Eagle ICA-D212-725, Instructions Manual

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ICA-D212-725 (67)
Page 52 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
0.312 to 0.313 inch (7.92 to 7.95 mm) diameter.
Deburr holes.
67.5.2.2.9.8
Apply primer (C-204) to holes and
allow to dry.
67.5.2.3 Installation
MATERIALS REQUIRED
NUMBER NOMENCLATURE
C-104 Corrosion Preventive
Compound
67.5.2.3.1
Coat horn assembly (5, Figure 67-
18) with corrosion preventive compound (C-104).
67.5.2.3.2
Insert horn into tailboom through
access door on bottom of tailboom below elevator.
Position assembly with ends through tailboom
brackets (10) and with control arm (6) at right of
center pointing down.
67.5.2.3.3
Position shim sets (9) and
retainers (7) on tailboom brackets (10) and install
attaching washers and bolts. Peel shim sets as
necessary to obtain 0.005 in. to 0.030 in. (0.127 to
0.762 mm) lateral play of horn assembly.
CAUTION
HANDLE RETAINERS CAREFULLY TO AVOID
DAMAGING INNER SURFACES OF BUSHINGS.
67.5.2.3.4
Secure upper and lower retainers
together with two bolts and nuts (with thin
aluminum washers next to bolt heads and shims
(8) between retainers)
67.5.2.3.5
Adjust preload on bearings as
follows:
NOTE
Preload will be measured by using a standard
spring scale applied to control arm (6) of horn
assembly. Apply spring scale tension 90° to
control arm to obtain a correct reading.
67.5.2.3.5.1
With one support retainer set (7)
loosely installed, peel or add to shims (8) on
opposite set to obtain 13 to 16 lb. (57.827 to
71.172 N) preload with bolts torqued to 50 to 70
in-lbs (5.6 to 7.9 Nm).
67.5.2.3.5.2
Adjust opposite support retainer
set (in the same manner) until an overall reading
of 26 to 32 lbs. (115.7 to 141.9 N) of drag is
measured on horn assembly control arm (6).
67.5.2.3.6
Connect control tube to horn
assembly.
67.5.2.3.7 Coat
surfaces of elevator spar
tube with corrosion preventive compound (C-
104). Install each elevator assembly by
inserting spar tube into end of horn assembly
and installing special retaining bolt with washer.
Torque bolt 100 to 140 in.lbs. (11.3 to 15.82
Nm).
67.5.2.3.8
Install bolt (12), washers (13),
and nut (14). Tighten nut (14) snugly but do not
exceed 10 in.lbs. (1.13 Nm). Install cotter pin.
67.5.2.3.9 Check
elevator system rigging.
67.5.2.3.10
Install access door on underside
of tailboom.