TM 10-4320-344-24
2.16.9 Low Oil Pressure Cutoff Switch Test. Model US636HCCD-1.
This task covers:
2 .
16 . 9 . 1 T e st
INITIAL SETUP
Tools
General Mechanic’s Automotive
Tool Kit, Appendix B, Section
III, Item 1
Multimeter, Appendix B, Section
III, Item 2
Equipment Conditions
Pumping station shut down, TM
10-4320-344-10.
Battery disconnected, paragraph
2 .
1
5 .
4.
Equipment Conditions (Continued)
Control Panel Cover Assembly removed, refer
to paragraph 2.16.2.
General Safety Instructions
To prevent rolling or sliding, do not work
on equipment that is not securely
s t a b i l i z e d.
Do not work on equipment with battery
connected.
Electrocution hazard is present
if battery is connected.
Do not work on equipment without following
standard shop safety precautions.
2.16.9.1 TEST.
Do not work on equipment with battery connected.
present if battery is connected.
Failure to obey
serious personal injury.
a.
b .
c .
d.
e .
f .
g .
Electrocution hazard is
this warning may result in
Any incorrect reading indicates a defective switch.
Remove screw (Figure 2-60, 1) and oil pressure gauge wire (2) from horn
assembly (3).
Check continuity between terminal of wire (2) and switch terminal (4).
Correct reading is 0.
Check continuity between terminal of wire (2) and switch terminal (5).
Correct reading is 0.
Push in and hold switch button on face of oil pressure gauge (6).
Repeat
steps b and c.
Correct readings should be infinity.
Release switch button on face of oil pressure gauge (6).
Refer to paragraph 2.16.10 and replace oil pressure gauge (6) if defective.
Install wire (2) on horn (3) and secure with screw (l).
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