MD Helicopters MD Explorer - Gravity Fill Port Filler Neck; Gravity Fill Port Filler Neck Installation; Gravity Fill Port Filler Neck Removal

CSP−900RMM−2MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 419
Revision 1
28-00-00
7. Gravity Fill Port Filler Neck
A. Gravity Fill Port Filler Neck Removal
(Ref. Figure 407)
Aviation Turbine Fuel
(1). Defuel helicopter (Ref. Section
12-00-00).
(2). Remove cabin seats, if applicable (Ref.
Section 25-20-00).
(3). Remove carpet, if applicable (Ref.
Section 25-20-00).
(4). Remove cabin floor panel AR165 (Ref.
Section 53-20-00).
(5). Open fuel filler cap (1) and disconnect
filler cap lanyard (2) from fill port check
valve lanyard.
System Contamination
(6). Remove bolts (3) and washers (4) from
range extender if installed, and filler
neck flange (5).
(7). Remove flexible coupling (8) connecting
filler neck fitting (6) to fuel cell fitting
(9), retain retainer (16) for reinstalla
tion. Remove filler neck and discard
O-rings (7).
B. Gravity Fill Port Filler Neck Installation
(Ref. Figure 407)
Consumable Materials
(Ref. CSP−SPM)
Item Nomenclature
C109 Grease
C229 Sealant, Conductive
(1). Prepare filler neck surface for electrical
bonding (Ref. CSP-SPM).
Sealant, Conductive (C229)
(2). Apply sealant (C229) between range
extender if installed, fuel filler neck
flange and fuselage faying surfaces
(Ref. CSP-SPM).
(3). Install bolts (3) and washers (4)
through range extender if installed,
filler neck flange (5) and aircraft outer
skin. Torque bolts.
Grease (C109)
(4). Lubricate O-rings (7) with grease
(C109) and install on filler neck fitting
(6) and fuel cell fitting (9).
NOTE: Retainer (16) is installed as part of the
lightening protection to ensure no contact
between the filler neck (6) and the fuel cell
fitting (9).
(5). Position retainer (16) and install
flexible coupling (8).
(6). Connect fuel filler cap lanyard (2) to
check valve lanyard and install fuel
filler cap (1).
(7). Install cabin floor panel AR165 (Ref.
Section 53-20-00).
(8). Perform fuel cell leak check/pressure
test (Ref. Section 28-00-00).
(9). Install carpet, if applicable (Ref. Section
25-20-00).
(10). Install cabin seats, if applicable (Ref.
Section 25-20-00).
(11). Fuel helicopter (Ref. Section 12-00-00).
CAUTION