MD Helicopters CSP-900RMM-2, Servicing And Maintenance

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CSP − 900RMM − 2 MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 428
Original
28-00-00
12. Fuel Vent System Components
A. Fuel Vent Components Removal
(Ref. Figure 411)
NOTE:
This task is typical for Fuel Vent Sys­
tem Components removal.
Helicopter must be defueled be­
fore floor panels A160, A170,
and/or A217 or both AL165 and AR165 are
removed. Structural damage can occur if
any of these panels are removed with fuel in
the helicopter.
(1). Remove cabin floor panels AL155,
AR155, A160, AL165, AR165, A170,
A217, AL230, AR230 (Ref. Section
53-20-00) as required.
Aviation Turbine Fuel
(2). Remove and discard lockwire and
disconnect fuel vent hoses from fuel
vent float/rollover valve vent tubes,
interconnect tube assemblies, standpipe
assemblies, and flame arrestors, as
required.
Residual Fluids
System Contamination
(3). Disconnect bonding jumpers and
remove bonding clamps, cushioned
support clamps, and attaching hard­
ware, as required, to remove intercon­
nect tube assemblies, standpipe
assemblies, and flame arrestors, as
required.
(4). S/N 0033-subs - Remove forward left
vent ducts as required.
(a). Remove sealing compound from
transition duct, elbow duct and
grommets.
(b). Disconnect transition duct from
float/rollover valve and elbow duct
and remove from bulkhead.
(c). Disconnect elbow duct from transi­
tion duct and fuel vent hose and
remove from bulkhead.
B. Fuel Vent Components Installation
(Ref. Figure 411)
NOTE:
This task is typical for Fuel Vent Sys­
tem Components installation.
Consumable Materials
(Ref. CSP − SPM)
Item Nomenclature
C206 Sealing Compound
C242 Adhesion Promoter
C432 Cleaner
C702 Lockwire
C817 Pad, Scouring, Cellulose/Nylon
(1). Prepare fuel vent component surfaces
for electrical bonding (Ref. CSP-SPM).
(2). Install interconnect tube assemblies,
standpipe assemblies, and flame
arrestors, as required with bonding
jumpers and remove bonding clamps,
cushioned support clamps, and attach­
ing hardware, as required.
Torque
hardware as required.
Sealing Compound (C206)
(3). Apply sealing compound (C206) to
completely cover bonding clamp and
hardware on aft flame arrestor.
(4). Connect fuel vent hoses to float/rollover
valve vent tubes, interconnect tube
assemblies, standpipe assemblies, and
flame arrestors, as required. Secure
with two to three turns of lockwire
(C702).
(5). S/N 0033-subs - Install forward left
vent ducts as required.
(a). Clean residual sealing compound
from transition duct, elbow duct,
float/rollover valve, and grommets
faying surfaces as required. Use
cleaner (C432).
CAUTION
CAUTION