Landing Gear - Piper CHEROKEE CRUISER PA-28-140 Information Manual

CHEROKEE CRUISER
The propeller used on the PA-28-140 is a Sensenich M74DM fixed-pitch aluminum alloy
unit. Its diameter is 74 inches with a standard pitch of 58 inches. All performance figures are
based on the standard 58 inch pitch propeller.
Cowling on the Cherokee is designed to cool the engine in all normal flight conditions,
including protracted climb, without the use of cowl flaps or cooling flanges.
The throttle quadrant is in the lower center of the instrument panel and contains the
throttle and mixture control. A friction lock on the right side of the quadrant prevents creeping
of the controls. To the right of the quadrant is the carburetor heat control that provides
maximum carburetor heat when fully ON. Air passes through a highly efficient dry type filter
when the carburetor heat is OFF.
The Flite Liner incorporates a throttle detent adjusted to the 60% power location for the
throttle control. When the throttle is set in this detent, the tachometer needle will match the
white radial decal indicating 2265 RPM on the glass of the tachometer at 3500 feet altitude.
The arcs of this decal represent 60% power at sea level (2180 RPM) and 7000 feet (2345 RPM).
Thus an economical 60% power setting can be easily obtained up to 7000 feet altitude.
LANDING GEAR
The three landing gears use Cleveland 6.00 x 6 wheels, the main wheels are being provided
with brake drums and Cleveland single disc hydraulic brake assemblies. The nose wheel and the
main gear all use 6.00 x 6 four ply tires with tubes.
The nose gear is steerable through a 60° arc by use of the rudder pedals and brake. A
spring device is incorporated in the rudder pedal torque tube assembly to aid in rudder centering
and to provide rudder trim. The nose gear steering mechanism also incorporates a bungee device
to provide lighter, smoother ground steering and to dampen bumps and shocks during taxiing.
The nose gear also includes a shimmy dampener.
The oleo struts are of the air-oil type with a normal extension of 3.25 inches for the nose
gear and 4.50 inches for the main gear under normal static (empty weight of airplane plus full
fuel and oil) load.
The brakes are actuated by a hand lever and a master cylinder which is located below and
near the center of the instrument panel. The toe brakes and the hand lever have their own brake
cylinders, but they share a common reservoir. The parking brake is incorporated in the lever
brake and is operated by pulling back on the lever and depressing the knob attached to the top
of the handle. To release the parking brake, pull back on the brake lever to disengage the catch
mechanism; then allow the handle to swing forward.
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AIRPLANE AND SYSTEMS
REVISED: JUNE 13, 1974