skoda Workshop Repair Guides

Skoda Workshop Service and Repair Manuals

ABOUT US
Removing and installing exhaust gas turbocharger > < Part III

Octavia Mk2

Testing exhaust turbocharger pressure box
Testing exhaust turbocharger pressure box
Special tools and workshop equipment required
   
t  Hand vacuum pump -VAS 6213-
Test condition
l  Engine oil temperature at least 60 °C
l  The hose for the exhaust turbocharger above the charge pressure control solenoid valve -N75- must have access to the pressure unit.
l  charge pressure control solenoid valve -N75- o.k.
l  The exhaust gas system must be tight.
Work procedure
–  Remove engine cover → Chapter.
  W00-10259
–  Start the engine and observe the actuation linkage -A- of the pressure unit at the exhaust turbocharger with a mirror.
–  Now bring the engine with a second mechanic up to high revolutions by spontaneously pressing on the accelerator pedal.
l  Now the linkage -A- must move.
If the linkage does not move:
  N21-10115
–  Connect the hand vacuum pump -VAS 6213- to the pressure unit -arrow-.
  N21-10114
–  Put the switch-over ring -1- of the hand vacuum pump -VAS 6213- in position -B- for “pressure”.
–  Operate the hand vacuum pump -VAS 6213- several times and at the same time observe the linkage.
  N24-10282
l  Now the linkage -A- must move slowly and be positioned at the end stop at approx. 0.070 MPa (700 mbar).
  Note
t  If it is not possible to build up pressure using the hand vacuum pump -VAS 6213- or the pressure drops immediately: Replace pressure unit → Chapter.
t  If the pressure box is o.k. and the linkage -A- does not move: Check the bypass flap lever for smooth operation. If the lever is sluggish or blocked: Replace exhaust gas turbocharger → Chapter.
  N21-10115

Removing and installing exhaust gas turbocharger > < Part III