Piper SARATOGA PA-32-301 Maintenance Manual page 316

PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
MAIN GEAR.
MAIN GEAR OLEO.
DISASSEMBLY OF MAIN GEAR OLEO. (Refer to Figure 32-1.)
The main gear axle and piston tube assembly may be removed from the cylinder housing with the gear
removed from or installed on the airplane. On some airplanes the metering components of the gear that are
located in the top of the housing may be removed. but only with the gear removed from the airplane. (Refer to
Removal of Gear.)
1. Place the airplane on jacks. (Refer to Chapter 7.)
2. Place a drip pan under the main gear to catch spillage.
3. The gear axle and piston tube assembly may be removed by the following procedure:
A. Remoxe the air from the oleo chamber by depressing the air valve core pin found in the
inspection hole on top of the wing. After the pressure in the oleo chamber has diminished. remove the \al\e
core pin. attach a small hose to the air valve. and drain the fluid by slowly compressing the piston tube. If it is
desirable to extract more fluid from the chamber. remove the filler plug. insert a siphon hose and drain fuid
from the upper area of the housing.
B. Disconnect the flexible brake line at the elbow on the brake assembly.
C. Disconnect the torque link assembly by removing any one of the three cotter pins. nuts. washers
and bolts. Note arrangement of the components for reinstallation. Carefully slide the piston tube from the
cylinder housing.
D. The scraper ring located inside the lower end of the cylinder housing may be removed by first
removing the retainer ring. spacer ring and then the scraper ring.
E. The O-ring seal located just before the scraper ring may be removed by using a curved wire or
spoon shaped tool and inserting it under the ring.
4. The cylinder head and the orifice assembly. may be removed by the following procedure:
A. Cut safety wire and remove the bolts that secure the cylinder head in the top of the housing.
Remove the assembl from the housing.
B. Lubricate and install an O-ring on the cylinder head assembly.
C. The orifice assembly may be removed from within the housing by rotating it counterclockwise
out of the housing ith the use of a .50 x .125 stud type spanner wrench. (Refer to Chapter 95.) Do not remo e
orifice unless it necessitates replacement.
CLEANING. INSPECTION AND REPAIR OF MAIN GEAR OLEO.
1. Clean all parts with a suitable dry type cleaning solvent.
2. Inspect the landing gear oleo components for the following:
A. Bearing surfaces of housing for excess wear. corrosion. scratches and overall damage.
B. Retaining ring for cracks. burrs. etc.
C. Cylinder tube for corrosion. scratches. nicks. excessive wear and misalignment.
D. Air valve for operation and general condition.
E. Orifice plate for hole restriction.
3. Repair of the oleo is limited to smoothing out minor scratches. nicks and dents. and replacement of
parts.
32-11-02
Page 32-04
Revised: August
11,
1983
2B23