Diaphragm unit, 4-cyl

/ 9-5 (9600) / 2003 / 2. Engine / Turbocharger system, diesel / Adjustment/replacement / Diaphragm unit, 4-cyl

Checking

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

1.	Disconnect the diaphragm unit vacuum hose.

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

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

4.	Remove the equipment and connect the vacuum hose.

If the control arm does not move, detach it from the turbo control valve and recheck.

To remove

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

2.	Detach the vacuum hose from the vacuum unit.

3.	Remove the diaphragm box.

To fit

1.	Lubricate the control arm pin and fit the vacuum unit to the mounting. 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, see Basic setting of turbo pressure regulator, 4-cyl .

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