Removal and installation of a head cylinders/replacement of laying of a head of cylinders
1 — an air hose 2 — the resonant camera 3 — the gas drive 4 — the drive of a butterfly valve (only at the automatic transmission) 5 — hoses 6 — a plait of cables 7 — a nut, the perepuskny pipeline of the cooling system 8 — maple a belt
9 — a belt pulley of the water pump 10 — a cover of a head of cylinders 11 — the top casing of a gear belt 12 — a gear belt 13 — a reception pipe of the muffler 14 — fastening of an inlet collector 15 — bolts of a head of cylinders 16 — a head of cylinders 17 — laying of a head of cylinders
At removal of a head of cylinders the engine has to be cooled at least to room temperature. Final and inlet collectors remain are connected. Removal for VZ, V5, V6 and BP engines is described. At the end of the head there are instructions on the diesel engine. For a series of engines E it is specified differences in the certain head, see the Section Removal and installation cam-shaft/adjustment of phases of gas distribution.
The faulty head of cylinders comes to light on one or several following signs:
Loss of power.
Loss of cooling liquid. White exhaust clouds on the warm engine.
Oil loss.
Cooling liquid in engine oil, the level of oil does not decrease, and increases. Gray color of engine oil, foam traces on the measuring probe, oil is diluted.
Engine oil in cooling liquid.
Cooling liquid strongly rages.
There is no compression in two next cylinders.
Removal
The B6 engine with system of injection
PERFORMANCE ORDER
To disconnect a weight cable from the battery.
At the same time data from memory of malfunctions of the engine or a protective code of the radio receiver are erased. Before shutdown of the battery it is necessary to read instructions in the Section Removal also installation of the battery.
Injector engine: To weaken collars and to remove an inlet hose.
Automatic transmission: To disconnect a cable of a butterfly valve.
To disconnect all electric wires to a head of cylinders. For simplification of installation of a wire it is necessary to mark with an adhesive tape previously.
To unscrew a cable of weight-1-on the engine.
To disconnect the plug-2 a lambda probe.
To disconnect the combined plug-3-on the ignition distributor.
To disconnect the combined plug of-4 gates of injection.
To disconnect the combined plug of the sensor of a butterfly valve-5-and the regulator of single turns-6-.
To switch-off the plug 4 - 7-on the ignition coil.
To switch-off the combined cooling system thermoswitch plug-8.
To switch-off the plug-9 of the sensor of temperature of cooling liquid.
To disconnect a cable of weight-10-on the engine.
To switch-off the combined plugs of connections of the carburetor-11-.
To disconnect a vacuum brake hose, previously having weakened a collar.
Injector engine
Injector engine
PERFORMANCE ORDER
To weaken hose collars and to disconnect fuel hoses-2-. At shutdown to lay a rag that when easing fuel was not sprayed around fuel-supply lines. At once to close pipelines suitable traffic jams, for example, pure bolts of the corresponding diameter. For simplification of the subsequent installation to mark fuel-supply lines with an adhesive tape.
If is available, to disconnect a vacuum hose-4 tempostat.
To disconnect a ventilating vacuum hose-3-.
Carburetor engine
Carburetor engine
PERFORMANCE ORDER
To weaken hose collars and to disconnect fuel-supply lines on the mechanical fuel pump. At shutdown to lay a rag that fuel was not sprayed around fuel-supply lines. At once to close pipelines suitable traffic jams, for example, pure bolts of the corresponding diameter. For simplification of the subsequent installation to mark fuel-supply lines with an adhesive tape.
To disconnect a hose from the control unit heating of the soaked-up air, for this purpose to weaken a collar.
To disconnect hoses of a heater-5-, previously having weakened collars.
Models from 10/89 g of the issue: To press a ledge - the shooter - a hose collar and to disconnect a heater hose.
On the union there are a consolidation of round section and an intermediate ring. Not to forget them at installation.
To unscrew a nut of fastening of the perepuskny pipeline of the cooling system and to disconnect a bracket.
Injector engine: To remove fastening of an inlet collector.
To weaken bolts of a head of cylinders in the sequence with 1 on 10 for the first pass on 1/2 turns, for the second pass on one whole turn and to turn out completely on the third pass.
Weakening of bolts of a head of cylinders in an inadequate order can lead to deformation or cracks in a head of cylinders.
To check whether all hoses going from a head of cylinders to the engine and a body are disconnected.
To remove a head of cylinders by means of the assistant.
