TM 10-4320-344-24
2.16.20 Start/Stop Switch Maintenance, Model US636HCCD-1.
This task covers:
2.16.20.1 Removal
2.16.20.3
Installation
2 .
1
6 .2 0 . 2 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
Material/Parts
Tags, Appendix C, Item 31
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,
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.
2.16.20.1 Removal.
Do not work on equipment with battery connected. Electrocution hazards is
present if battery is connected. Failure to obey this warning may result in
death or serious personal injury.
a.
Remove four screws (Figure 2-71, 1), wire retainers (2), and six wires (3)
from start/stop switch (4). Tag wires (3).
b.
Remove knob (5), locknut (6), tab washer (7), two spacers (8), gasket (9), and
start/stop switch (4) from control panel (10).
2.16.20.2 Test.
a.
b .
c .
d .
e .
f .
Ensure knob (5) is mounted on start/stop switch (4). Push knob (5) to STOP
p o s i t i o n .
Test continuity between terminals (11) and (12) on right side of switch.
Correct reading is infinity.
Test continuity between terminals (13) and (14) on left side of switch.
Correct reading is infinity.
Pull knob (5) to START position.
Repeat steps b and c above.
Correct reading is 0.
Replace defective start/stop switch (4) if any reading is incorrect.
2-183
