Airframe Fuel Filter Drain Control; Drain Control Removal; Drain Control Installation - MD Helicopters MD900 Instructions Manual

14. Airframe Fuel Filter Drain Control

(Ref. Figure 207)
Prevent fuel vapor ignition.
WARNING
Turn OFF and disconnect all
electrical power. Electrically ground
helicopter before opening fuel system.
Aviation Turbine Fuel
CAUTION
D Residual Fluids
D System Contamination
NOTE:
This task is typical for LH and RH air
frame fuel filter drain control.
A. Drain Control Removal
(1). Disconnect battery and external power
(Ref. CSP−900RMM−2).
(2). Place suitable fuel container under fuel
drain lines.
(3). Push the drain control (1) to drain fuel
from filter bowl (2).
(4). Remove 22 bolts (3) and washers (4)
from access cover (5) and drain control
guard (6). Remove cover and drain
control guard.
(5). Remove bolt (12), washer (13) and
clamp (14) from drain control valve (1).
(6). Remove two bolts (15), washers (16)
and packings (17) that attach the drain
control (1) to the enclosure (22).
MD Helicopters Inc.
Optional Equipment Manual
900P5663200
(7). Pull the drain control (1) with spacer
B. Drain Control Installation
Item
C229
(1). Adjust thickness of shim (19) as
(2). Install shim (19), spacer (18), and
(3). Insert drain control (1) thru enclosure
(4). Install two bolts (15), washers (16),
(5). Install clamp (14), washer (13) and bolt
(6). Apply thin bead of conductive sealant
(7). Install 22 bolts (3) and washers (4) that
(8). Perform Airframe Fuel Filter − Fuel
Airframe Fuel Filter
(18), shim (19) and packing (20) out of
the fuel drain valve (21) retention hole.
Consumable Materials
(Ref. CSP–SPM)
Nomenclature
Sealant, Conductive
required to achieve proper engagement
of drain control (1) with clamp (14).
packing (20) on drain control (1).
(22) and into the fuel drain valve (21).
packings (17) that attach drain control
(1) to enclosure (22).
(12) to secure drain control (1) to
enclosure (22).
Sealant, Conductive (C229)
(C229) to faying surfaces between
access cover (5) and enclosure(22).
attach the access cover (5) and drain
control guard (6) to the enclosure (22).
Supply Vapor Shroud Leak Check/Pres
sure Test.
CSP–900–S4
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