Great Planes PT-60 Kit - GPMA0119 - Manual (Page 33)

(Refer to this photo when performing the following
steps.)
D 4 Slide the 3/16" steering arm over the top end of the
nose gear wire.
D 5 Insert the nose gear wire into the bottom hole of the
engine mount, and out through the top hole
D 6 Slide a 3/16" wheel collar onto the top end of
the wire.
D 7 Check that the nose gear spring coil clears the
bottom of the fuse, then tighten the wheel collar and
steering arm on both sides of the engine mount as shown
in the photo This will lock the nose gear in position NOTE:
After the radio has been installed and the nose gear
aligned, you will need to file or grind a flat spot (see
page 40 for Expert Tip on Flat Spots) on the wire to prevent
the steering arm from moving from its "set" position.
D 8 Install the 2 3/4" nose wheel with two 3/16" wheel
collars (not supplied).
D 9 Enlarge the outer hole in the steering arm by drilling
with a 5/64" bit.
D 10 Make a 90 degree bend in the unthreaded nose
wheel steering pushrod wire 3/8" from one end Insert the
straight end of the pushrod into the outer tube, then work
the bent section into the enlarged hole in the steering arm.
D 11 Position the nose wheel straight ahead and the axle
perpendicular to the fuse centerline Loosen the steering
arm Then, while holding the nose wheel straight, rotate the
steering arm slightly ahead of the nose gear axle
centerline Refer to the top view of the fuse plan for the
required angle. This position will enable you to turn left, as
well as right Test the linkage for free movement
D 12 Install the engine and muffler, prop, spinner, and
tank Don't worry about putting the prop and spinner on
permanently at this stage Install the tank hatch cover with
three #2 x 3/8" screws
D 1 Cut four servo tray doublers from scrap ply left over
from the die-cut sheets Make two 3/8" x 2-1/2" and two
3/8" x 1" Glue these to the servo tray with medium CA as
shown in the photo.
MOUNTING SERVOS
The proper way to mount a servo is as follows'
A. Insert a rubber grommet into each of the four
servo notches
B Insert a metal eyelet from the bottom of the rubber
grommet This way the wide portion of the eyelet will
be in contact with the servo tray when mounted
C. Test fit the servo in the tray, and enlarge the openings
so the servo will not touch the tray The rubber
grommets will isolate the servo from the hard
vibration of the airplane's structure
D. Position the servo, then mark the location of the
mounting holes Drill pilot holes with a 1/16" bit at
each mark
E. Use the servo screws supplied with your radio to
mount the servo(s) in the servo tray Tighten the
screws until they are secure against the top of the
metal eyelets, but without crushing the eyelets
33