MD Helicopters MD Explorer - Evaporator Installation; Expansion Valve (EARLY CONFIG); Expansion Valve Removal; Expansion Valve Installation

CSP−900RMM−2 MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Page 410
Revision 34
21-50-00
(2). Remove outlet shroud (1) (ref. Proce
dure 5.A.).
(3). Remove glass fabric tape (C710) (37)
and rubber (C610) (36) from sense
element (35) and forward end of tube
(7).
(4). Loosen band clamp (34) and remove
sense element (35) from tube (7).
(5). Disconnect tube (7).
(6). Remove union (12).
(7). Disconnect tube (6).
(8). Remove adapter (5).
(9). Remove screws (13) and washers (14).
(10). Remove evaporator (15) and gasket
(11).
B. Evaporator Installation
(Ref. Figure 404)
Consumable Materials
(Ref. CSP−SPM)
Item Nomenclature
C610 Rubber, Expanded
C710 Tape, Glass Fabric
(1). Put gasket (11) and evaporator (15) in
their installed position.
(2). Install screws (13) and washers (14).
(a). Torque screws (13).
(3). Install outlet shroud (1) (ref. Procedure
5.B.).
(4). Install union (12) in the outlet of
evaporator (15).
(a). Torque union (12) 460 to 500 in-lb
(51.97 to 56.49 Nm).
(5). Connect tube (7) to union (12).
(a). Torque captive nut of tube (7) 460 to
500 in-lb (51.97 to 56.49 Nm).
NOTE: Make sure washer (30) and strainer
(31) are installed in expansion valve.
(6). Install adapter (5).
(a). Torque adapter (5) 230 to 260 in-lb
(25.99 to 29.38 Nm).
(7). Connect tube (6) to adapter (5).
(a). Torque the captive nut of tube (6) 230
to 260 in-lb (25.99 to 29.38 Nm).
(8). Put sense element (35) against tube (7)
at the 3 or 9 o'clock position, no more
than 12 inch (305 mm) along tube (7)
from its connection to evaporator (15).
NOTE: Do not put rubber between sense ele
ment (35) and tube (7).
(9). Put rubber (C610) around sense
element (35) and full length of tube (7).
(10). Wind glass fabric tape (C710) on rubber
(C610).
(11). Install outlet shroud (1).
The receiver dehydrator must
be replaced each time the com
pressor is removed, or the AC system is
opened. An early failure of the compressor
can occur.
(12). Remove and replace the receiver
dehydrator (ref. Procedure 22.).
(13). Service AC system (ref. Section
12-00-00).
7. Expansion Valve (EARLY CONFIG)
A. Expansion Valve Removal
(Ref. Figure 404)
(1). Remove evaporator (15) (ref. Procedure
6.A.).
(2). Disconnect evaporator inlet port (27).
(3). Disconnect sense tube (33).
(4). Remove nut (38), screw (29), and
washer (28).
(5). Remove expansion valve (4) and clamp
(32).
B. Expansion Valve Installation
(Ref. Figure 404)
(1). Put expansion valve (4) and clamp (32)
in position.
(2). Connect evaporator inlet port (27).
CAUTION