ICA-D212-725 (67)
Page 29 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
67.2.5.6.3
Increase or decrease shim
between gear sector and support until backlash is
0.003 to 0.008 in. (0.076 to 0.203 mm).
67.2.5.6.4
With gear sector and shim in
position, turn nuts of spacer and specer
NAS43DD4-56N to increase length until spacer is
a snug fit between gear sector.
67.2.5.6.5
Install bolt through gear sector,
restrain spacer, and torque 50 to 70 in.Ibs. (5.65 to
7.90 Nm).
67.2.5.6.6 Check
backlash of gear sector is
0.003 to 0.008 in. (0.0762 to 0.203 mm). With gear
sector and flex shaft in a neutral position, check
gear sector will move when a maximum force of
4.5 lbs. (20.01 N) is applied at bolt hole with pull
applied perpendicular to gear sector.
67.2.5.6.7 Secure
nuts of spacer together
and bolt to hole in support with lockwire (C-405).
67.2.5.7
Reconnect throttle control tube
and verify throttles operate smoothly.
67.2.5.8
Install cover plates and control
stick boot.
67.2.6
Miscellaneous Control Components
Linkage between collective control jackshaft and
collective sleeve lever on swashplate support
consists of push-pull tubes, bellcranks, support,
and a dual hydraulic power cylinder.
NOTE
For maintenance practices on copilot collective
controls, refer to appropriate Service Instruction.
67.2.6.1 Removal
NOTE
Parts of control system can be removed
separately as needed or completely in practical
sequence. Take precautions against damage by
accidental movement of linkage while
disconnected.
67.2.6.1.1
Remove covers and access
panels as required.
67.2.6.1.2
Remove nuts, washers and bolts
attaching control tube (2 Figure 67-1) to collective
lever (1) and universal (3). Remove control tube.
67.2.6.1.3
Remove nuts, washers and bolts
attaching control tube (6) to cylinder (5) and
bellcrank (8). Remove control tube (6).
67.2.6.1.4
Remove nuts and washers
attaching cylinder (5) to support (4). Remove nut,
washers and bolt attaching cylinder (5) to support
(7). Remove cylinder (5).
67.2.6.1.5
Remove nuts, washers and bolts
from each end of support (4) and lift beam.
Remove support (4).
67.2.6.1.6
Remove nuts, washers and bolts
attaching control tube (9) to bellcrank (8) and
lever (10). Remove control tube (9).
67.2.6.1.7
Remove nuts, washers and bolts
attaching control tube (11) to lever (10) and
control arm (14). Remove control tube (11).
67.2.6.2
Inspection and repair
Inspect and repair collective [pitch control liinkage
components (BHT-212-CR&O)
67.2.6.3 Installation
67.2.6.3.1
Install and align control tube (11,
Figure 67-1) to lever (10) and control arm (14).
Install bolts, washers and nuts. Tighten and
install cotter pins.
67.2.6.4.2
Install and align control tube (9)
to lever (10) and bellcrank (8); install bolts
washers and nuts. Tighten and install cotter pins.
67.2.6.4.3
Install and align control tube (6)
to bellcrank (8) and cylinder (5). Install bolts
washers and nuts. Tighten and install cotter pins.
Содержание ICA-D212-725
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