TM 5-4320-300-14
4-34. LOW OIL PRESSURE CUTOUT SWITCH (CONT)
Location/Item
Action
Remarks
TEST
1. Low oil
Tag wires on switch for
pressure
easy identification during
cutout
reconnection. Remove
switch
nuts and wires from switch
terminals. Using a mul-
timeter, test switch as
follows:
a. Select OHMS function on meter and plug leads
into OHMS jacks. Turn range switch to RX10
scale. Short the two leads together and set the
indicator pointer to zero ohms.
b. Simultaneously touch one lead to each termi-
nal. Meter shall indicate INFINITY (NO
CONTINUITY).
c. While holding leads
to terminals, crank
engine to produce
10 psi reading on
oil pressure gage.
At 10 psi oil pres-
sure the switch
should close (meter
reads 0).
If meter does not indicate 0 (zero) at 10 psi
oil pressure, replace switch. If switch operation
is satisfactory, connect wires to appropriate
terminals on switch, install nuts and tighten
securely.
4-139
