TM 55-1520-240-23-10
16-122
REPLACE EAPS DIFFERENTIAL PRESSURE SWITCH
16-122
INITIAL SETUP
Applicable Configurations:
All
Tools:
Electrician’s Tool Kit, NSN 6625-00-556-4915
Personnel Required:
Aircraft Electrician
Inspector
Equipment Condition:
Remove Diffuser Duct (Task 16-118)
REMOVE
1.
Disconnect electrical plug from pressure switch
housing receptacle (1).
2.
Mark tubing (3) (HI and LOW) and disconnect
from pressure switch (2).
3.
Remove six screws (4) and flat washers (5)
attaching pressure switch housing (1) to EAPS.
4.
Disconnect electrical plug from pressure switch
receptacle (6).
5.
Remove four screws (7), four washers (8), and
pressure switch from housing (1).
6.
Remove two right-angle fittings (9) from pressure
switch (2). Remove and discard O-rings (10)
from fittings.
INSTALL
7.
Install new O-rings (10) on right-angle fittings (9)
and install in new pressure switch.
8.
Install pressure switch (2) in housing and secure
with four screws (7) and washers (8).
9.
Connect electrical plug to pressure switch
receptacle (6).
10.
Attach pressure switch housing (1) to EAPS with
six screws (4) and flat washers (5).
11.
Connect tubing (3) to right-angle fittings (9) on
pressure switch (2).
12.
Connect electrical plug to receptacle on pressure
switch housing (1).
INSPECT
FOLLOW-ON MAINTENANCE:
Install diffuser duct (Task 16-118).
END OF TASK
16-383
