Audi Workshop Service and Repair Manuals > A2 > Power unit | 3-cylinder TDI unit injector engine (1.4 ltr. 2-valve), mechanics | Enginecrankshaft group, pistons | Pistons and conrods

Checking piston projection at “TDC”

Special tools and workshop equipment required

t	-VW 382/7- from measuring tool -VW 382-

t	-VW 385/17- from universal measuring tool -VW 385-

t	Dial gauge -VAS 6079-

Procedure

–	Check piston projection at “TDC” when installing new pistons or short engine.

–	Install cylinder head gasket corresponding to piston projection according to table below:

Piston projection above top surface of cylinder block in mm	Identification (No. of holes)
0.91 … 1.00	1
1.01 … 1.10	2
1.11 … 1.20	3

Identification of cylinder head gasket

1 -

Part No.

2 -	Production code (can be disregarded)

3 -

Holes

Note

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

Audi Workshop Service and Repair Manuals