Eagle ICA-D212-725, Instructions Manual

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ICA-D212-725 (67)
Page 46 of 55
CHAPTER 67 – FLIGHT CONTROLS (67-00-00)

COPYRIGHT

2007 BY DART AEROSPACE LTD.

THIS DOCUMENT IS PRIVATE AND CONFIDENTIAL AND IS SUPPLIED ON THE EXPRESS CONDITION THAT IT IS NOT TO BE USED FOR ANY PURPOSE OR COPIED OR COMMUNICATED TO
ANY OTHER PERSON WITHOUT WRITTEN PERMISSION FROM DART AEROSPACE LTD.
Revision:
6
Date: 13.08.26
and secure with cotter pins.
67.4.4.2.4
Apply a coat of primer (C-201) to
mounting surface of pedal support, position on
bulkhead with the word TOP up. Install four bolts
and washers. Torque 30 to 40 in.lbs. (3.39 to 4.52
Nm).
67.4.4.2.5
Position control tubes (33) on
pedals. Install bolts, washers and nuts. Torque
nuts 30 to 40 in.lbs. (3.39 to 4.52 Nm) and secure
with cotter pins.
67.4.4.2.6 Install
flight control access doors.
67.4.4.2.7
Install pilot seat.
67.4.4.2.8
Perform rigging and operational
check (paragraph 67.1.4).
67.4.5 Force Trim
A magnetic brake and force gradient installation is
used for control centering and force trim. An arm
on a rotary shaft can be braked and held at any
point in arc of travel by use of a switch on cyclic
stick. The force gradient is a link equipped with an
internal spring, and connects brake arm to center
hole in aft bellcrank on pilot pedal adjuster. Brake
and force gradient are like units used in cyclic
system but are different in position of installation.
Brake is mounted on forward side of F.S. 63.33
bulkhead at approximately right B.L. 20 and force
gradient extends forward.
67.4.6 Force Gradient
67.4.6.1 Removal
67.4.6.1.1
Remove pilot seat.
67.4.6.1.2
Remove access panels from cabin
floor as necessary.
67.4.6.1.3 Disconnect
forward end of force
gradient (31, Figure 67-5) from pedal adjuster
(28).
67.4.6.1.4 Remove nut from stud on
magnetic brake arm and remove force gradient.
67.4.6.2 Installation
MATERIALS REQUIRED
NUMBER NOMENCLATURE
C-405 Lockwire
CAUTION
ALL FORCE GRADIENTS ARE SIMILAR IN
APPEARANCE, BUT EACH INSTALLATION
REQUIRES A DIFFERENT PART NUMBER
BECAUSE OF DIFFERENT SPRING
ASSEMBLY.
67.4.6.2.1
Adjust spring preload on force
gradient, if required, as follows:
67.4.6.2.1.1
Remove cap (3, Figure 67-14).
67.4.6.2.1.2
Adjust nuts (6) to hold 2.5 to 3
lbs. (11.1 to 13.3 N) force against spring
assembly (1). Tighten nuts together.
67.4.6.2.1.3
Insert spring assembly (1) into
housing (2) and install cap (3) until all noticeable
end play is eliminated. Secure cap with Iockwire
(C-405) as shown to prevent turning either
direction.
67.4.6.2.2
Place aft end of force gradient
over stud on magnetic brake arm. Secure with
washer, nut and cotter pin.
67.4.6.2.3
Adjust length of force gradient
(paragraph 67.1.6 or 67.1.7) and connect to
pedal adjuster (28, Figure 67-5). Install cotter
pin.
67.4.6.2.4
Install cabin floor access panel.
67.4.6.2.5
Install pilot seat.