Diaphragm unit, VIN 12020001-

/ 9-3 (9400) / 2001 / 2. Engine / Turbocharger system, diesel / Adjustment/replacement / Diaphragm unit, VIN 12020001-

Checking

If the basic boost pressure cannot be adjusted, check as follows:

1.	Disconnect the diaphragm unit's vacuum hose.

2.	Connect 30 14 883 Pressure/vacuum pump to the hose and create a vacuum. Check that the diaphragm unit control arm moves.

3.	Check that the vacuum pressure does not change for 30 seconds.

4.	Remove the equipment and reconnect the vacuum hose.

If the control arm does not move, disconnect it from the turbocharger wastegate and check again.

To remove

1.	Remove the clip and lift off the control rod from the arm.

2.	Disconnect the vacuum hose from the vacuum unit.

3.	Remove the diaphragm unit.

To fit

1.	Grease the control arm pin and fit the vacuum unit to the bracket. Tightening torque 8 Nm (6 lbf ft).

2.	Connect the vacuum hose to the vacuum unit.

3.	Adjust the control arm and refit the clip, refer to Basic setting of the pressure regulator, turbo.

---

---

This project is supported by memberships and donations. If you use this site, please consider Joining SCNA and/or making a donation.