SERVICE MANUAL & ICA
8750 AMPHIBIAN/SEAPLANE FLOATS ON CESSNA 208/208B
P/N 1005723 Doc. No. W8750-24-01
Page 56 of 104
Revision C
4.2 MAIN GEAR ASSEMBLY SETUP
AND ADJUSTMENT (CONT.)
17.
Reattach rod linkages to actuator arms.
Loosen the rod linkage jamb nuts and
lengthen the rods slightly (Item 3). Make
equal adjustments to each rod.
18.
Rotate actuator arms until the internal piston
is against the Down Adjustment Screw.
19.
Shorten the Rod Linkage until the Top Arm
Contact Face (Item 15) touches the contact
face of the Top Mount (Item 7). Make equal
adjustments to each rod. Actuator needs to
be rotated fully against the Down
Adjustment Screw.
20.
Visually inspect the Rod Linkage position
(Item 3) versus the actuator shaft (Item 4).
When rigged correctly, the bottom edge of
the rod linkage should pass through the shaft
as shown in Figure 4-4A.
21.
Ensure gear is in down and locked position.
22.
Using a small digital protractor, the over-
center angle will be verified. Lay the
protractor across the bottom of the lower
two screw holes in the actuator arm. Note:
Older float models may not have flat spot
shown; use the same location as shown.
Zero the protractor. See Figure 4-4B. Then
place the protractor on the top or bottom of
the rod linkage. The measured angle should
be 4° ± 1°. Repeat for the other actuator
arm and rod linkage by zeroing the
protractor on the other actuator arm and
measuring the rod linkage angle.
23.
If angle is lower than required, the down
Adjustment Screw (Item 8) should be turned
out to allow more rotation. If the angle is
greater than required, the actuator is over-
rotating and the adjustment screw should be
turned in. One turn of the adjustment screw
changes the angle by approximately 2°.
24.
If adjustments have been made to the Down
Adjustment Screw, the Rod Linkage (Item
3) may need to be shortened or lengthened
so that the Top Arm Contact Face (Item 15)
still makes contact with the Top Mount.
25.
Repeat steps 22 through 24 until angles
measure within tolerance.
26.
With setscrew positioned against the piston
face, tighten the adjustment screw jam nut
(Item 9).
