Cessna 150 Series Service Manual page 63

f. Use alternate method to replace nutplates: 4-16. HORIZONTAL STABILIZER (See figure 4-4.)
1. Remove rudder, elevators, and vertical fin per
sections 10, 8, and paragraph 4-14.
4-17. DESCRIPTION. The horizontal stabilizer is
2. Remove bolts securing stabilizer rear spar to
primarily of all-metal construction, consisting of ribs
fuselage tailcone.
and spars covered with skin. Stabilizer tips are ABS.
3. Remove bolts securing forward stabilizer
A formed metal leading edge is riveted to the assembly
attach points. Remove stabilizer. to complete the structure. The elevator trim tab
4. Remove damaged nutplates by inserting a actuator is contained within the horizontal stabilizer.
longer bolt than normally used and lightly tapping
The underside of the stabilizer contains a covered
the head of the bolt with a hammer to extrude
opening which provides access to the actuator. Hinges
tubular rivets through nutplate ears.
are located on the rear spar assembly to support the
elevators.
NOTE
4-18. REMOVAL AND INSTALLATION.
Attach bracket is not removed from stabilizer
a. Remove elevators and rudder in accordance with
spar with this method.
procedures outlined in Sections 8 and 10.
b. Remove vertical fin in accordance with procedures
5. Reinstall stabilizer using bolts at forward and
outlined in paragraph 4-14.
rear spar attach points. c. Disconnect elevator trim control cables at clevis
and turnbuckle inside tailcone, remove pulleys which
NOTE
route the aft cables into horizontal stabilizer, and pull
cables out of tailcone.
Torque bolts to 70 to 100 pound-inches.
d. Remove bolts securing horizontal stabilizer to
fuselage.
6. Using replacement nuts rather than nutplates, e. Remove horizontal stabilizer.
reinstall vertical fin per paragraph 4-14.
f. Install horizontal stabilizer by reversing preceding
7. Reinstall rudder and elevator per sections 10
steps. Rig control systems as necessary. Check
and 8.
operation of tail navigation light and flashing beacon.
4-15. REPAIR. Fin repair should be accomplished in
4-19. REPAIR. Horizontal stabilizer repair should
accordance with applicable instructions outlined in
be accomplished in accordance with applicable
Section 18.
instructions outlined in Section 18.
4-8 Change 1