Coolant Temperature Gauge - Check-
ing (1-13)
Check for a blown fuse in the temperature gauge sending
unit circuit.
Check the wiring from the gauge to the sending unit for
a broken connection.
Venting the Cooling System (1-14)
The cooling system must be designed to allow air to
escape while filling the coolant system.
During engine operation, coolant will continuously flow
through the engine vent line to remove air from the
coolant.
Engine Vent Line
The cooling system vent line is plumbed from a special
connection located on the top of the front water manifold.
The line then goes to the radiator fill tank or auxiliary tank
above the coolant level.
Section 1 - Cooling System Coolant Temperature Gauge - Checking (1-13)
N14 Page 1-35
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