Sensor Inspection; Oil Pressure Switch; Thermo Switch; Water Leak Check In Cooling Water System - Takeuchi TB 175 Handbuch

2. Inspection and Adjustment

2.4 Sensor inspection

2.4.1 Oil pressure switch

Disconnect the connector from the oil pressure switch.
Keep the voltameter probes in contact with the switch
terminal and cylinder block while operating the engine. It
is abnormal if circuit is closed.

2.4.2 Thermo switch

Place the thermo switch in a container filled with
antifreeze or oil. Heat it while measuring the fluid
temperature. The switch is normal if the voltameter
shows continuity when the fluid temperature is
107 to 113 deg C.

2.5 Water leak check in cooling water system

Check coolant water leakage from the cooling water
system visually. If any problem is found, Inspect as
follows.
1)Fill coolant water to the normal level in the radiator,
and install the cap tester on the radiator.
2)Operate the manual pump to set the pressure to
0.09 ± 0.015 MPa (0.9 ± 0.15 kgf/cm
tester pressure gage reading drops then, water is
leaking from the cooling water system. Check the
water leaking point.
(R.1)
Oil pressure switch
2
). If the cap
Water leak check in cooling water system
50
Cylinder block
(flywheel side)
Tester probes
Continuity test
Thermometer
Thermo switch
Hot water
Cap tester
Tester probes