TM 9-4110-258-13
5.33 DUAL PRESSURE CONTROL SWITCH S2 REPLACEMENT.
This task covers:
a. Removal
b. Installation
INITIAL SETUP
Materials/Parts:
Equipment Conditions:
Lock Washers (2) (Pressure Switch)
Refrigeration system discharged (para 5.8).
1, Appendix G
Right side door open.
Lock Washer (Clamp)
1, Appendix G
Tie Down Straps
24, Appendix E
Marker tags (4)
7, Appendix E
a. Removal.
(1) Loosen screw (1) and remove cover (2).
(2) Tag wire leads (3). Remove two screws (4) and pull leads out of dual pressure control switch (5).
(3) Remove bolt (6), lock washer (7), and clamp (8). Discard lock washer.
(4) Remove tie down straps (9) as necessary.
(5) Tag each capillary tube (10) and loosen two flare nuts (11) from tees (12).
(6) Remove two bolts (13), lock washers (14), and differential oil pressure switch (5).
(7) Remove grommet (15).
b. Installation.
(1) Loosen screw (1) and remove cover (2) from new dual pressure control switch (5).
(2) Install grommet (15).
(3) Install dual pressure control switch (5), two new lock washers (14), and bolts (13).
(4) Using tags on old dual pressure control switch (5) for reference, neatly route new capillary tubing (10) to
tees (12) and carefully coil excess tubing as necessary.
(5) Aline each capillary tube (10) to tee (12) and tighten two flare nuts (11).
(6) Install new tie down straps (9) as necessary.
(7) Install clamp (8) around capillary tubes (10). Install new lock washer (7) and bolt (6).
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