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Piston and cylinder dimensions > < Dismantling and assembling pistons and conrods

A4 Mk1

4-cylinder Diesel Direct Injection Engine (TDI), Mechanics
Dismantling and assembling pistons and conrods
Checking piston projection at TDC
 
W00-0511

Special tools, testers and auxiliary equipment required

  • ◆ Special tool VW 382/7
 
W00-0129
  • ◆ Special tool VW 385/17
 
V13-0353

→ Piston projection at TDC must be measured when installing new pistons or a short engine. Depending upon piston projection, install the corresponding cylinder head gasket:

Piston projection above top surface of cylinder block

Identification
(No. of holes)

0.91 mm ... 1.00 mm

1

1.01 mm ... 1.10 mm

2

1.11 mm ... 1.20 mm

3
 
A13-0212

→ Cylinder head gasket identification

  • ◆ Part no. = arrow 1
  • ◆ Holes = arrow 2
  • ◆ Production control code = arrow 3 (can be disregarded!)

Note:

If the measured values for piston projection are not the same for all the pistons, use the highest value to determine the correct gasket size

Piston and cylinder dimensions > < Dismantling and assembling pistons and conrods