65637bd9



3.1.1.11. Head of the block of cylinders

Sequence of an inhaling of bolts of a head of cylinders

Removal

PERFORMANCE ORDER
1. Disconnect the battery from weight.
2. Remove chains.
3. Remove both cam-shafts.
4. To facilitate dismantle of a head it is recommended to remove both collectors (see subsection 6.1.12 and subsection 6.1.13).
5. Disconnect a reception pipe of the muffler from a collector.
6. Remove the air filter (see subsection 6.1.2).
7. On carburetor engines perform the following works:

  – disconnect fuel hoses from the fuel pump;
  – disconnect a cable of the drive of a butterfly valve;
  – disconnect conducting sockets from the carburetor;
  – disconnect hoses of the vacuum amplifier of brakes, cooling systems, a suction in crankcase gases and other hoses from the corresponding valves and branch pipes of a head of cylinders;
  – remove a rack of the soaking-up collector;
  – on the cars equipped with catalytic converter disconnect the socket from the oxygen sensor.
8. On injector engines perform the following works:

  – execute actions for a decompression of fuel system and disconnect fuel hoses from the fuel distributor;
  – disconnect a cable of the drive of a butterfly valve;
  – disconnect conducting sockets from the camera of a butterfly valve, the soaking-up collector and other details and units;
  – disconnect hoses of the vacuum amplifier of brakes, cooling systems, a suction in crankcase gases and other hoses from the corresponding valves and branch pipes of a head of cylinders;
  – remove a collector rack;
  – on the cars equipped with catalytic converter disconnect the socket from the sensor of the fulfilled gases.
9. Disconnect cooling system hoses from a head of cylinders.
10. Turn out M6 bolt, in a forward left corner of a head of cylinders.
11. Working in the sequence, return represented on rice. The sequence of an inhaling of bolts of a head of cylinders, weaken an inhaling of all ten main bolts of fastening of a head of cylinders. Weaken bolts in stages, on 1/2 turns for reception until bolts do not begin to turn away by hand.
12. Get bolts and washers, having paid attention to their orientation.
13. Working together, remove a head of cylinders, laying, adjusting pins and an oil nozzle (if landing of pins and a nozzle weakened).
14. If the head understands for capital repairs, then be guided by the description in section 3.1.2.6.

Preparation for assembly

PERFORMANCE ORDER
1. Check a condition of carvings of bolts of fastening of a head of cylinders, irrespective of the reason of removal of a head. Bolts are recommended to be changed at each removal of a head of cylinders.
2. Clear demountable surfaces of a head and the block, having closed all openings to exclude dirt hit. Cover gaps in pistons with lubricant which then remove.
3. Check existence of damages on demountable surfaces of a head and the block of cylinders (deep scratches, chips, etc.). Insignificant damages are removed a file, serious damages are removed only grinding.
4. Check deformation of demountable surfaces of a head and the block.

Installation

PERFORMANCE ORDER
1. Wipe dry demountable surfaces of a head and the block of cylinders. Be convinced available the directing pins on both parties of the plane of the block of cylinders and insert an oil nozzle into the center of the block.
2. Put new laying on the block of cylinders, having combined openings in laying with pins and an oil nozzle.
3. With the assistant carefully install a head on the block of cylinders, having combined a head from guides pins.
4. Grease carvings and the lower parts of heads of bolts with pure oil.
5. Dress on washer bolts so that the conic surface of washers was turned from a bolt head.
6. Carefully insert bolts into the corresponding openings in a head (not to drop bolts), tighten them by hand.
7. Tighten bolts 1–10 heads of cylinders in the specified sequence (see rice. Sequence of an inhaling of bolts of a head of cylinders) with the moment of the 1st stage of an inhaling. 11–15 with M6 carving do not tighten bolts yet.
8. Tighten bolts with the moment of the 2nd stage.
9. A minute later also release bolts in the sequence return specified rice. Sequence of an inhaling of bolts of a head of cylinders. Weaken an inhaling gradually, on 1/2 turns for reception until bolts do not begin to turn away by hand.
10. Observing the sequence, tighten bolts with the moment of the 3rd stage of an inhaling.
11. Tighten bolts on a corner of the 4th stage of an inhaling or tighten a dynamometer key with the moment of the 4th stage.
12. Observing the sequence, tighten M6 bolts (bolts 11–15) with the set moment.
13. Attach cooling system hoses.
14. Execute the following operations:

  – attach the being removed conductings, hoses and cables on the soaking-up collector;
  – attach a cable of a butterfly valve;
  – attach a reception pipe of the muffler, the socket of the sensor of the fulfilled gases (if it is provided);
  – install the air filter and an air duct.
15. Establish cam-shafts (see subsection 3.1.1.10).
16. Establish chains and asterisks.
Prevention

If capital repairs of a head of cylinders are executed, then before installation of a cover of a head of cylinders check gaps in valves on the cold engine (see subsection 3.1.1.9).
17. Start the engine and warm up. Check gaps in valves on the heated-up engine (see subsection 3.1.1.9).