TM 5-4310-368-14
a. Testing and Adjustment
(1) Remove pressure switch. Refer to organizational maintenance.
(2) Connect pressure switch to proper pressure source.
(3) Connect multimeter to the common and normally closed contacts of the pressure switch.
(4) Slowly apply pressure to the pressure switch. Note the pressure at which the contacts open.
(5) The contacts should open as follows:
(a) Engine oil pressure - 1 + 1/2, -0 PSI.
(b) Compressor oil pressure - 600 +50, - 0 PSI.
(c) Air pressure switch - 3500 +150, -0 PSI.
(6) Slowly decrease the air pressure until the contacts reclose. Note the pressure at which the contacts reclose.
(7) The contacts should reclose as follows:
(a) Engine oil pressure - 1 + 0, 1/2 PSI.
(b) Compressor oil pressure - 600 + 0, -50 PSI.
(c) Air pressure switch - 3000 -0, +500 PSI.
(8) Adjust or replace defective switch.
5-24.
This task covers:
a. Removal
b. Installation
INITIAL SETUP
Applicable Configurations
All
5-47
