TM 55-2210-224-34
3-62. AIR PRESSURE CONTROL SWITCHES
This task covers:
a.
Removal
b.
Test
c.
Installation
d.
Adjustment
INITIAL SETUP
Tools
Tool kit SC4940-97-CL-E12
REMOVAL
NOTE
All three control switches are removed in the same manner.
1.
Disconnect air line fitting (1) from control switch
(7).
2.
Remove four screws (2), cover (3), and gasket
(4). Tag and disconnect wires (5).
3.
Remove twoscrews (6) and control switch (7).
TEST
4.
Connect a multimeter to switch leads.
5.
Apply a regulated air source to switch and check
that switch trips at a varied range of pressure
from 5 to 75 psi (34.5 to 517 kPa).
INSTALLATION
6.
Position control switch (7) on mounting bracket.
7.
Install two screws (6).
8.
Connect wires (5) and remove tags. Install
gasket (4) and cover (3) and secure with four
screws (2).
9.
Connect air line fitting (1) to control switch (7).
ADJUSTMENT
10.
Decrease pressure setting by removing cover (8) and turning adjusting screw counterclockwise.
11.
Increase pressure setting by inserting a small screwdriver in hole (9) and turn clockwise.
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