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Cylinder block (pulley end) > < Measuring radial clearance of crankshaft
Measuring piston projection at „TDC“
Measuring piston projection at „TDC“
  Note
Piston projection at „TDC“ must be measured when installing new pistons or a short engine.
   
Special tools and workshop equipment required
t  Measuring bridge -VW 382/7- from measuring tool -VW 382-
t  Measuring plate -VW 385/17- from universal measuring tool -VW 385-
t  Dial gauge -VAS 6079-

   
Procedure
–  Secure dial gauge -VAS 6079- with measuring bridge -VW 382/7- and measuring plate -VW 385/17- to cylinder block as shown in illustration.
–  Measure projection at each piston at both locations marked with -arrows- (seen in longitudinal direction of engine: at front and rear of piston).
  Note
t  If the measured values for piston projection are not the same for all pistons, use the highest value to determine the correct gasket size.
t  The cylinder head gasket size must be determined separately for each cylinder bank.
–  Depending on piston projection, install corresponding cylinder head gasket according to following table:
  A13-10694
Piston projection above top surface of cylinder blockIdentification
(No. of holes)
0.835 … 0.97 mm1
0.97 … 1.02 mm2
1.02 … 1.13 mm3

   
Identification of cylinder head gasket
1 - Part number
2 - Holes
  Note
The gaskets for the left and right cylinder heads have different shapes and cannot be interchanged.
  A13-10786

Cylinder block (pulley end) > < Measuring radial clearance of crankshaft