Removal/Installation; Heat/Defog Ejector; Heat/Defog Ejector Removal; Heat/Defog Ejector Installation - MD Helicopters MD Explorer Servicing And Maintenance

1. Heat/Defog Ejector

A. Heat/Defog Ejector Removal
(Ref. Figure 401)
(1). Open landing light window panel N82,
panel N106 and center access panel
B142 (Ref. Section 06-00-00).
NOTE:
Avoid damage to insulation during re­
moval if possible. Reuse insulation upon
installation.
(2). Remove and discard tape (19) and
remove insulation (18) from tube
connections.
(3). 900 CONFIG - Disconnect threadless
flexible coupling assembly (16) and
retainer (6) from heat/defog ejector (7)
and heat/defog valve (5).
(4). 900 CONFIG - Retain spacer fitting
(17), remove and discard seal(s) (15)
from heat/defog ejector (7).
(5). 902 CONFIG - Disconnect coupling
nut (22) from heat/defog ejector (7) and
heat/defog valve (5).
(6). Remove clamp (20) and disconnect
heat/defog plenum sleeve (21) from
heat/defog ejector.
(7). Remove screws (12), nuts (14) and
washers (13) from tangs attaching
heat/defog ejector to structure and
remove ejector.
MD Helicopters, Inc.
Rotorcraft Maintenance Manual
HEAT/DEFOG SYSTEM

REMOVAL/INSTALLATION

B. Heat/Defog Ejector Installation
(Ref. Figure 401)
Consumable Materials
(Ref. CSP−SPM)
Item Nomenclature
Foam (900 CONFIG)
C801
Tape, Adhesive (900 CONFIG)
C709
Rubber, Expanded (902 CONFIG)
C610
Tape, Glass Fabric (902 CONFIG)
C710
(1). Attach heat/defog ejector to structure
with screws, washers and nuts. Torque
nuts.
(2). Install heat/defog plenum sleeve to
heat/defog ejector and install clamp.
Torque hose clamp.
(3). 900 CONFIG - Install threadless
flexible coupling seal with cup facing
tube end (Ref. Section 21-40-00).
(4). 900 CONFIG - Install spacer fitting,
connecting heat/defog ejector to
heat/defog valve with retainer and
flexible coupling.
(5). 902 CONFIG - Connect coupling nut to
heat/defog ejector and heat/defog valve.
NOTE:
Wrap tube connections with insulation
and tape. Overlap the existing insulation on
tube and line assemblies one inch.
(6). Install insulation (18) over tube
connections and wrap with tape (19).
(7). Close landing light window panel N82,
panel N106 and center access panel
B142 (Ref. Section 06-00-00).
21-40-00
CSP−900RMM−2
Page 401
Original