel can be altered. The positions and angular travels of the various surfaces
are as follows:
1. Wings: 7° dihedral, 2° washout.
2. Stabilator Travel: 18° up, 2° down, tolerance ±1°.
3. Fin should be vertical, and in line with center of fuselage.
4. Ailerons Travel: 30° up, 15° down, tolerance ±2°.
5. Flaps travel: 10°, 25°, 40°, and tolerance ±2 °.
6. Rudder Travel: 27° right and left, tolerance ±2°.
7. Stabilator Tab Travel: 3° up, 12° down, tolerance ±1°.
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