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

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CSP − 900RMM − 2 MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 408
Revision 28
21-40-00
8. Heating System Flow Control Valve Single
Ball
A. Heating System Flow Control Valve
Single Ball Removal
(Ref. Figure 403)
(1). If necessary, remove cabin seats
assembly (Ref. Chapter 25-20-00).
(2). Remove right aft cabin compartment
interior trim insulation panel adjacent
to aft cabin heat ejector outlet (Ref.
Section 25-20-00).
(3). Remove cotter pin (1), washers (2), and
clevis pin (3).
NOTE:
If possible, prevent damage to insula­
tion. You can use insulation again.
(4). Remove and discard tape (7) and
remove insulation (6) from tube
connections.
(5). 900 CONFIG - Disconnect flexible
coupling assemblies (8) and retainers
(9) from flow control valve (5). Remove
flow control valve.
(6). 900 CONFIG - Keep spacer fitting(s)
(11). Remove and discard seals (10).
(7). 902 CONFIG - Disconnect coupling
nuts (33) from flow control valve (5).
Remove flow control valve.
B. Heating System Flow Control Valve
Single Ball Installation
(Ref. Figure 403)
Consumable Materials
(Ref. CSP − SPM)
Item Nomenclature
C801 Foam
(900 CONFIG)
C709 Tape, Adhesive
(900 CONFIG)
C610 Rubber, Expanded
(902 CONFIG)
C710 Tape, Glass Fabric
(902 CONFIG)
(1). 900 CONFIG - Install threadless
flexible coupling seal on flow control
valve and tube assemblies (Ref.
Threadless Flexible Coupling Seal
Installation).
(2). Put flow control valve in its installed
position.
(3). 900 CONFIG - Install flexible coupling
assemblies, spacers, and retainers on
flow control valve.
(4). 902 CONFIG - Connect coupling nuts
to flow control valve. Torque nuts.
NOTE:
Wrap tube connections with insulation
and tape. Overlap insulation on tube and
line assemblies one inch.
(5). Install insulation on tube connections
and wrap with tape.
(6). Connect control cable to flow control
valve with clevis pin, washers, and
cotter pin.
(7). If necessary, adjust cable until flow
control valve arm touches stop in both
the fully closed and fully open position.
(8). Install right cabin compartment
interior trim panel adjacent to aft cabin
heat ejector outlet (Ref. Section
25-20-00).
(9). Install cabin seats assembly, if applica­
ble (Ref. Section 25-20-00).
9. Flexible − Heater Control Cable Assembly
A. Flexible − Heater Control Cable
Assembly Removal
(Ref. Figure 403)
(1). If necessary, remove cabin seats
assembly (Ref. Section 25-20-00).
(2). Remove cabin compartment interior
trim insulation panel adjacent to
ejector outlet and cabin heat control
cover plate (Ref. Section 06-00-00.
(3). Remove cotter pin (1), washers (2), and
clevis pin (3).
(4). Remove nuts (23), washers (24), angle
(37), and handle (34).
(5). Remove cable plug (35) and washer
(16).
(6). Remove sealing compound from nut
(36) and washer (16).
(7). Pull control cable (4) down and remove
nut (36) and washer (16). Remove
control cable.