MD Helicopters MD Explorer - Supplemental Fuel Check Valve Installation

CSP−900RMM−2 MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 410
Revision 19
28-10-00
NOTE: Use care when removing fuel tank cov
er, transfer pump wire harness has approxi
mately 10 in. (25.4 cm) of excess length.
(6). Remove bolts (25) and washers (26).
Remove fuel tank cover (20). Remove
and discard packing (21).
(7). Disconnect pump to auxiliary cell outlet
hose (77) from check valve (80).
(8). Remove check valve from bulkhead
tube fitting (48) and discard packing
(79).
B. Supplemental Fuel Check Valve
Installation
(Ref. Figure 403)
Consumable Materials
(Ref. CSP−SPM)
Item Nomenclature
C702 Lockwire
C113 Fuel, Aviation Turbine
Special Tools
(Ref. CSP−SPM)
Item Nomenclature
T1002 Milli−Ohm Meter
Upon installation of check
valve, insure arrow on valve
points in direction of fuel flow in system.
Aviation Turbine Fuel
NOTE: Lubricate new packing with aviation
turbine fuel (C113).
(1). Install new check valve with new
packing on bulkhead tube fitting.
Torque check valve (Ref. CSP-SPM).
(2). Using milli-ohm meter (T1002), test
check valve for a class S electrical bond
(Ref. CSP-SPM).
(3). Attach pump to auxiliary cell outlet
hose to check valve. Torque hose (Ref.
CSP-SPM).
(4). Install new packing into groove on top
of fuel tank and install cover. Install
and torque bolts (Ref. CSP-SPM).
(5). Slide vent hose to equally cover gap
between vent tubes and install lockwire
(C702)
(6). Connect wire harness to transfer pump
connector.
(7). Install support hat channel. Torque
bolts (Ref. CSP-SPM).
(8). Install baggage floor (Ref. Section
53-20-00).
(9). Perform supplemental fuel tank
leak/pressure test.
(10). Perform supplemental fuel quantity
operational test.
(11). Service fuel tank as required (Ref.
Section 12-00-00).
CAUTION