SHUTOFF AND ALARM SYSTEM COMPONENTS
TESTING AND ADJUSTING
MECHANICAL SHUTOFF GROUP,
1.Oil pressure sensing valve. 2. Tee. 3. Water
temperature sensing valve. 4. Shutdown cylinder.
Install a probe or a thermometer as close as
possible to the control valve.
Run the engine. The engine must stop in less
than one minute. from the time that the
temperature of the coolant gets to the opening
temperature for the control valve.
If the engine stops at the correct temperature,
both the control valve and the oil pressure
shutoff are operating correctly. If the engine
does not stop at the correct temperature, do the
following steps: 5. Loosen one of the
connections on the oil supply line for the oil
pressure shutoff. If the engine stops running,
make a replacement of the control valve. If the
engine does not stop running from loosening the
nut, stop the engine.
Check the lines and fittings and the parts in the
shutoff housing for a problem. Make reference
to the Systems Operation for information on how
the parts work together.
Make replacements as necessary and go
through Steps I through 4 again.