TM 5-4320-300-14
CHAPTER. 2
OPERATING INSTRUCTIONS
Section I. DESCRIPTION AND USE OF OPERATOR'S CONTROLS
AND INDICATORS
WARNING
Personal injury may result if the engine is not turned off during service or maintenance.
Table 2-1. Operator's Controls and Indicators
Control or
Key
Indicator
Function
1
Battery disconnect
Disconnects battery from electrical system of engine. Operated by
switch
pulling and turning either direction.
2
Light switch
Turns control panel lights on and off. Connected between engine
electrical system and light bulbs on control panel.
3
Pressure gage
Monitors pressure in pressure portion of pump. Graduated in
millimeters of mercury (mm Hg), from 0 to 100.
4
Compound gage
Monitors pump discharge or suction in pressure portion of pump.
Graduated in increments of 2 pounds per square inch gage (psig)
from 0 to 100, and 0 to -30 millimeters of mercury (mm Hg).
5
Oil pressure gage
Indicates engine oil pressure in pounds per square inch (psi).
Mechanically connected by an oil line to the lubrication system on
the outlet side of the oil pump. Graduated in 10 psi increments
from 0 to 80 psi.
6
Water temperature
Indicates temperature of engine coolant in degrees Fahrenheit ( F).
Gage
Electrically connected to sending unit in engine block.
2-1
