NOSE GEAR OIL ORIFICE RETAINER RING INSTALLATION (figures 32-3 and 32-4)
1. With piston tube and fork removed from cylinder, ensure all traces of old retainer ring are removed
from metering tube.
2. A tool may be fabricated to simplify installation of new retainer ring. (Refer to chapter 95.)
3. With the use of the fabricated tool, position the new retainer ring on the end of the tool with the
locating stud.
4. Insert tool into cylinder, with the centering stud positioned into the hole in the base of the metering
ring.
5. Hold the tool tightly against the metering tube and slide sleeve of the tool towards the metering tube.
This will move the new retainer ring over the end of the metering tube and position itself into the
groove of the metering tube.
ASSEMBLY OF NOSE GEAR OLEO(figure 32-3)
1. Ensure that all parts have been cleaned and inspected.
2. Install piston tube plug as follows:
a. Lubricate tube plug and O-ring with hydraulic fluid (MIL-H-5606) and install O-ring on plug.
b. Lubricate inside wall of piston tube and insert plug into top of tube, pushing it to fork end.
c. Align bolt holes of fork, tube, and plug. Install bolt, washer, and nut.
3. Carefully install quad ring, back-up washer, and the wiper strip in bearing sleeve. Slide O-ring in place
on outside of sleeve.
4. Lubricate the bearing assembly and install it on piston tube.
5. Position snap ring on upper end of piston tube.
6. Insert piston tube with bearing assembly in cylinder tube. Secure it with retainer ring in annular slot at
bottom of tube.
7. Connect torque links on tube and fork. Secure them with a bolt, washer, and nut. Tighten nuts tight
enough to retard side play, but still allowing links to rotate freely.
8. Ensure that upper and lower bearings are installed in strut housing. Bearings are a press fit with
grooves in inner and outer races in up position.
9. Position washer and strut assembly retainer nut on top of strut housing. Insert strut assembly up
through washer until in contacts nut. Tighten nut to a snug fit.
10. To install the steering horn assembly, insert hex bolt through side of horn and top of strut assembly.
When it protrudes through other side of steering horn, install washer and nut.
11. Install steering horn attaching bolt through top of horn into strut assembly. Do not tighten bolt at this
time. If a space appears between steering horn plate and top of strut assembly, it will then be necessary
to install spacer washer(s), (AN960-416L), between horn and strut. Then tighten bolt and safety bolt to
strut assembly retainer nut with MS20995C30 wire.
12. Compress and extend strut several times to ensure that strut will operate freely. Weight of gear wheel
and fork should allow strut to extend.
13. Service oleo strut with fluid and air. (Refer to chapter 12.)
14. Check gear for alignment. (refer to Alignment of Nose Landing Gear.)
32 - 21 - 00
Page - 32-11
Reissued: August 1, 1986
2B23
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
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