MD Helicopters MD Explorer - Engine Fuel Feed Hose; Engine Fuel Feed Hose Removal; Engine Fuel Feed Hose Installation

CSP−900RMM−2 MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 446
Original
28-00-00
21. Engine Fuel Feed Hose
A. Engine Fuel Feed Hose Removal
(Ref. Figure 418)
NOTE: This task is typical for LH and RH En
gine Fuel Feed Hose removal.
Aviation Turbine Fuel
Make sure shut-off valve is in
OPEN position. Take precau
tions to catch residual fuel when removing
engine feed hose.
(1). 900 CONFIG - Remove engine fuel
feed hose.
(a). Open transmission access door
assembly L210 or R210 (Ref. Section
06-00-00).
(b). Disconnect male ratcheting fitting of
engine fuel feed hose (1) from frangi
ble valve (2) fitting. Pull back on end
to disengage ratchet, then unscrew.
(c). Remove and discard lockwire and
disconnect fuel feed hose assembly
from engine driven fuel pump elbow
fitting.
(2). 902 CONFIG - Remove engine fuel
feed hose.
(a). Open upper and lower transmission
access door assembly L210 or R210
(Ref. Section 06-00-00).
(b). Remove aft swashplate fairing
assembly (Ref. Section 53-30-00).
(c). Remove screws attaching FMU vapor
shroud box (5) to FMU connector.
(d). Remove and discard lockwire and
disconnect vapor shroud duct from
top of FMU vapor shroud box.
(e). Open FMU vapor shroud box.
(f). Remove and discard lockwire from
vapor shroud hose (4). Disconnect
vapor shroud hose.
(g). Remove and discard lockwire and
disconnect lower end of engine fuel
feed hose (3) from frangible valve (2)
fitting.
(h). Disconnect upper end of fuel feed
hose assembly from engine driven
fuel pump elbow fitting.
(i). Remove fuel feed hose assembly with
vapor shroud hose and spacers.
(j). Remove vapor shroud hose and
spacers from fuel feed hose assembly.
B. Engine Fuel Feed Hose Installation
(Ref. Figure 418)
NOTE: This task is typical for LH and RH En
gine Fuel Feed Hose installation.
Consumable Materials
(Ref. CSP−SPM)
Item Nomenclature
C207 Sealing Compound, Fuel Resistant
C702 Lockwire
(1). 900 CONFIG - Install engine fuel feed
hose.
(a). Connect fuel feed hose (1) to engine
driven fuel pump elbow fitting.
Torque fuel feed hose nut and safety
with lockwire (C702).
(b). Connect engine fuel hose (1) male
ratcheting fitting to frangible valve
fitting (2). Torque fitting hand tight.
Ratchets on hose and valve must be
fully engaged.
(c). Perform fuel booster pump operation
al test (Ref. Section 28-00-00) and
check for fuel leakage.
(d). Close transmission access door
assembly L210 or R210 (Ref. Section
06-00-00).
(2). 902 CONFIG - Install engine fuel feed
hose.
CAUTION