Piper cherokee WARRIOR Pilots Operating Manual page 95

CIIEROKEE WARRIOR
In jacking the airplane for landing gear or other service, two hydraulic jacks and a tail stand
should be used. At least 250 pounds of ballast should be placed on the tailstand before jacking
the airplane. The hydraulic jacks are placed under the jack points on the underside of the wings,
and the airplane is jacked up until the tail stand can be attached to the tail skid. After attaching
the tail stand and adding the ballast, the jacking can be continued until the airplane is at the
desired heieht.
The steering arrns from the rudder pedals to the nose gear are adjusted at the rudder pedals
or at the nose wheel by turning in or out the tlrreaded rod end bearings. Adjustments are
normally made at the forward end of the rods and should be done in such a way that the nose
wheel is in line with the fore and aft axis of the airplane when the rudder pedals and rudder are
centered. Alignment of the nose wheel can be checked by pushing the airplane back and forth
with the rudder centered to determine that the plane follows a perfectly straight line.
The turning arc of the nose wheel is 30 degrees either side of center and is factory adjusted
at stops on the bottom of the forging. The turning radius of the nose wheel is l3 feet.
The rudder bar stops should be carefully adjusted so that the rudder bar reaches its full
traveljust after the rudder hits its stops. This guarantees that the rudder will be allowed to move
through its full travel.
PROPELLER SERVICE
The spinner and backing plate should be cleaned and inspected for cracks frequently.
Before each flight the propeller should be inspected for nicks, scratches, or corrosion. If found,
they should be repaired as soon as pssible by a rated mechanic, since a nick or scratch causes an
area of increased stress which can lead to serious cracks or the loss of a propeller tip. The back
face of the blades should be painted when necessary with flat black paint to retard glare. To
prevent corrosion, all zurfaces should be cleaned and waxed periodically.
OIL REQUIREMENTS
The oil capacity of the Lycoming O-320-E3D series engines is 8 quarts and the minimum
safe quantity is 2 quarts. It is recommended that the oilbe changed every 50 hours and sooner
under unfavorable operating conditions. The following grades are recomrnended for the
specified tem peratures :
Temperafures
Above 60" F
Between 30' and 90" F
Between 0" and 70" F
B e l o w l 0 ' F
Single Viscosity
Grade
SAE 50
SAE 40
SAE 30
SAE 20
Multi-Viscosity
Grade
SAE 40 or SAE 50
SAE 40
SAE 40 or 20W-30
sAE 20W-30
HANDLING AT{D SERVICING
ISSUED: JULY 17,1973
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