Spark plug
1. Mass electrode; 2. Ceramic insulator; 3. Central electrode; 4. Glass mass; 5. Connecting pin
The reason for the increased oil consumption may be the wear of the valve stem seals. Oil seals can also be removed on the installed cylinder head, but this requires a special tool VW-2036 with VW541 / 1 or HAZET 2577-2, and for gasoline engines - compressed air.
Attention! Describes removal on a gasoline engine. In the case of a diesel engine, compressed air is not needed, but then the piston of the corresponding cylinder must be at TDC. Set the engine to TDC for 1 cylinder (see subsection 2.5.2.1).
Removing
1. Remove camshaft and poppets (see subsection 2.7).
2. Set the piston of the corresponding cylinder to BDC (bottom dead center). To do this, turn the crankshaft with a socket wrench behind the belt pulley so that the notch on the belt pulley coincides with the corresponding mark of the toothed belt guard (1 cylinder is now at TDC). At this time, 2 and 3 cylinders are at BDC. Mark the crankshaft pulley from the bottom with chalk, then turn the pulley another 1/2 turn (180°), until the chalk mark matches the corresponding mark. Cylinders 1 and 4 are now at BDC.
3. Remove all spark plugs.
4. Screw the VW 653/3 or HAZET 3428 adapter into the desired cylinder instead of the spark plug and connect the compressed air hose.
5. If there is no special tool at hand, make an adapter from an old spark plug. To do this, bite off the mass electrode (1), break the ceramic insulator with a screwdriver (2), swinging from side to side, break the central electrode (3) and take it out. Remains of the middle electrode together with glass melt (4) and connecting pin (5) knock out with a suitable punch (about 3 mm) (see fig. Spark plug). At the same time, clamp the candle in a vise.
Attention! Do not damage the thread of the spark plug, so as not to damage the thread in the hole in the cylinder head, where the manufactured adapter will be screwed.
6. Wrap the adapter prepared in this way into the desired cylinder and connect a compressed air hose to it.
7. Maintain a constant cylinder pressure of at least 6 bar with compressed air.
8. Screw tool VW-2036 to 1 and 4 bearing brackets and compress the valve springs with tool VW541/1. You can also use the HAZET 2577-2 tool. In this case, screw the counterholder on the tool to the camshaft stud and compress the springs with a spring compressor.
Attention! The piston in this case should be at BDC.
9. Remove the body crackers, loosen the valve springs.
Attention! Knock out firmly seated cone crackers with light blows of a hammer through the mount.
10. Remove the spring plates and valve springs.
11. Take out the oil seals. To do this, the factories use a special tool (VW 10-218 or VW 3047, HAZET 791-5 or HAZET 791-2 impact puller). Old valve stem seals tend to be very tight. Therefore, for removal, an impact puller is often used.
Installation
1. plastic sleeve (A) (supplied with oil seals) put on the valve stem. Oil deflector cap (IN) lubricate with a thin layer of oil, place in the VW 10-214 or HAZET 2577 press tool and carefully push onto the rod guide. Remove sleeve and pressing tool.
Attention! If the installation is carried out without using a plastic sleeve, the oil seal will be damaged! As a result, the engine will consume too much oil!
2. Install the springs, valve plates and compress the springs.
3. Install the cone crackers, loosen the springs.
4. In the same way, replace the remaining oil seals. Install poppets and camshaft.
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