TM 9-4110-256-14
b. Installation.
(1) Loosen screw (1) and remove cover (2) from new dual pressure control switch (5).
(2) Install dual pressure control switch (5) and two bolts (12).
(3) Using tags on old dual pressure control switch (5) for reference, neatly route new capillary tubing (9) to
tees (11) and carefully coil excess tubing as necessary.
(4) Aline each capillary tube (9) to tee (11) and tighten two flare nuts (10).
(5) Install clamp (8) around capillary tube (9). Install new lock washer (7) and bolt (6).
(6) Push two wire leads (3) into dual pressure control switch (5) and using tags and wiring diagram (fig. 2-4),
install wire leads and screws (4). Remove tags.
(7) Install cover (2) and tighten screw (1).
(8) Adjust HIGH PRESSure CUTOUT to 305, low pressure CUT IN to 0, and low pressure CUTOUT to 15 IN.
VAC.
NOTE
FOLLOW-ON MAINTENANCE:
5-71