Piper PA-32R-301T SARATOGA S, Maintenance Manual

Page: 503 / 956

NOSE GEAR (Cont.)
ASSEMBLY OF NOSE GEAR OLEO
(Refer to Figure 5)
1. Ascertain that parts are cleaned and inspected.
2. To install piston tube plug, first lubricate tube plug and O-ring with hydraulic fluid (MIL-H5606A)
and install o-ring on plug. Lubricate inside wall of tube, insert plug into top of tube and push it to fork
end. Align bolt holes of fork, tube and plug, and install bolt assembly.
3. If desired, cement a cork in hole in bottom of fork body to prevent dirt from entering between fork and
tube.
4. To assemble components of orifice tube, insert orifice plate into bottom of tube,with countersunk side
of orifice hole exposed. Secure plate with snap ring, lubricate and install o-ring on upper end of tube.
5. Insert orifice tube up through bottom of cylinder. With tube exposed through top of cylinder, install
lock washer and insert roll pins through lock washer into piston. Install tube locknut finger tight at this
time.
6. Fork and tube assembly may be assembled by installing tube components on tube. In order, slide onto
tube, snap ring, washer, lower bearing with outer and inner o-rings and upper bearing. Align lock pin
holes in upper bearing with pin holes in piston tube and install pins.
7. Lubricate inner wall of cylinder with hydraulic fluid. Carefully insert piston tube assembly into bottom
of cylinder, allowing orifice tube to guide itself into fork tube, until snap ring can be in- stalled in
annular slot at bottom of cylinder. Install wiper strip, slide washer into piston and secure assembly
with snap ring.
8. At top of cylinder, tighten (torque) orifice tube locknut.
9. Ascertain that bushings are installed in upper and lower torque links and then install both links. Torque
link bolt assemblies should be lubricated and installed with flat of bolt head hex adjacent to milled
stop on wide end of link. Tighten bolts only tight enough to allow no side play in link, yet be free
enough to rotate.
10. Install cylinder into oleo housing, position spacer washer(s) over top of cylinder and secure with snap
ring. Install spacer washers as required to obtain .0 to .015 of an inch thrust of cylinder within housing.
11. At top of oleo housing, install on cylinder aligner guide bracket and steering arm. Install cap bolts,
tighten 20 to 25 inch-pounds torque and safety with MS20995C40 wire.
12. Install shimmy dampener and safety.
13. Lubricate gear assembly. (Refer to Lubrication Chart, Chapter 12.)
14. Compress and extend strut several times to ascertain that strut will operate freely. Weight of gear
wheel and fork should allow strut to extend.
15. Service oleo strut with fluid and air. (Refer to Oleo Struts, Chapter 12.)
16. Check nose gear for alignment (refer to Alignment of Nose Landing Gear) and gear operation.
PIPER AIRCRAFT
PA-32R-301/301T
MAINTENANCE MANUAL
32-20-00
Page 32-30
Reissued: July 1, 1993
3B23