Eagle ICA-D212-725, Instructions Manual

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ICA-D212-725 (28)
Page 27 of 48
CHAPTER 28 – FUEL SYSTEM (28-00-00)

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 pump outlet plug (19) with bolt, washer, and
packings, and pump drain valve (20) with packing.
28.14.1.6 Cover
pump openings
28.14.2 Installation
NOTE
The screen in S2490 pump outlet (8, Figure 28-7)
is to be removed prior to installing fitting on pump.
28.14.2.1 If installing a replacement boost pump
(16), remove shipping plugs and install adapting
parts as follows:
28.14.2.1.1 Install pump drain valve (20) with
packing in pump (16).
28.14.2.1.2 Install seal drain adapter (18) with
nut and packing in seal drain port.
28.14.2.1.3 Insert pump outlet (8) in top of pump
outlet, and pump outlet plug (19) with packings,
bolt and washer in lower end of outlet. Tighten
bolt but omit lockwire until after hoses are
connected to fitting during sump installation.
28.14.2.2
Position gasket (15) and pump to
sump base (3). Install mounting bolts with thin
aluminum washers. Attach ground jumper (17) on
center aft bolt. Torque bolts 50 to 100 in-lbs.
(5.65 to 11.3 Nm)
28.14.2.3 Connect pump electrical lead to
terminal block (22) on sump base.
28.14.2.4 Install sump assembly (paragraph
28.27).
28.14.2.5 Pressure test system (paragraph
28.7).
28.14.2.6 Service
fuel system.
28.14.2.7 Perform boost pump operational
check (Chapter 96)
28.15 CANISTER TYPE BOOST PUMP
CARTRIDGE
The canister type boost pump incorporates an
integral cartridge pumping element. Replacement of
element reduces damage to fuel cell components
and eliminates need to break cell-to-pump seal
during routine maintenance.
28.15.1 Removal
28.15.1.1 Disconnect and remove all electrical
power from helicopter.
28.15.1.2 Remove allen screw (2, Figure 28-8)
from valve locking bar (1). Rotate bar clear of
cartridge (3).
NOTE
Removal of allen screw will disconnect white
electrical negative (-) lead (4) and will allow valve
locking bar to extend, closing off fuel supply to
cartridge.
28.15.1.3 Disconnect
black electrical positive (÷)
lead (7) from cartridge terminal and move wiring
clear of cartridge area.
28.15.1.4 Remove drain valve (6) from cartridge
center drain port. Allow trapped fuel to drain.
28.15.1.5 Remove retaining ring (5) securing
cartridge (3) in pump housing.
28.15.1.6 Install special cartridge removal tool (8),
or equivalent, in cartridge drain port and secure with
check nut. Using weight, impact cartridge from
pump housing. Remove tool from cartridge.
28.15.1.7 Remove and discard packings (9 and
10).
28.15.2 Cleaning
Clean all foreign matter from cartridge bore and
retaining ring groove in pump housing and from
retaining ring.