RANS S-20 RAVEN
TEXT MANUAL
9/01/2013
01B-02
NOSE GEAR INSTALLATION
NOTE: Turn fuselage upside down to ease nose gear assembly.
9.
Select all the parts for the nose gear except for the steering rods and
linkages. These will be assembled during the rudder pedal installation.
10.
Apply a thin film of grease to the nose gear strut.
11.
Pack and grease the thrust bearing and washer assembly and install on
the nose gear strut. Slip the nose gear strut into the lower swivel bushing
on the fuselage and install the stop ring and steering horn. Push the strut
until it inserts into the top swivel bushing and bottoms out on the bearing
assembly. Do not bolt the steer horn in place at this time.
NOTE: Some
filing or reaming of the fuselage bushings may be required to allow
insertion and free rotation of the nose gear.
IMPORTANT: However, it is
important to NOT ream any more than necessary.
Nose gear shimmy may
result from too loose fit.
12.
Locate the center of each axle bushing on the nose gear fork. Drill a #40
hole through the bushings on centerline.
See
FIGURE 01B-12
.
13.
Mount the tire, with tube, onto the nose wheel. Install the wheel/tire
assembly into the nose fork by first checking axle insertion into the hub
bearings. If the axle will not slide into the wheel, spin sand it on a belt or
disc sander. Install the axle with an aluminum bushings on each side.
Note that the bushings will need to be cut to fit. Using a #40 drill bit,
transfer drill through the pre-drilled holes in the axle bushings on the fork
through the axle and install the cotter pins to retain the axle.
14.
Turn the fuselage right side up. Push the strut so that the thrust bearing
and washers are tight against the lower swivel bushing. Push down the
stop ring and steer horn. View the top of the fork and steer horn from
above. Align the tabs on the horn parallel with the fork and drill through
from each side of the steer horn with a #11 drill bit and bolt in place.
15.
While rotating the nose column, lube the swivel bushings with a quality
grease. This will be required at least every 12 months under normal
operations. Disassemble, clean and re-lube the spring every 12 months
or as required. To service, weight tail and tie with the nosewheel off the
ground. Remove, clean and re-assemble. Use weight of aircraft to
depress spring for bolt insertion. Inspect bolt every pre-flight for wear.
Replace if the bolt shows signs of "grooving".