Suzuki Boulevard M50, Service Manual, Page: 269 / 454

COOLING AND LUBRICATION SYSTEM 7-9
COOLING FAN THERMO-SWITCH
REMOVAL
• Drain the engine coolant. (

2-17)
• Disconnect the cooling fan thermo-switch coupler
1
.
• Remove the cooling fan thermo-switch
2
.
INSPECTION
• Check the thermo-switch closing or opening temperatures by
testing it at the bench as shown in the figure. Connect the
thermo-switch 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 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. 105 °C (221 °F)
(ON
→
OFF): Approx. 100 °C (212 °F)

INSTALLATION
• Install the O-ring
1
.
• Tighten the cooling fan thermo-switch to the specified torque.

Cooling fan thermo-switch:
17 N·m (1.7 kgf-m, 12.5 lb-ft)
• Bleed air from the cooling circuit. (

2-18)
* Take special care when handling the thermo-switch.
It may cause damage if it gets a sharp impact.
* Do not contact the cooling fan thermo-switch
1
and
the column thermometer
2
with a pan.
Oil
SA
MP
LE