MD Helicopters MD Explorer - Fuel Fill Port Check Valve Assembly; Fuel Fill Port Check Valve Assembly Installation; Fuel Fill Port Check Valve Assembly Removal

CSP−900RMM−2 MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 420
Revision 1
28-00-00
8. Fuel Fill Port Check Valve Assembly
A. Fuel Fill Port Check Valve Assembly
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 panels AL155,
AR155, A160, AL165, AR165, A170
(Ref. Section 53-20-00).
System Contamination
(5). Remove right forward fuel cell access
cover (Ref. Section 28-00-00).
(6). Open fuel filler cap (1) and disconnect
filler cap lanyard (2) from check valve
lanyard.
(7). 902 CONFIG - Disconnect cable from
center baffle check valve (15).
(8). Remove nuts (13) and washers (12)
attaching check valve assembly (14) to
fuel cell.
(9). Remove check valve from fuel cell and
discard O-ring (11).
B. Fuel Fill Port Check Valve Assembly
Installation
(Ref. Figure 407)
Consumable Materials
(Ref. CSP−SPM)
Item Nomenclature
C109 Grease
(1). Prepare fill port check valve assembly
and fuel cell fitting faying surfaces for
electrical bonding (Ref. CSP-SPM).
Grease (C109)
(2). Lubricate O-ring (11) with grease
(C109) and install on check valve
assembly (14).
(3). Align check valve to correct orientation
marked UP on valve. Install check
valve assembly in fuel cell with nuts
(13) and washers (12). Torque nuts.
(4). Connect check valve lanyard (2) to fuel
filler cap lanyard. Install fuel filler cap
(1).
(5). 902 CONFIG - Connect cable to center
baffle check valve.
(a). Connect cable to center baffle check
valve.
(b). Adjust cable length to allow 0.50
inch (12.70 mm) slack when center
baffle check valve is in closed posi
tion. Add or remove split rings, as
necessary.
(c). Center baffle check valve must open
at least 45 degrees when fill port
check valve is fully open.
(6). Install right forward fuel cell access
cover (Ref. Section 28-00-00).
(7). Install cabin floor panels AL155,
AR155, A160, AL165, AR165, A170
(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