108. Water Temperature Warning Light and Sending
(b) Voltage regulator opening voltage.
Unit
with voltmeter connected as shown
on E, figure 56, increase rpm to
a. Removal.
operating speed. Observe reading
(1) Remove the ring and lens from lamp base
on voltmeter. It should read 27.5 to
and remove lamp.
29.5 volts.
If adjustment is
(2) Remove the water temperature warning light
necessary turn the voltage regulator
and sending unit as instructed on figure 57.
adjusting screw clockwise to
b. Cleaning and Inspection.
increase and counterclockwise to
(1) Clean the water temperature warning light
decrease. Set voltage at 29.2 volts.
and sending unit with a cloth dampened with
(c) Current
regulator
maximum
an approved cleaning solvent and dry
amperage.
With
thoroughly.
connected as shown on F, figure 56,
(2) Inspect the water temperature warning light
and either the test set carbon pile
and sending unit for proper operation.
load set up at 25 to 30 amps, or first
Replace a defective warning light or sending
having operated the starter for 10 to
unit.
15 seconds to provide the load,
c. Installation.
increase rpm to operating speed,
observe reading on ammeter at
(1) Install the water temperature warning light
which points first vibrate.
This
and sending unit as illustrated on figure 57.
should be 38 to 42 amperes. If
(2) Install the lamp, lens and ring on the base.
adjustment is necessary, adjust the
current regulator to a0 amperes in
109. Temperature Gage and Thermostat Sending Unit
the same manner as the voltage
a. Removal. Remove the temperature gage and
regulator.
thermostat sending unit as instructed on figure 57.
(d) Replace generator regulator cover
b. Cleaning and Inspection.
and repeat all tests before removing
(1) Clean the temperature gage and thermostat
adapters. Run regulator voltage
sending unit with a cloth dampened with an
and amperage output through
approved
cleaning
solvent
and
dry
several cycles of increasing and
thoroughly.
decreasing engine speed from idle
(2) Inspect the temperature gage and thermostat
to operating to idle speed to make
sending unit for proper operation. Replace a
sure adjustments are stable.
defective temperature gage and defective
(e) Remove adapters and connect
thermostat sending unit.
cables.
c. Installation.
Install the temperature gage and
thermostat sending unit as illustrated on figure 57.
107. Instrument Panel Components
a. Removal and Installation. Remove and install
110. Panel Light Assembly
the instrument panel components as instructed on figure
a. Removal.
(1) Turn and remove lamp cover from base and
b. Cleaning and Inspection. Clean and inspect.
remove lamp.
Replace damaged or defective instrument panel
components.
(2) Remove the panel light assembly as
instructed on figure 57.
AGO 6819A
99
