Cessna 177 SERIES Service Manual page 137

2. Pry trailing leg of indicator out of groove in
link left on sprocket.
trim wheel, and using a thin screwdriver, reposition g. Place an inclinometer on trim tab and run tab
leg to groove indicated in View A-A and bend indica-
DOWN to 13°=1°.
If indicator bottoms out at or
tor so that centerline of indicator is approximately before DOWN travel is reached, bend indicator up
.73-inch above bottom of slot.
to clear bottom of slot.
o. Remove inclinometer, install all items removed
for access; remove tail stand. NOTE
WARNING
An inclinometer for measuring control sur-
face travel is available from the Cessna
Be sure trim tab moves in correct direc- Service Parts Center. Refer to Section 6.
tion when operated by the trim control
wheel. Nose down trim corresponds to h. Attach actuator to bellcrank.
tab up position. i. Run trim tab UP to 5°±1
° .
j.
Tighten center and aft stop blocks together at
9-13. RIGGING. (Beginning with Serial 17701531.) Station 238.0 (refer to figure 1-2. )
(Refer to figures 9-1 and 9-2. ) k. Run trim tab wheel in cabin to acquire DOWN
travel limit specified in step "g".
ICAUTIONi
I.
Tighten forward stop block against center stop
block.
Position a support stand under tailskid assem-
m. Run trim control wheel to upper and lower
bly or jack point (if installed) to prevent tail-
travel limits and check system for operation.
cone from dropping while working inside.
n.
If indicator cannot be adjusted, it may be neces-
sary to proceed as follows:
a.
Remove rear baggage compartment wall and
1. Remove pedestal cover as outlined in Section
access plates as necessary. 10.
b.
Loosen travel stop blocks on trim tab cables. 2.
Pry trailing leg of indicator out of groove in
c.
Set and secure stabilator in neutral position.
trim wheel, and using a thin screwdriver, reposition
DO NOT USE CONTROL LOCK ON CONTROL COL-
leg to groove indicated in View A-A and bend indica-
UMN.
tor so that centerline of indicator is approximately
.64-inch above bottom of slot.
NOTE
NOTE
Stabilator neutral position is determined by
aligning rivet in inboard leading edge of
Assure that trim tab is 5°±10 TAB DOWN
stabilator with adjacent No. 40 (. 098) hole
with indicator at top of "TAKE OFF" mark
at station 277.0 (refer to figure 1-2) on and that trim tab is 8±°1
°
TAB DOWN with
both sides of tailcone assembly.
indicator at bottom of "TAKE OFF" mark.
d.
Set and secure trim tab in neutral (streamlined) o.
Remove inclinometer, install all items removed
position.
for access; remove tail stand.
e.
Position indicator in slot adjacent to cabin trim WARNI
wheel, so that centerline of indicator is located WAR
N1
approximately . 64-inch above bottom of slot to
assure that wheel has approximately equal amounts
Be sure trim tab moves in correct direc-
of travel in both directions of rotation (center groove
tion when operated by the trim control
of trim wheel).
wheel.
Nose down trim corresponds to
f. Disconnect actuator from bellcrank and run
tab up position.
chain off actuator on right-hand side, except for one
SHOP NOTES:
9-8 Change 5