Cessna 177 SERIES Service Manual page 136

9-12. RIGGING. (Thru Serial 17701530.)
(Refer to
CAUTION figures 9-1 and 9-2. )
Position a support stand under tailskid
CAUTION
assembly to prevent tailcone from drop-
ping while working inside.
Position a support stand under tailskid assem-
bly or jack point (if installed) to prevent tail-
3. Remove pedestal cover as outlined in para-
cone from dropping while working inside.
graph 10-20.
4. Disengage roller chain (6) from trim control
a. Remove rear baggage compartment wall and
wheel sprocket (2).
Refer to paragraph 9-9.
access plates as necessary.
5.
Remove cable guards and pulleys as neces-
b. Loosen travel stop blocks on trim tab cables.
sary to work cable free of aircraft.
c. Set and secure stabilator in neutral position.
DO NOT USE CONTROL LOCK ON CONTROL COL-
NOTE
UMN.
To ease routing of cable, a length of wire
NOTE
may be attached to the end of cable before
being withdrawn from the aircraft. Leave Stabilator neutral position is determined by
wire in place, routed through structure;
aligning rivet in inboard leading edge of
then attach the cable being installed and
stabilator with adjacent No. 40 (.098) hole
pull cable into position. at station 277.0 (refer to figure 1-2) on
both sides of tailcone assembly.
6. After cable is routed in position, install pul-
leys and cable guards.
Ensure cable is positioned in
d. Set and secure trim tab in neutral (streamlined)
pulley groove before installing guards.
Ensure roll- position.
er chain (6) is positioned correctly over sprocket (2).
e. Position indicator in slot adjacent to cabin trim
7. Re-rig system in accordance with paragraph
wheel, so that centerline of indicator is located
9-12, safety turnbuckles and reinstall all items re-
approximately .73-inch above bottom of slot to
moved for access.
assure that wheel has approximately equal amounts
b. AFT CABLE. (Refer to figure 9-1.)
of travel in both direction of rotation (center groove
1. Remove rear baggage compartment wall.
of trim wheel).
2. Remove safety wire, relieve cable tension
f. Disconnect actuator from bellcrank and run -
and disconnect aft cable ends from turnbuckles (10).
chain off actuator on right-hand side, except for one
link left on sprocket.
CAUTION g. Place an inclinometer on trim tab and run tab
CAUTION---
DOWN to 7°-1
°
(Serials 17700001 thru 17701164),
Position a support stand under tailskid assem-
12°, +0
°
-2° (Serials 17701165 thru 17701370) or
bly to prevent tailcone from dropping while
13°±1+ (Serials 17701371 thru 17701530).
If indica-
working inside.
tor bottoms out at or before DOWN travel is reached,
bend indicator up to clear bottom of slot.
3.
Remove travel stop blocks (9).
4.
Disengage roller chain (6) from actuator
NOTE
sprocket (2). Refer to paragraph 9-7.
5. Remove cable guards and pulleys as neces-
An inclinometer for measuring control sur-
sary to work cable free of aircraft.
face travel is available from the Cessna
Service Parts Center.
Refer to Section 6.
NOTE
h. Attach actuator to bellcrank.
To ease routing of cable, a length of wire
i. Run trim tab UP to 2°±1
°
(Serials 17700001 thru
may be attached to the end of cable before
17701164), 6
°
, +2
°
-0
°
(Serials 17701165 thru 177-
being withdrawn from the aircraft.
Leave 01370) or 5°±1
°
(Serials 17701371 thru 17701530).
wire in place. routed through structure,
j. Tighten center and aft stop blocks together at
then attach the cable being installed and
Station 238.0 (refer to figure 1-2. )
pull cable into position.
k. Run trim tab wheel in cabin to acquire DOWN
travel limit specified in step "g".
6. After cable is routed in position, install pul-
1. Tighten forward stop block against center stop
leys and cable guards.
Ensure cable is positioned in
block.
pulley groove before installing guards.
Ensure roll-
m. Run trim control wheel to upper and lower
er chain (6) is positioned correctly over actuator
travel limits and check system for operation.
sprocket (2).
n. If indicator cannot be adjusted, it may be neces-
7. Re-rig system in accordance with paragraph
sary to proceed as follows:
9-12. safety turnbuckles (10) and reinstall all items
1. Remove pedestal cover as outlined in Section
removed for access.
10.
Change 5 9-7