Eagle ICA-D212-725, Instructions Manual

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ICA-D212-725 (29)
Page 31 of 50
CHAPTER 29 – HYDRAULIC SYSTEM (29-00-00)
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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
29.3.6 Hydraulic Pump (System 2)
System 2 pump is identical to system 1 pump.
System 2 pump is installed on front of
transmission main case.
29.3.6.1 Removal
29.3.6.1.1 Open transmission cowling to gain
access to pump which is located between and
below both hydraulic reservoirs at helicopter
center line. Place suitable containers below pump
to catch spilled fluid.
29.3.6.1.2 Remove fluid from system 2 reservoir
using a suction gun.
29.3.6.1.3 Disconnect hoses from fittings on
pump. Cap fittings and ends of hoses.
29.3.6.1.4 Remove nuts and washers from six
studs at pump flange. Pull pump and gasket
outward off studs. Discard gasket.
29.3.6.1.5 If replacing pump, remove fittings for
use on new assembly. Cover open ports.
29.3.6.2 Inspection
Refer to paragraph 29.3.5.2.
29.3.6.3 Repair
Refer to paragraph 29.3.5.3.
29.3.6.4 Installation
MATERIALS REQUIRED
NUMBER NOMENCLATURE
C-002 or C-072 Hydraulic Fluid
C-007 Bearing Grease
NOTE
Refer to Chapter 12 for information on usage and
mixing of hydraulic fluid (C-002) and hydraulic fluid
(C-072).
29.3.6.4.1 If replacing pump, install 90° elbow
fittings in suction port, and unions in pressure,
case drain, and seal drain ports. Use new
packings.
29.3.6.4.2 Place
gasket over drive quill studs.
CAUTION
DO NOT LUBRICATE SPLINES FOR PUMPS
P/N 731634 (PV3-044-8A) OR 212-076-010-101
WITH NON-METALLIC COUPLING IN
STALLED.
29.3.6.4.3 For pump with metallic splines,
lubricate splines with a thin even coating of
bearing grease (C-007).
CAUTION
ENSURE PUMP CASE IS FULL OF FLUID
PRIOR TO INSTALLATION.
29.3.6.4.4 Fill pump with hydraulic fluid (C-002)
or hydraulic fluid (C-072) through case drain
port.
29.3.6.4.5 Position pump with seal drain down.
Engage shaft in splines of drive quill shaft and
mounting flange over studs. Install a nut and two
aluminum alloy washers on each stud. Tighten
nuts evenly.
29.3.6.4.6 Connect hoses to fittings at suction
pressure, case drain, and seal drain ports
(Figure 29-4).
29.3.6.4.7 Service hydraulic system with
hydraulic fluid (C-002) or hydraulic fluid (C-072).
29.3.6.4.8 Perform
operational check
(paragraph 29.2.3 or 29.2.4).
29.3.6.4.9 Check for leaks. Close transmission
cowling.