Piper PA-34-200T Seneca II, Service Manual

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PIPER SENECA II SERVICE MANUAL
7-8. ASSEMBLY. (Refer to Figure 7-1.)
After cleaning and inspecting components as explained in paragraph 7-6 above, reassemble the nose gear
oleo as follows:
a. Insert piston strut (30) into its recess in fork (39) and secure in position with hardware (38).
b. Install snap ring (37) and washer (36) on piston strut. Install O-rings (31 and 34) and a new wiper
ring (35) on bearing (32).
d. Lubricate piston strut using hydraulic fluid (MIL-PRF-5606H) and slide bearing onto piston strut.
e. Slide spacer (29) onto strut and align holes. Insert two retaining pins (28).
f. Lubricate inner walls of oleo cylinder with hydraulic fluid. Carefully insert piston strut into cylinder
far enough to permit positioning of washer (36) and snap ring (37). (Refer to paragraph b above.)
g. Install torque links (33) using appropriate hardware.
h. Remove upper and lower shoulder bushings (17 and 22) from trunnion assembly (23).
NOTE: Avoid damaging the upper and lower flanges of the bushing.
i. Slide the lower shoulder bushing down the oleo cylinder until it bottoms above mounting lug
securing the upper torque link.
j. Insert the oleo cylinder into the trunnion assembly (23). The base of the trunnion must seat firmly
on the lower shoulder bushing.
k. Carefully insert the upper shoulder bushing (17) between the oleo cylinder and the trunnion.
1. Place O-ring (25) into recess in top of oleo cylinder. Position bearing (21) on oleo cylinder. The tab
of the bearing should be facing forward. Insert the bottom of the tiller (20) into the opening in the
top of the oleo cylinder and secure in position with four bolts and washer (1) and safety.
m. Install nose gear centering spring assembly (11). (See latest revision of Piper Service Bulletin 893.)
NOTE: Ascertain that bolt is installed with the head down and washers are arranged as shown in
Figure 7-1.
n. Lubricate gear assembly. (Refer to Lubrication Chart, Section II.)
o. Compress and extend the strut several times to determine the strut will operate freely. The weight of
the tire and fork should allow the strut to extend.
p. Install the air valve body (15), core (14) and cap (13) after servicing the oleo cylinder with oil and
air. (Refer to Oleo Struts, Section II.)
q. Check main gear for alignment (refer to paragraph 7-25) and operation.
7-8a. REPAIR.
Repair of the oleo is limited to smoothing out minor scratches, nicks and dents, and replacement of
parts.
01/01/09 VII - LANDING GEAR AND BRAKE SYSTEM
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