Instruction manual

15
D. Install the #115-12 Vertical Front Channel using one #0061 M3 x 8 Socket Head Bolt, one #0063 M3 x 10
Socket Head Bolt and one #0019 M3 Locknut. The open side of the channel faces forward. Temporarily
install the #0063 M3x10 Socket Head Bolt into the fifth hole from the bottom of the frame in the location for
the channel as shown. Temporarily lightly tighten the bolt so the channel can be aligned at the bottom. Align
all holes and install one #0061 Socket Head Bolt with one #0019 M3 Locknut into the hole, fourth hole up
from the bottom. Tighten the bolt and nut securely.
E. Install the #120-12 Upper Main Shaft Bearing Block (hump side upward) using two #0063 M3x10 Socket
Head Bolts using Blue Loctite. Do not fully tighten.
F. Install the #120-8 Main Shaft/Tail Rotor Drive Block Assembly as shown using one #0060-1 M3 x 6 Socket
Head Bolt, one #0061 M3 x 8 Socket Head Bolt, and one #0064 M3 x 8 Button Head Socket Head Bolt. Use
Blue Loctite. Do not fully tighten.
G. Install the #115-18 Lower Main Shaft Bearing Block as shown (full diameter of the bearing facing down)
using one #0061 M3 x 8 Socket Head Bolt and one #0063 M3 x 10 Socket Head Bolt. The #0063 Socket
Head Bolt will be removed later. Add Blue Loctite to the #0061 Socket Head Bolt only.
H. Remove the #120-10 Main Shaft from bag 3D. Slide it down through all three bearing blocks. Securely
tighten all the bolts except the #0063 Socket Head Bolt, installed in the #115-18 Lower Main Shaft Bearing
Block. Remove the Main Shaft.
I. As per the drawing, install three #115-20 Frame Spacers in the inner front of the main frame using three
#0061 M3 x 8 Socket Head Bolts. Tighten securely using Blue Loctite.