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4-7-snyatie-proverka-sostoyaniya-i-ustanovka-golovki-cilindrov.html
4.7. Removal, check of a condition and installation of a head of cylinders
Order of an otpuskaniye of fixture of covers of GRM
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- Dump pressure in a power supply system (see. Check of kompressionny pressure in cylinders).
- Remove a gas-distributing belt (see. Replacement of a belt of a drive of GRM).
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In order to avoid damage of pistons and valves do not turn cranked and distributive shaft at the removed belt of a drive of GRM! |
- Empty cooling system (see. Head Routine maintenance).
- Disconnect from a collector of the inlet pipeline cables of a drive of a butterfly valve and темпостата.
- Remove the inlet pipeline (see. Removal and installation of the inlet pipeline).
- Remove cogwheels of camshafts and a back cover of a drive of GRM.
- Remove the ignition distributor from VV electroconducting.
- Remove the steering pump and the To/in compressor — without disconnecting hydraulic / refrigerator lines, shift components aside and fix them a wire.
- To Otsoyediinta from final collectors of the engine reception pipes of system of production of the fulfilled gases.
- Operating in strictly certain order (see an illustration the Order of an otpuskaniye of fixture of covers of GRM), release fixing bolts and uncover the gas-distributing mechanism.
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- Operating as it should be, the return to a tightening order, in two-three receptions evenly release bolts of fastening of a head of cylinders.
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- Remove a head of cylinders assembled with a final collector.
- In case of need remove from a head a final collector.
- If it is required, take camshafts (see. Removal, check of a condition and installation of components of the klapanny mechanism).
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Check
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- By means of a steel ruler established on an edge and щупа lezviyny type estimate planeness interfaced to the block of cylinders of a surface of a head — in case of need give a head to a pro-point, or replace it.
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The pro-point can be made only if the height of a head will not appear less than limiting admissible value (see. Specifications). |
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The total thickness of the ground-off layer of interfaced surfaces of a head and the block should not exceed 0.20 mm! |
Installation
Order of a tightening of bolts of fastening of final collectors
Order of a tightening of bolts of fastening of heads of cylinders
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- If removed, establish into place camshafts — act as it should be, the return to an order of dismantle of components.
- Having turned a cranked shaft, bring the engine into the provision VMT of the end of a step of compression of the first cylinder (see. Replacement of a belt of a drive of GRM).
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It is considered the first forward of the right number of cylinders (see. Specifications). |
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Make sure of correctness of combination of an adjusting label of a cogwheel of a cranked shaft with reciprocal risky on the case of the oil pump.
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Track, that camshafts were developed by directing pins to the top cut of a head.
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- If removed, establish on a head a final collector. Screw fixing bolts and, operating in strictly certain order (see an illustration the Order of a tightening of bolts of fastening of final collectors), evenly tighten them with demanded effort.
- Establish laying and press a head to the block of cylinders.
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In order to avoid damage of valves and pistons, do not turn distributive and cranked shaft! |
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Make sure that washers are put on bolts of fastening of a head — at the corresponding design of washers they should be established by facets to heads of bolts and the plane to a head.
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- Grease carving surfaces and the bottom cuts of heads of bolts with impellent oil, then screw them and, operating in strictly certain order (see an illustration the Order of a tightening of bolts of fastening of heads of cylinders), in stages tighten with demanded effort.
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For fastening of heads bolts of various length are used! Longer bolts (L1) are established in provisions 4, 7 and 9. |
- Installation of the remained components is made as it should be, the return to an order of their dismantle — do not forget to grease before landing by hermetic an interfaced surface of a cover of GRM. Track, that all fixture was tightened with demanded effort.
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