Cessna 177 SERIES Service Manual

9-3. TROUBLE
SHOOTING
(Cont).
TROUBLE PROBABLE CAUSE REMEDY
TRIM CONTROL WHEEL
Cable
tension too high.
Check
and adjust tension.
MOVES
WITH EXCESSIVE
-RESISTANCE.
Pulleys
binding or rubbing.
Check visually.
Repair or
replace
pulleys as
necessary.
Cables
not in place on pulleys.
Check visually. Install
cables
correctly on pulleys.
Trim
tab hinge binding.
Disconnect
trim tab
push-pull
tube and check for binding.
Lubricate
or replace
hinge as
necessary.
Defective
trim tab actuator.
Disconnect actuator and turn
sprocket
by hand.
Replace
actuator if defective.
Rusty chain.
Check visually. Replace rusty
chain.
Damaged
sprocket.
Check visually.
Replace damaged
sprocket.
Bent sprocket shaft.
Check visually.
Replace bent shaft.
Actuator pivot
binding.
Disconnect
bellcrank
at lower end
of actuator and check actuator for
binding. Replace defective parts.
Bellcrank binding.
Disconnect
actuator and push-pull
tube from bellcrank and check
bellcrank for binding. Replace
defective parts.
9-4. TRIM TAB. (Refer
to figure 9-1.) b. Remove
safety wire and relieve cable tension
at turnbuckles (10).
9-5.
REMOVAL AND
INSTALLATION.
a. Remove push-pull tube
attach point cover and
(CAUTION
disconnect push-pull tube (21) at tab.
Position
a support stand
under tailskid
NOTE
assembly
to prevent
tailcone
from
drop-
ping while working inside.
If trim system is not moved and actuator
screw is not
turned,
re-rigging of
system
c. Remove
screws
securing actuator
bracket
(20)
should not
be necessary
after
reinstalla-
to support
bracket.
tion of
tab.
d.
Remove chain
guard (18)
and disengage
chain
(6) from actuator sprocket (2).
b. Remove
hinge pins from
hinges and carefully
e. Disconnect
actuator (21) from
bellcrank
(23) and
remove tab.
remove
actuator
from aircraft.
c. Reverse
preceding
steps for reinstallation.
Rig
f. Reverse
the preceding
steps for reinstallation.
system
if necessary in accordance
with paragraph
Rig system
in accordance with paragraph
9-12,
9-12.
safety turnbuckles
and reinstall
all items
removed
for access. For lubrication requirements refer to
9-6. TRIM TAB ACTUATOR.
Section 2.
9-7. REMOVAL
AND INSTALLATION. (Refer to
9-7A. DISASSEMBLY. (Refer to figure 9-3.)
figure
9-1. )
a.
Remove actuator
in accordance
with paragraph
a. Remove
rear baggage
compartment
wall and
9-7.
tailcone access plates.
9-2 Change 3

Cessna 177 SERIES Specifications

General

Manufacturer	Cessna
Engine Type	Piston
Wingspan	35 ft 6 in (10.82 m)
Seating Capacity	4
Number Built	4, 295
Engine	Lycoming O-360
Horsepower	180 hp
Maximum Takeoff Weight	2, 500 lb (1, 134 kg)