5-10 COOLING AND LUBRICATION SYSTEM
INSPECTION
• Check the thermo-switch closing or opening temperatures by
testing it at the bench as shown in the figure. Connect the
thermo-switch
1 to a circuit tester and place it in the oil con-
tained in a pan, which is placed on a stove.
• Heat the oil to raise its temperature slowly and read the col-
umn thermometer
2 when the switch closes or opens.
& 09900-25008: Multi circuit tester set
' Tester knob indication: Continuity test (()
$ Cooling fan thermo-switch operating temperature
Standard (OFF→
→→
→ON): Approx. 88°C (190°F)
(ON→
→→
→OFF): Approx. 82°C (180°F)
!
INSTALLATION
Install the cooling fan thermo-switch in the reverse order of
removal. Pay attention to the following points:
• Apply engine coolant to the O-ring.
• Tighten the cooling fan thermo-switch to the specified torque.
) Cooling fan thermo-switch: 20 N·m (2.0 kgf-m, 14.5 lb-ft)
!
• After installing the cooling fan thermo-switch, be sure to add
engine coolant. (%2-14)
Oil
* Do not contact the cooling fan thermo-switch
1 and
the column thermometer
2 with a pan.
* Take special care when handling the cooling fan
thermo-switch. Do not subject it to strong blows or
allow it to be dropped.
* Replace the removed O-ring with a new one.
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