MD Helicopters MD Explorer - Removal and Installation; Supplemental Fuel Transfer Pump; Supplemental Fuel Transfer Pump Installation; Supplemental Fuel Transfer Pump Removal

CSP−900RMM−2MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 401
Revision 1
28-10-00
SUPPLEMENTAL FUEL SYSTEM (OPTION)
REMOVAL AND INSTALLATION
1. Supplemental Fuel Transfer Pump
A. Supplemental Fuel Transfer Pump
Removal
(Ref. Figure 401 and Figure 403)
(1). Defuel supplemental fuel tank (Ref.
Section 12-00-00).
(2). Remove baggage compartment floor
(Ref. Section 53-20-00).
(3). Remove bolts (18), washers (19), bolts
(33), and washers (34) and remove hat
support channel (17) (Ref. Figure 403).
(4). Disconnect electrical connector (27)
from top of fuel tank cover (20).
Aviation Turbine Fuel
(5). Remove quantity transmitter.
(6). Remove lockwire (32) and slide hose
(31) to expose end of vent tube (35).
NOTE: Use care when removing fuel tank cov
er, transfer pump wire harness has approxi
mately 10 in. (25.4 cm) of excess length.
(7). Remove bolts (25) and washers (26).
Remove fuel tank cover (20). Remove
and discard packing (21).
(Ref. Figure 401)
(8). Straighten tab on lockwasher (6) and
remove jam nut (5) and lockwasher.
Discard lockwasher.
(9). Remove connector (8) from cover (7).
(10). Disconnect fuel transfer hose (5) from
transfer pump fitting (7) (Ref.
Figure 403).
(11). Remove bolts (2), washers (3), (Ref.
Figure 401) and remove pump (1) from
fuel tank.
(12). Remove fitting (7) and packing (73)
(Ref. Figure 403) from transfer pump
and discard packing.
B. Supplemental Fuel Transfer Pump
Installation
(Ref. Figure 401 and 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
Aviation Turbine Fuel
NOTE: Lubricate new packing with aviation
turbine fuel (C113).
(1). Install new packing onto transfer pump
fitting and install fitting. Torque fitting
(Ref. CSP-SPM).
(2). Position transfer pump in fuel tank and
install bonding jumper and mounting
bolts. Torque bolts (Ref. CSP-SPM).
(3). Using milli-ohm meter (T1002), test
transfer pump for a class C electrical
bond (Ref. CSP-SPM). Environmental
seal is not required.
(4). Attach fuel transfer hose to transfer
pump. Torque hose (Ref. CSP-SPM).
(5). Install transfer pump wire harness
connector into fuel tank cover and install
lockwasher and nut. Torque nut to 120
to 150 in lb. (13.56 to 16.95 Nm) and
bend up tab on lockwasher.