audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

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

A3 Mk1

4-cyl. Diesel Direct Injection Engine (TDI), Mech. Components
Dismantling and assembling pistons and conrods
Checking piston projection at TDC
 
W00-0511

Special tools and workshop equipment required

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

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

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

 
A15-0514

→ Cylinder head gasket identification

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

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