Low-Pressure Lines (Current Config); Ecs Mid-Section To Low-Pressure Switch Tube Removal; Ecs Mid-Section To Low-Pressure Switch Tube Installation; Ecs Evaporator To Mid-Section Tube Removal - MD Helicopters MD Explorer Servicing And Maintenance

1. COMPRESSOR
2. LOW−PRESSURE SWITCH
3. FITTING
4. RECEIVER DEHYDRATOR
5. LH CONDENSER
6. TUBE (MID−SECTION TO LOW−PRESSURE SWITCH)
7. TUBE (EVAPORATOR TO MID−SECTION)
8. UNION
9. PACKING
31. Low−Pressure Lines (CURRENT CONFIG)
A. ECS Mid−Section to Low−Pressure
Switch Tube Removal
(Ref. Figure 411)
(1). Remove the access panels L155, L210,
and R210 (ref. Section 53-30-00).
(2). Evacuate AC system (ref. Section
12-00-00).
(3). Disconnect tube (6) from union (8) and
tee (4).
(4). Remove nuts (13), screws (10), washers
(12), and clamps (11).
(5). Remove tube (6).
B. ECS Mid−Section to Low−Pressure
Switch Tube Installation
(Ref. Figure 411)
Consumable Materials
(Ref. CSP−SPM)
Item Nomenclature
C610 Rubber, Expanded
C710 Tape, Glass Fabric
(1). If tube (6) is a replacement, do these
steps:
(a). Wind rubber (C610) on surface of
tube (5).
(b). Wind glass fabric tape (C710) on
rubber (C610).
(2). Connect tube (6) to union (8) and tee
(3).
(3). Install clamps (11) on tube (6)
MD Helicopters, Inc.
Rotorcraft Maintenance Manual
Legend (Ref. Figure 411)
10. SCREW
12. WASHER
13. NUT
14. BRACKET
15. BRACKET WITH LOCKNUT
16. CLAMP
17. TUBE
18. EVAPORATOR
(4). Attach clamp (11) to bracket (14) with
(5). Attach clamp (11) to bracket (15) with
(6). Torque both captive nuts of tube (6) 460
CAUTION
pressor is removed, or the AC system is
opened. An early failure of the compressor
can occur.
(7). Remove and replace receiver dehydra­
(8). Service AC system (ref. Section
(9). Install access panels L155, L210, and
C. ECS Evaporator To Mid−Section Tube
(Ref. Figure 411)
(1). Remove access panels L155 and L210
(2). Evacuate AC system (ref. Section
(3). Remove glass fabric tape (C710) and
(4). Disconnect tube (7) from unions (8).
(5). Remove nuts (13), screws (10), washers
21-50-00
11. CLAMP
screw (10), washers (12), and nut (13).
(a). Torque screw (10) 20 to 25 in-lb
(2.26 to 2.82 Nm).
washer (12), and screw (10).
(a). Torque screw (10) 20 to 25 in-lb
(2.26 to 2.82 Nm).
to 500 in-lb (51.97 to 56.49 Nm).
The receiver dehydrator must
be replaced each time the com­
tor (4) (ref. Procedure 22.).
12-00-00).
R210 (ref. Section 53-30-00).
Removal
(ref. Section 53-30-00).
12-00-00).
rubber (C610) from forward 12 inch
(305 mm) of tube (7).
(12), and clamps (11).
CSP−900RMM−2
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Revision 34