Not to put a head of cylinders after removal on a sealing surface, at the same time completely open valves can be damaged. To lay a head of cylinders on two wooden whetstones.
Installation
PERFORMANCE ORDER
Before installation to clear a shaber the block and a head of cylinders of the consolidation remains. At the same time sealing surfaces should not be scratched. To watch that the remains of consolidation did not fall in cylinders. To cover openings with a rag.
To check that in openings of bolts of a head of cylinders there was no oil, if necessary to remove oil with compressed air. If there is no compressed air, it is possible to clear openings the small screw-driver which is wrapped up by a rag.
Anyway oil has to be removed.
To check a head of cylinders for deformation existence by a steel ruler and the probe.
To check deformation in the specified directions. The most admissible roughness makes 0,15 mm. If boundary value is exceeded, the head of cylinders should be processed (it is carried out in a workshop).
To check a head of cylinders for existence of cracks. If there are cracks, the head needs to be replaced.
To check water, oil and fuel hoses for existence of cracks and gaps if it is required, to replace.
To check valves and guides of valves for existence of wear and damages.
To impose laying of a head of cylinders that openings in the block of cylinders and laying coincided.
To grease with a small amount of oil of a surface of a prileganiye and a carving of bolts of a head of cylinders.
To wrap 10 bolts to a prileganiye to a head of cylinders by effort of a hand. Then bolts should be tightened in three passes. On each pass bolts drag on in the sequence from the 1st on the 10th.
1st pass: 40 Nanometers
2nd pass: 60 Nanometers
3rd pass: 80 Nanometers
The inhaling of bolts of a head of cylinders should be made very attentively. Before an inhaling it is necessary to check the accuracy of a dynamometer key. Besides, it is necessary to follow the sequence of an inhaling precisely.
Injector engine: To delay fastenings of an inlet collector with efforts of 25 Nanometers and 45 Nanometers.
To screw a reception pipe of the muffler on a final collector with effort of 45 Nanometers.
DOHC engine: To apply on the shaded places sealant on a silicone basis (for example, DOW CORNING Q3-7057). To establish new laying of a cover of valves.
SOHC engine: To apply in a laying groove in a cover of a head of cylinders sealant on a silicone basis (for example, DOW CORNING Q3-7057). To impose new laying of a cover.
To establish a cover of a head of cylinders and to screw 10 Nanometers with effort.
Holding a cam-shaft an adjustable spanner, for example, of HAZET 279-15, to unscrew a bolt of fastening of a cogwheel of a cam-shaft. To remove a cam-shaft wheel, if necessary to bring down easy blows of the rubber hammer.
When keeping a cam-shaft not to damage a head of cylinders a wrench.
To unscrew a back casing of a gear belt.
To unscrew fastening bolts - shooters - a forward support of the engine.
To weaken bolts of a head of cylinders in the sequence with 1 on 10 for the first pass on 1/2 turns, for the second pass on one whole turn and to turn out completely on the third pass.
Weakening of bolts of a head of cylinders in an inadequate order can lead to deformation or cracks in a head of cylinders.
Installation
PERFORMANCE ORDER
To check a head of cylinders for deformation. The most admissible deformation on a sealant ache 0,1 mm can make surfaces. If deformation exceeds boundary value, the head of cylinders should be processed (it is carried out in a workshop).
To measure stopper vystupaniye size. The required value: 7 - 8 mm. If necessary to hammer a stopper with the hammer to the specified size. To cover new consolidation of round section with a small amount of oil and to insert it into a stopper groove.
To measure length of bolts of a head of cylinders from bottom edge of a head until the end of a core. The maximum length of 114,5 mm should not be exceeded. If value does not conform to the requirement, the bolt should be replaced.
To wrap 10 bolts of a head of cylinders by effort of a hand so far they will not adjoin to a head. Then to tighten bolts in three passes. On each pass bolts drag on in the sequence represented on an illustration from the 1st on the 10th.
1st pass: a dynamometer key with effort of 30 Nanometers
2nd pass: to tighten on 1/4 turns a rigid key, without removing a key
3rd pass: to tighten on 1/4 turns a rigid key, without removing a key
To screw a forward support of the engine with effort of 45 Nanometers.
To establish a back casing of a gear belt and to screw 10 Nanometers with effort.
To establish a cogwheel and a wedge. For tightening of a bolt of fastening to hold a cam-shaft a key. Inhaling moment: 50 Nanometers.
