Replacement of O-rings, heat exchanger
|
Replacement of O-rings, heat exchanger
|
1.
|
Undo the expansion tank filler cap and release the pressure.
|
3.
|
Remove the cover, lower dashboard section, and detach the side trim. Remove the insulation under the heat exchanger
|
4.
|
Remove the screws securing the heat exchanger, the two lower ones together with the plastic cover.
|
5.
|
Pull the heat exchanger out slightly and remove the PAD connection. Detach the pipes from the heat exchanger and remove the O-rings.
|
Use O-rings having part No. 50 45 885.
1.
|
Lubricate the O-rings with synthetic vaseline. Fit the O-rings on the pipes.
|
2.
|
Fit the pipes in the heat exchanger and slide the heat exchanger into the heating and ventilation unit.
|
3.
|
Fit the PAD connection.
Tightening torque: 3-4 Nm (2-3 lbf ft)
|
4.
|
Screw the heat exchanger in place.
|
5.
|
Remove the pinch-off pliers.
|
6.
|
Pressurize the cooling system and check the pipe connection for leakage.
|
7.
|
Fit the insulation, side trim, lower dashboard section and the cover.
|
8.
|
Check the coolant level and top up as necessary.
|