Cylinder Head Gasket - New Metal

Group: 15

Number: 94-01

Date: Nov. 1, 1994

Subject:
Metal cylinder Head Gasket

Model(s):
Golf III / Jetta III 1.9 liter
Diesel (engine code AAZ) from 1993 m.y.

File this Technical Bulletin in Repair Manual No. W42 011 294 103

These Repair Manual pages are new and will be integrated into the next Repair Manual update.

Cylinder head, removing and installing

Metal cylinder head gasket

From 11.93 all 1.9 liter Diesel engines are equipped with a new metal cylinder head gasket with silicone coating.

When making repairs it is no longer necessary to tighten the cylinder head bolts by an additional 1/4-turn (90°) with the engine warm.

The four-step procedure for tightening the cylinder head bolts during assembly has not changed.

When installing a new metal cylinder head gasket, observe the following:

- Remove remains of old gasket from cylinder head and cylinder block. When doing so, make sure that sealing surfaces are not grooved or scratched. When using emery paper it must be no coarser than 100 grade.

- Carefully remove any debris left behind when removing old gasket.

- Leave new cylinder head gasket in its packaging until just before installing.

- Handle new gasket with extreme care. Damage to silicone coating and in area around seams can result in leaks.

Note:

^ The new metal cylinder head gasket can be installed on all 1.9 liter Diesel engines manufactured before 11.93.

^ It is NOT necessary to re-torque cylinder head bolts after the first 1,000 km (600 mi).