Cessna 150M - Elevators; Bellcranks

8-3. TROUBLE SHOOTING (Cont).
TROUBLE
PROBABLE CAUSE
REMEDY
ELEVATORS FAIL TO ATTAIN Stops incorrectly set.
Rig system in accordance with
PRESCRIBED TRAVEL.
paragraph 8-14.
Cables tightened unevenly.
Rig system in accordance with
paragraph 8-14.
Interference at firewall or
Rig system in accordance with
instrument panel.
8-4. ELEVATORS. (Refer to figure 8-2.)
8-5. REMOVAL AND INSTALLATION.
NOTE
This procedure is written primarily for
the right elevator since the trim tab is
attached to this elevator.
a. Disconnect trim tab push-pull tube (2) at tab
actuator.
b. Remove bolts (8) securing elevators to bellcrank
(7).
NOTE
If trim system is not moved and actuator
screw is not turned, rigging of trim sys-
tem should not be necessary after instal-
lation of elevator.
c. Remove bolts (10) from elevator hinges.
d. USing care, remove elevator.
e. To remove left elevator use same procedure,
omitting step "a".
f. Reverse preceding steps for installation. Rig
system in accordance with applicable paragraph in
this section if necessary.
8-6. REPAIR. Repair may be accomplished as out-
lined in Section 18. Hinge bushings may be replaced
as necessary. If repair has affected static balance,
check and rebalance as required.
8-7. BELLCRANKS.
8-8. FORWARD. (Refer to figure 8-1.)
8-9. REMOVAL AND INSTALLATION.
a. Remove seats, upholstery and access plates as
necessary.
b. Relieve cable tension at turnbuckles (10) and dis-
connect cables from bellcrank (14).
c.
Disconnect push-pull tube (15) from bellcrank.
d. Remove pivot bolt (13) and remove bellcrank.
e. Reverse preceding steps for installation. Rig
system in accordance with applicable paragraph in
8-2
paragraph 8-14.
this section, safety turnbuckles and reinstall all
items removed in step "a".
8-10. REAR. (Refer to figure 8-2.)
8-11. REMOVAL AND INSTALLATION.
a. Remove rudder. (Refer to Section 10.)
b. Remove seats, upholstery and access plates as
necessary for access to turnbuckles (index 10, fig-
ure 8-1).
c. Relieve cable tension at turnbuckles and dis-
connect cables from rear bellcrank (7).
d.
Remove bolts (8) securing elevators to bellcrank.
e. Remove bellcrank pivot bolt and slide bellcrank
from between tube assemblies (6).
NOTE
It may be necessary to remove one of the
attaching bolts (10) for clearance when
removing the bellcrank pivot bolt.
f. Reverse preceding steps for installation. Rig
system in accordance with applicable paragraph in
this section, safety turnbuckles and reinstall all
items removed in step "b".
8-12. CABLES AND PULLEYS. (Refer to figure
8-1. )
8-13. REMOVAL AND INSTALLATION.
a. Remove seats, upholstery and access plates as
necessary.
b. Relieve cable tension at turnbuckles (10).
c. Disconnect cables at forward bellcrank links
(12).
d.
Disconnect cables at rear bellcrank (9).
e. Remove fair leads, cable guards and pulleys as
necessary to work cables free of aircraft.
NOTE
To ease routing of cables, a length of wire
may be attached to end of cable before being
withdrawn from aircraft. Leave wire in
place, routed through structure, attach cable
being installed and pull cable into position.