Expansion Valve: Service and Repair

Expansion Valve

To remove
1. Drain the refrigerant from the A/C system.
2. Dismantle the windscreen wipers, use 85 80 144 Puller, windscreen wiper arm.
3. Open the clips on the bulkhead partition cover and remove Bulkhead partition cover.
4. Dismantle the windscreen wiper assembly.
5. Open the clips on the fresh-air filter housing and take out the fresh-air filter.
6. Dismantle the fresh-air filter housing.
7. Dismantle the high and low pressure pipe's PAD connection from the expansion valve and carefully lift out the pipe. Plug the pipe and the expansion valve.





IMPORTANT: The A/C receiver and the compressor oil absorb moisture from the air, which can then not be removed. Plug all connections that are opened immediately.

8. Dismantle the expansion valve. Plug the openings.





To fit
1. Adjust the oil quantity in the A/C system.
2. Fit the expansion valve.





Tightening torque 15 Nm (11 lbf ft)

3. Insert the high and low pressure pipe into position, replace the sealing washers and fit the pipe's PAD connection to the expansion valve.





Tightening torque 15 Nm (11 lbf ft)

4. Fit the fresh-air filter housing. Make sure the clips lock.
5. Fit the fresh-air filter in the fresh-air filter housing.
6. Fit the windscreen wiper assembly.
7. Fit the cover for the bulkhead partition space.
8. Fit the windscreen wipers

Tightening torque 20 Nm (15 lbf ft)

9. Vacuum pump and fill the A/C system.
10. Check the performance of the A/C system.