Vehicles 638.0/1/2 from 10/13/1997
Removing
1. Disconnect the negative cable from the battery.
2. Remove the heater.
3. Remove control box 1 (see fig.10.5).
Pic. 10.5. Temperature and overheat sensors (vehicles 638.0/1/2 from 10/13/1997):
1. Control unit,
2, 3, 5. Covers,
4. Fan,
6. Casing,
7. Retainer,
8. temperature sensor,
9. Overheating sensor,
10. Wiring connector.
4. Remove cover 2.
5. Remove cover 3 from fan 4.
6. Remove cover 5 from casing 6.
7. Remove retainer 7.
8. Remove temperature sensor 8 and overheat sensor 9 from casing 6.
9. Disconnect the sensor wiring at wiring connector 10.
Installation
10. Installation is made in an order, the return to removal.