Suzuki Burgman 400 - Service manual > Cooling Fan

Cooling Fan Inspection

Inspect the cooling fan in the following procedures:

1) Remove the left footboard. Refer to "Footboard Removal and Installation".

2) Remove the under cover. Refer to "Under Cover Removal and Installation".

3) Disconnect the cooling fan motor lead wire coupler (1) and fan switch coupler (2).

4) Test the cooling fan motor for load current with an ammeter connected as shown in the figure.

NOTE The voltmeter is for making sure that the battery applies 12 V to the motor. With the motor with electric motor fan running at full speed, the ammeter should be indicating not more than 5 A.

5) If the fan motor does not turn, replace the cooling fan assembly with a new one. Refer to "Cooling Fan Removal and Installation".

NOTE When making this test, it is not necessary to remove the cooling fan.

Cooling Fan Removal and Installation

Removal

1) Remove the radiator. Refer to "Radiator Removal and Installation ".

2) Disconnect the cooling fan switch coupler (1) and remove the cooling fan (2).

Installation

Install the cooling fan in the reverse order of removal.

Pay attention to the following point:

• Tighten the cooling fan mounting bolts to the specified torque.

Tightening torque
Cooling fan mounting bolt: 7 N*m (0.7 kgf-m, 5.0 lb-ft)

Cooling Fan Thermo-Switch Removal and Installation

Removal

1) Remove the left footboard. Refer to "Footboard Removal and Installation".

2) Remove the under cover. Refer to "Under Cover Removal and Installation".

3) Drain engine coolant. Refer to "Cooling System Inspection".

4) Disconnect the cooling fan thermo-switch lead wire coupler (1).

5) Remove the cooling fan thermo-switch (2).

Installation

Install the cooling fan thermo-switch in the reverse order of removal. Pay attention to the following points:

! CAUTION Replace the removed O-ring with a new one.

• Apply engine coolant to the O-ring.

• Tighten the cooling fan thermo-switch to the specified torque.

Tightening torque
Cooling fan thermo-switch: 17 N*m (1.7 kgf-m, 12.5 lb-ft)

• Pour engine coolant. Refer to "Cooling System Inspection".
• Bleed air from the cooling circuit. Refer to "Cooling System Inspection".

Cooling Fan Thermo-Switch Inspection

Inspect the cooling fan thermo-switch in the following procedures:

! CAUTION

• Take special care when handling the cooling fan thermo-switch. Do not subject it to strong blows or allow it to be dropped.
• Do not contact the cooling fan thermo-switch (1) and the column thermometer (2) with a pan.

1) Remove the cooling fan thermo-switch. Refer to "Cooling Fan Thermo-Switch Removal and Installation".

2) Check the thermo-switch closing or opening temperatures by testing it at the bench as shown in the figure.

3) Connect the thermo-switch (1) to a circuit tester and place it in the oil "A" contained in a pan, which is placed on a stove.

4) Heat the oil to raise its temperature slowly and read the column thermometer (2) when the switch closes or opens.

Special tool : 09900-25008 (Multi-circuit tester set)

Tester knob indication
Continuity test ()

Cooling fan thermo-switch operating temperature
Standard (OFF - ON): Approx. 98 ºC (208 ºF)
Standard (ON - OFF): Approx. 92 ºC (198 ºF)

ECT Sensor Removal and Installation

Refer to "ECT Sensor Removal and Installation ".

ECT Sensor Inspection

Refer to "ECT Sensor Inspection".

See also: