Piper CHEROKEE D - Care of Air Filter; Leveling and Rigging

SECTION V
CHEROKEE "D"
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 in-
expensive 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 "D" for purposes· of weighing or
rigging
is accomplished as follows:
1. Partially withdraw two machine screws located imme-
diately 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 adjust-
able 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: 7o dihedral, 2° washout.
2. Stabilator Travel: 18o up, 2° down, tolerance ±1o.
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