Audi 100

1982-1990 of release

Repair and car operation

3.2.2.1. Removal and installation of a head of the block of cylinders

THE GENERAL DATA

Head of the block of cylinders, camshaft and valves

1 – the inlet valve; 2 – the final valve; 3 – a block head; 4 – the plug directing; 5 – маслосъемный a cap; 6 – a washer basic valve springs; 7 – a valve spring external; 8 – a valve spring internal; 9 – a plate of springs of the valve; 10 – a cracker;

11 – a camshaft cogwheel; 12 – a bolt of fastening of a cogwheel; 13 – an epiploon; 14 – шпонка; 15 – a bearing cover; 16 – a washer; 17 – a nut of fastening of a cover of the bearing; 18 – a camshaft; 19 – a valve hydropusher

Order of an inhaling of bolts of fastening of a head of the block of cylinders

The engine is removed from the car

PERFORMANCE ORDER

1. To turn away a nut and to remove the top cover 2 drives of a camshaft (fig. the Five-cylinder engine see). 2. To turn away twelve nuts of fastening and to uncover 11 heads of the block, thus a lining not to remove. 3. To establish the piston of 1st cylinder in century of m. т. A compression step (both valves are closed). The label on a pulley of a cranked shaft should coincide with a ledge on the case of the oil pump, as is shown in drawing (or with a label the cover 3 – is see by fig. the Five-cylinder engine). 4. The label on a camshaft cogwheel should be combined with the top plane of a lining of a cover of a head of the block. Бегунок the ignition distributor should be directed towards contact of 1st cylinder. 5. To weaken bolts of fastening of the water pump 22 (fig. the Five-cylinder engine see), to turn the pump to the block of cylinders, to weaken a tension of a belt 1. 6. To remove a belt 1 from a cogwheel 5 camshafts 7. To turn away a bolt of fastening of a cogwheel 5 and to remove a wheel from a camshaft. To take out шпонку 7. 8. To turn on and remove a rack of fastening of a cover 2 to a head 6 blocks. 9. To turn out a bolt of fastening of a back cover 4 to a block head. 10. To turn off bolts of fastening of a head of the block of cylinders, preliminary in regular intervals having released them in an order, the return shown on drawing the Order of an inhaling of bolts of fastening of a head of the block of cylinders. 11. To wring out a cover 4, to deduce from under it a camshaft. To remove a head of the block of cylinders. 12. To remove a lining of 18 heads of the block of cylinders (fig. the Five-cylinder engine see) 13. To establish a block head upside-down. Thus to replace a lining of 18 heads of the block. A new lining to lay on the block of cylinders an inscription "TOP" upwards, without using hermetic. To tighten bolts of fastening of a head of the block in the sequence shown in drawing the Order of an inhaling of bolts of fastening of a head of the block of cylinders, in three stages: 1st stage – 40 Н·м (4,0 кгс·м); 2nd stage – 60 Н·м (6,0 кгс·м); 3rd stage – to tighten further on a half-turn (180 °). To tighten a bolt of fastening of a cogwheel 5 to a camshaft the moment 80 Н·м (8,0 кгс·м). To adjust a tension of a belt of a drive of a camshaft (subsection 3.2.2.2 see).

If necessary, for example for replacement and grinding in of valves, etc., a block head it is possible to remove clearings of chambers of combustion of a deposit, without removing the engine from the car.

The engine on the car

PERFORMANCE ORDER

1. To disconnect a wire from "the minus" plug of the storage battery. 2. To merge a liquid from system of cooling of the engine (subsection 4.1 subitem 1-3 see). 3. To remove facing of a radiator and the top casing of a radiator of system of cooling (subsection 4.6 subitem 7, subsection 11.2 subitem 1-2 see). 4. To remove the air filter (cм. Subsection 6.1.2 subitem 1-6). 5. To remove a generator belt (cм. Subsection 12.1.3.1 subitem 2-5). 6. On the cars equipped with the conditioner, without disconnecting hoses, to remove the compressor and to fix a wire sideways on a body. 7. On cars with the steering amplifier, without disconnecting hoses, to remove the pump of the amplifier and to fix a wire sideways on a body. 8. To disconnect the top hose of a radiator. 9. To mark all fuel and vacuum hoses and to disconnect them from a block head. 10. To uncover the distributor of ignition with wires of a high voltage and the holder of wires. 11. On models with вспрыском fuel to weaken an inhaling of a collar and to disconnect an air line 12 (fig. Basic elements of system of injection of fuel see) from the case throttle заслонки. To disconnect wires from the gauge of position throttle заслонки. 12. To disconnect a cable of an accelerator and if is, the cruise-control mechanism. 13. To disconnect a wire of "weight" from a block head. 14. To disconnect a reception pipe of the muffler. 15. Further an order of removal of a head of the block same, as on the engine which has been removed from the car (subsection 3.2.2 subitem 1-12 see). 16. To establish a block head upside-down (subsection 3.2.2 subitem 13 see).