Eagle ICA-D212-725, Instructions Manual

Page: 217 / 729

ICA-D212-725 (29)
Page 20 of 50
CHAPTER 29 – HYDRAULIC SYSTEM (29-00-00)

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
opening between 1100 and 1300 PSIG (7585 and
8964 kPa), and being fully open by 1400 PSIG
(9653 kPa).
CAUTION
DO NOT INCREASE PRESSURE ABOVE 1400
PSIG (9653 kPa).
29.2.4.9.3 Slowly reduce pressure. Observe for
evidence of system relief valve closing at not less
then 1065 PSIG (7343 kPa).
29.2.4.9.4 Continue reducing pressure while
checking action of flight controls. Controls should
lose hydraulic power between 600 and 750 PSIG
(4137 to 5171 kPa), indicating pressure-operated
shut-off valve has closed.
29.2.4.9.5 Shut off hydraulic test stand flow and
reduce pressure to zero. Remove filter bowls and
drain all fluid. Replace filter elements and replace
filter bowls. Tighten filter bowls 100 to 140 in.Ibs.
(11.30 to 15.82 Nm) and secure to housing using
Iockwire (0-405).
29.2.4.9.6 Apply 1000 PSIG (6895 kPa)
hydraulic test stand pressure and bleed air from
system by cycling all controls through full travel a
minimum of 10 cycles.
29.2.4.9.7 Shut off test unit flow and reduce
pressure to zero. Disconnect test unit from
system. If required, connect unit to untested
system and repeat checks.
29.2.4.10 On helicopter S/N 30554 and sub.,
perform steps 29.2.4.9.1 through 29.2.4.9.5,
noting in step 29.2.4.9.4 NO.1 HYDRAULIC and
NO.2 HYDRAULIC and MASTER CAUTION
segments should illuminate at 650 PSI (4481 kPa).
29.2.4.11 When checks are completed, place
BATTERY and INV 1 switches OFF. Install access
doors.
29.2.5 Operational Check (Helicopter
Power)
MATERIALS REQUIRED
NUMBER NOMENCLATURE
C-002 or C-072 Hydraulic Fluid
NOTE
Refer to Chapter 12 for information on usage
and mixing of hydraulic fluid (C-002) and
hydraulic fluid (C-072).
CAUTION
ENGINE START AND RUNUP SHALL BE
ACCOMPLISHED BY AUTHORIZED
PERSONNEL ONLY.
29.2.5.1 Start engine (FMS-D212-725-1).
When main rotor has turned ten revolutions,
shut down engine.
29.2.5.2
Replenish reservoir with hydraulic
fluid (C-002) or hydraulic fluid (C-072) (Chapter
12).
29.2.5.3
Start engine. Operate at idle (FMS-
D212-725-1).
29.2.5.4
Slowly move pilot cyclic, collective,
and directional controls to allowable limits for
ground operation. Repeat at least ten times to
bleed air from system.
29.2.5.5
Shut down engine and replenish
reservoir (Chapter 12).