3-9.4. WATER TEMPERATURE SWITCH - MAINTENANCE INSTRUCTIONS
a. The terminals of the water temperature switch are connected into the alarm system, andwhen the
engine circulating water temperature reaches 205 5 (96 2.9 ), the switch closes and turns on the
b. As the water temperature increases, a plunger rises and contacts a wheel which is attached to the
switch actuating lever. A further increase in water temperature forces the contact end of the actuating lever
upwards. When the water temperature reaches 205 5 (96 2.9 ); this lever forces the switch button
upwards into the switch block, thus closing the switch. Since this lever is spring loaded, the contact end of the
lever moves away from the switch button as the water temperature decreases.
An alarm will sound in the pilothouse.
This task covers:
INITIAL SETUP :
Special Environmental Conditions
General Safety Instructions
Start engine and operate
at idle speed.