Adjustment with the diaphragm box and boost pressure control valve mounted on the turbocharger.

Loosen the end piece locknut.
Break the seal, remove the circlip and disconnect the pushrod from the operating arm.
Move the operating arm on the boost pressure control valve towards the "Closed" position and adjust the end piece so that the pushrod can easily be fitted on the operating arm's stud.
Then screw in the end piece 3.5 turns and tighten the locknut. This gives the boost pressure control valve about 3 mm of "prestressing".

Fig 1: Illustration For Step 8
Courtesy of SAAB-SCANIA OF AMERICA, INC.
Carefully withdraw the pushrod and hook it on the stud of the operating arm. Fit the circlip.

Fig 2: Illustration For Step 9
Courtesy of SAAB-SCANIA OF AMERICA, INC.
Check the boost pressure, refer to CHECKING BASIC CHARGING PRESSURE, ON-ROAD (B205L/R, B235R) .

Fig 3: Illustration For Step 10
Courtesy of SAAB-SCANIA OF AMERICA, INC.
Affix a seal to the pushrod.