Coolant Temperature And Oil Pressure Switches - Genie GS-2669 Service And Repair Manual

Service and Repair Manual
Kubota D1105 Engine
4-5
Coolant Temperature and Oil
Pressure Switches
The engine coolant temperature switch is a
normally open switch. The switch contacts close at
approximately 225°F / 107°C. If the coolant
temperature rises above the switch point, the
switch contacts close and the engine will shut off to
prevent damage. The engine will not start until the
temperature drops below the switch point. An
over-temperature indicator light at the ground
controls should turn on when the switch closes.
The engine oil pressure switch is a normally closed
switch. The switch contacts open at approximately
7 psi / 0.48 bar. If the oil pressure drops below the
switch point, the contacts open and the engine will
shut off to prevent damage. A low oil pressure
indicator light at the ground controls should turn on
when the switch opens.
How to Replace the Coolant
Temperature and Oil Pressure
Switches
1 Open the engine side cover and pull up on the
lock pin on the engine pivot tray located under
the radiator. Swing the engine pivot tray out
and away from the machine to access both
switches.
38 GS ™ -2669 RT • GS ™ -3369 RT • GS
2 Tag and disconnect the wiring from the switch.
Remove the switch from the engine.
1 Coolant temperature switch
2 Oil Pressure switch
Bodily injury hazard. Contact
with hot engine fluids or
components may cause severe
burns.
3 Install the new switch and tighten. Torque to
8-18 ft-lbs / 11-24 Nm.
Note: Always use pipe thread sealant when
installing a new switch.
™ -4069 RT
May 2018
Part No. 1272219