Diesel cylinder head 1.9-I-TDI
- 1 - cylinder head cover;
- 2 - oil filler cap. If the cap is leaking, replace the gasket;
- 3 - sealing gasket. If the gasket is damaged, it must be replaced;
- 4 - disc washer;
- 5 - nut, 10 Nm;
- 6 - cap;
- 7 - to the intake manifold;
- 8 - clamp;
- 9 - pressure control valve;
- 10 - sealing sleeve. If damaged, a new sealing sleeve must be used.
- 11 - cylinder head cover gasket;
- 12 - crankcase ventilation hose;
- 13 - a bolt of fastening of a head of the block of cylinders. When installing, use new bolts. The bolt torques are the same as for the four-cylinder petrol engine;
- 14 - clamp;
- 15 - sealing ring. At installation it is necessary to use a new sealing ring;
- 16 - conical sealing ring;
- 17 - pipelines for supplying fuel under high pressure to fuel injectors. Pipelines must be replaced as a set. Do not bend piping. Tighten the connecting nuts of the pipelines with a torque of 25 Nm;
- 18 - cylinder head;
- 19 - cylinder head gasket;
- 20 - bolt, 20 Nm;
- 21 - eye for lifting the engine
Marking of the cylinder head cover gasket with holes and number
All operations for removing and installing the cylinder head of a diesel engine are the same as the operations for removing and installing the cylinder head for gasoline four-cylinder engines. In this subsection, only the differences for diesel engines are given.
Order of execution
1. Remove the toothed belt.
2. Disconnect the voltage supply rail from the glow plugs.
3. Clean the piping connections to the fuel injectors and high pressure fuel pump. Unscrew the connecting nuts and remove the fuel lines. Close the holes with suitable plugs.
4. Remove the glow plugs and fuel injectors from the cylinder head.
5. To unscrew the bolts of the cylinder head, you must use the appropriate socket wrench (e.g. HAZET 990 Sig-12).
6. Tighten the cylinder head bolts in the same sequence and with the same torque as on four-cylinder gasoline engines.
Warning: The cylinder head of a diesel engine must not be machined.
7. If new pistons are installed on the engine, the protrusion of the pistons from the cylinder block must be measured and, based on the protrusion of the pistons, the thickness of the new cylinder head gasket must be selected.
Piston protrusion | Number of holes |
0.66 - 0.86 mm | 1 |
0.87 - 0.90 mm | 2 |
0.91 - 1.02 mm | 3 |
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