REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Nissan Sunny (from 1991 to 1997, the year of issue)

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Nissan
	Sunny
		Instructions
		Maintenance
		Engines
			The petrol engine of 1.4 and 1.6 liters
			The petrol engine of 2.0 liters
			Diesel engine
				Specifications
				Toothed belt
				Replacing cylinder head gasket
				Valves
				Replacing the valve stem seal
				Checking the valve guides
				Lapping valve seat
				Processing cylinder head / valve
				Checking / adjusting valve clearance
				Compression Test
				V-belt
				Faults Engine
				Engine lubrication system
				Oil circuit
				Removing and installing sump
				Oil pump
				Cooling system
				Injection Device
				Spark plug
				Power system
				Check / replacement of valve fuel cut
				No-load speed and the maximum speed
				Sprayers
				Start feeding high pressure fuel pump
				Operation in winter
				Technical data of the power of a diesel engine
				Helpful tips for owners of diesel car
		Cooling
		Heating and ventilation system
		Fuel and exhaust system
		The system of the engine is started
		Coupling
		Transmissions
		Axles
		Brakes
		Suspension and steering
		Body
		Electrical

printable version

Replacing cylinder head gasket

Cylinder head

1. Laying the cylinder head cover (always replace)
2. Bushing
3. Rubber bush
4. The main bearing caps
5. Rear camshaft oil seal (always replace)
6. The rear camshaft gear
7. Rear Cover
8. The hydraulic system valve tappets
9. The rotary valve mechanism
10. The upper valve spring plate
11. The valve stem seals
the valve stem
12. Valve spring
13. Support the valve spring
14. Valve
15. The vortex chamber
16. The valve seat

17. The cylinder head gasket (always replace, depending on the size of the pistons are pads of different thicknesses)
18. Designated applying sealing means (before installing the cylinder head cover gasket on these places put the sealing means)
19. Camshaft
20. The front oil seal camshaft (always replace)
21. Bushing
22. Front Cover
23. The rubber bushing
24. Spring
25. The front camshaft gear
26. The side plate (for the camshaft sprocket)

The numbering of the cylinder head bolts

The procedure for tightening bolts

Withdrawal

PERFORMANCE ORDER

1. Disconnect the battery earth cable.

A warning

In this electronic memory is erased, for example, a radio receiver code. Before disconnecting the battery should read notes in Section 7.2.

2. Completely drain the coolant and collect it in a container.

3. Remove the front exhaust pipe.

4. Disconnect from the cylinder head all coolant hoses.

5. Remove the air duct.

6. Remove the heat shield plate of exhaust manifold.

7. Remove the exhaust manifold.

8. Remove the cylinder head cover gasket.

9. Establish the piston of 1st cylinder TDC.

A warning

After that, the position of the crankshaft and the camshaft must not be changed.

10. Remove the timing belt.

11. Loosen the cylinder head bolts in the sequence of the 3 passes (see. Fig. The numbering of the cylinder head bolts).

12. Loosen all screws by 1/2 turn at a predetermined sequence.

13. Loosen all screws by 1 turn.

14. Remove all the screws.

A warning

The cylinder head can deform or burst, if not the procedure of loosening the bolts.

15. Check that all hoses and wires leading from the cylinder head to the engine and body have been detached.

16. Remove the cylinder head with the assistant.

A warning

After removal of the cylinder head not put on the sealing surface, the damage can be fully open valve. Put the cylinder head on wooden blocks 2.

Setting

PERFORMANCE ORDER

1. Clean the cylinder head and check for deformation.
2. Check for water, oil and fuel hoses for damage and cracks, replace if necessary.
3. Check the valves and valve seats for wear and damage.
4. Install the cylinder head gasket so as to coincide the holes in the cylinder block and cylinder head gasket.
A warning There cylinder head gasket of different thickness, which are designated by 1, 2 or 3 at the edge notches. If you are replacing only the gasket, be sure to install a new gasket of the same designation. If you replace or repair the cylinder block, pistons, connecting rods and crankshaft, the thickness of the lining must be selected according to the amount of protrusion of the pistons (performed in the workshop).
5. Put the cylinder head.
6. Cover the cylinder head bolts and washers prokladnye a thin layer of clean engine oil and screw according to the markings (see. Fig. Procedure screwing bolts). Make sure that the beveled side prokladnyh washers faces the bolt heads. The flat side of the washer facing the cylinder head.
7. Replace the cylinder head bolts by hand until it makes contact with the shoulder.
8. Then tighten bolts 1 to 10 for 5 passes.
9. At each pass bolts should be tightened in a predetermined sequence.
10. Tighten bolts 1 to 10 with a force of 40 Nm
11. Tighten bolts 1 to 10 with a force of 90 Nm
12. Fully loosen the bolts to 10 to 1.
13. Tighten bolts 1 to 10 with a force of 40 Nm
14. Tighten the bolts 1 to hard key 10 in a single pass at 75 ?�.
15. This requires measuring the angles, if this device is not, tighten bolts 1 to 10 with a force of 90 Nm.
A warning Tightening the screws should be done with great care. Bolts must always be tightened in 5 passes. Before tightening, check the accuracy of the torque wrench. Also be sure to comply with tightening sequence.
16. Install the timing belt.
	17. Install the cylinder head with a new gasket, apply pre-sealing means on the bearing caps 1 and 5.
18. Apply sealing means at locations opposite the cylinder head cover.
19. Slightly tighten the bolts to 4 Nm max.
A warning If you tighten the screws too much can cause leaks.
20. Screw the exhaust manifold with a force of 20 Nm
21. Screw the plate heat shield of the exhaust manifold.
22. Install the air duct.
23. Attach the water hoses on the cylinder head and secure with clamps.
24. Install the front exhaust pipe.
25. Connect the battery weight.
26. Fill the coolant.

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