The electric motor of the fan of the cooling system GPB 0 130 303 204 (dv. ZMZ-4062) or 70.3730 (dv. 3M3-402) - collector, with excitation from permanent magnets
The electric motor is switched off via a relay by a TM108 temperature sensor installed in the radiator tank.
Technical characteristics of the engine GPB 0 130 303 204 (70.3730)
- - Rated voltage, V - 12 (12)
- - Power, W - 180(110)
- - Rotation frequency, min-1 - 3000 (2500)
- - Current consumption, no more, A - 30 (14)
- - sensor contact closure - 92+3˚s;
- - opening sensor contacts - 87+3˚s
Removing the electric fan with the ZMZ-406 engine
1. Disconnect the negative battery terminal.
- 2. Disconnecting the motor connector
- 3. Using a 10 wrench, unscrew the nut securing the expansion tank hose clamp
- 4. Remove the clamp
- 5. Using a 10 wrench, unscrew the two nuts of the upper fastening of the fan shroud to the radiator
- 6. We unscrew the two nuts from the bottom, also with a 10 key
- 7. Remove the electric fan with a casing
- 8. Using a 10 wrench, unscrew the two remaining nuts securing the electric motor to the casing
- 9. Removing the fan from the shroud
Removing the electric fan with the ZMZ-402 engine
- 1. Disconnect the negative battery terminal
- 2. Remove the radiator lining and engine mudguard
- 3. Disconnecting the connector
- 4. Using a 12 key, unscrew the four screws securing the fan shroud
- 5. Carefully lower it, trying not to touch the radiator cells and oil cooler tubes, take out the fan
Install in reverse order
Disassembly of the electric fan
- 1. Using a 10 key, unscrew the three nuts securing the electric fan to the casing and take it out.
- 2. With a beard we knock down the retaining semi-ring from the axis of the electric motor
- 3. Removing the fan impeller
- 4. To check the health of the electric motor, apply a voltage of 12 V to its terminals, observing the polarity indicated on its connector
but to carry out on the car without removing or disassembling the electric fan
Checking the electric fan switching circuit
- 1. Disconnect the wires from the electric fan switch switch
- 2. Turn on the ignition and close the contacts
3. If the fan starts working (and it didn’t turn on before when the engine overheated), then the sensor is faulty.
In this case, drain the coolant from the radiator and replace the sensor.
If the fan is not working, check that the 30 amp main fuse for the electric fan is good; check the fan motor.
The main fuse of the electric fan is installed in a common block with the main fuse of the on-board network.
Using a voltmeter or test lamp, check for voltage in the wiring connector connected to the fan with the fan sensor wires shorted;
Replacing the blower motor relay with a known-good one, test its operation
Removing the electric fan relay
< img src="/images/stories/gaz3110/elek/ven21.JPG" alt="Replacing the radiator fan" title="Replacing the radiator fan" style="margin: 5px;" width="314" height="208"
Disconnect the relay connector (when the ignition is off)
Using a 10 key, unscrew the relay mounting nut and remove it
Replacing the sensor for turning on the electric fan
You can not completely drain the coolant from the radiator, just lower its level below the sensor.
Turn off the ignition and disconnect the wires from the sensor
Use the 30 key to turn off the sensor
Replace the sealing washer on the new sensor. Connecting connectors