SEAT Workshop Service and Repair Manuals

Adjust the pressure capsule for the exhaust gas turbocharger (engine code BWA)

Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.

Special tools and workshop equipment required

t	Pressure regulating valve -VAS 6342-, see equivalent → Anchor

t	Gauge set -VAS 6341-, see equivalent → Anchor

t	Vacuum pump -VAS 6213-, see equivalent → Anchor

t	Turbocharger tester -VAG 1397A-, see equivalent → Anchor

t	Adjustment tool -VW 387-, please see Correspondence → Anchor

Note t  The following procedures serve for adjusting the pressure capsule. Other values may be present when checking a pressure element already adjusted. t  The pressure capsule must only be adjusted if the rod was removed. t  The adjustment must be carried out with the turbocharger disassembled. Perform the following work:

–  Detach the hose -arrow- of the pressure capsule from the turbocharger. –  Remove the clip located at the top of the turbocharger rod.

–  Loosen lock nut -2-.

–  Pre-adjust the bypass plate -1- with the pressure capsule rod -arrow-, ensuring that it is still possible to turn the bypass plate by hand. –  Tighten the locknut by hand.

–  Connect the vacuum pump -VAS 6213- and the turbocharger tester -VAG 1397A- to the connection II and on the pressure regulating valve -VAS 6342- as shown. –  Close the pressure control valve -VAS 6342- at lever -1-.

–  Move the ring -1- of the vacuum pump -VAS 6213- to position -B- for „pressure“. –  Activate the turbocharger tester -VAG 1397A- and move the sliding switch to position II.

–  Fix the adjustment tool -VW 387- to the exhaust gas turbocharger -arrow-. –  Fix the gauge -VAS 6341/1- with the 30 mm extension -VAS 6341/3- and the flat pushbutton -VAS 6341/4- to the adjustment tool -VW 387-. –  Set the dial gauge -VAS 6341/1- to a pretension of 1 mm with a pressure of 0 bar. –  Position the indicator of the dial gauge -VAS 6341/1- at 0. –  Check gently whether the dial gauge operates. –  Operate the vacuum pump -VAS 6213- until turbocharger tester -VAG 1397A- indicates 350 +/- 5 mbar. –  The dial gauge must display between 4.1 and 4.3 mm. If not, turn the pressure capsule rod until the specified value is displayed. –  Tighten lock nut hand-tight. –  Repeat measurement procedure.   Note The figures in mm refer to the value checked (including pre-tension of 1 mm). –  Lower the pressure to 0 mbar with the pressure regulating valve -VAS 6342-. –  Set the dial gauge -VAS 6341/1- to 0.   Note The subsequent measurements must be carried out in order. The pressure must not drop to 0 during these operations. –  Operate the vacuum pump -VAS 6213- until turbocharger tester -VAG 1397A- indicates 350 +/- 5 mbar. –  Note down the value displayed by the dial gauge -VAS 6341/1-. –  Operate the vacuum pump -VAS 6213- until turbocharger tester -VAG 1397A- indicates between 650 and 700 mbar. –  Lower the pressure to 350 +/- 5 mbar with the pressure regulating valve -VAS 6342-. –  Read off and note value indicated on dial gauge -VAS 6341/1-. –  Add the values 1 and 2, and divide the result by 2. –  The result (average value) must be 5 +/- 0.25 mm. –  If the result (average value) is not 5 +/- 0.25 mm, correct the adjustment, tighten the locknut by hand and repeat the measurement. –  If the result (average value) is 5 +/- 0.25 mm, tighten the locknut to 9 Nm and secure it with sealing paint.

–  Fit the protection plate -1- on the turbocharger rod.