Ford Sierra

3.1.4.4.8. A head of the block of cylinders of the engine

THE GENERAL DATA

Knot of a head of the block of cylinders of engine DOHC

1 – a head of the block of cylinders, 2 – a lining of a head of the block of cylinders, 3 – covers of bearings of cam-shafts, 4 – the pipeline of giving of oil, 5 – a cover of a head of the block of cylinders, 6 – a lining of a cover of a head of the block of cylinders

Removal of a head of the block of cylinders

PERFORMANCE ORDER

1. To disconnect from the accumulator a weight wire. 2. To remove the air filter together with its pipelines. 3. To merge system of cooling by bolt unscrewing in the bottom right part of a radiator. 4. To disconnect from a radiator the top elastic pipeline, the pipeline from a broad tank and the pipeline from the thermostat. 5. To disconnect the elastic pipeline of heating of salon of the car from a head of the block of cylinders. 6. To disconnect the pipeline of removal of air from a cover of a head of the block of cylinders. 7. To disconnect a pedal cable акселератораа. In the carburettor engine to unscrew a cable throttle заслонки together with the holder, and in the engine with fuel injection to disconnect draught from the case throttle заслонки after extraction from outside a clip from an artificial material. 8. In engines with fuel injection to disconnect from an inlet collector the vacuum pipeline. 9. In engines with fuel injection to disconnect the pipeline of giving of fuel to a regulator of pressure and to atomizers. 10. To disconnect a wire of a high voltage from the ignition coil. 11. To unscrew a nut of the top fastening of a forward exhaust pipe to a final collector. 12. To lift the car. 13. To unscrew two other nuts of fastening of a forward exhaust pipe to a final collector. 14. To lower the car. 15. To unscrew wires of a high voltage from свеч ignitions and to uncover the ignition distributor (key Torx T25). 16. To unscrew spark plugs. 17. To take the ignition distributor. 18. To uncover heads of the block of cylinders (11 bolts and 4 nuts). 19. To remove the top casing propeller system chains timing. 20. To unscrew two bolts Torx of fastening of asterisks of cam-shafts. 21. To establish the piston of 1st cylinder in ВМТ. 22. Will designate чертилкой interposition of a tooth of an asterisk and взаимодейтсвующей with it chains. 23. To remove top directing to a chain. 24. To remove a lock ring of an axis of the tension device and the tension device of a chain (fig. Installation timing engine DOHC see). 25. To take an axis of the tension device of a chain by means of bolt М6x70 and plugs in length of 15 mm. 26. To remove the tension device of a chain. 27. To remove asterisks from both cam-shafts. 28. To take a hydraulic pusher of the tension device. 29. To remove covers of bearings of cam-shafts, gradually alternately unscrewing covers of bearings and the pipeline of giving of oil. The prevention Covers of bearings are designated at factory that in the course of assemblage were established on corresponding places. 30. To take cam-shafts. 31. To take hydraulic pushers and to designate them so that at assemblage they were established on the places. 32. To weaken on a half-turn bolts of fastening of a head of the block of cylinders in sequence of return to process of their tightening (fig. Sequence of a tightening of bolts of a head of the block of cylinders of engine DOHC see), and then to unscrew bolts of fastening of a head of the block of cylinders. The prevention Bolts cannot be used again for fastening of a head of the block of cylinders. 33. To remove a head of the block of cylinders together with inlet and final collectors. After removal from the block of cylinders of a head it is impossible to lay down it on the bottom surface.

Sequence of a tightening of bolts of a head of the block of cylinders of engine DOHC

Bolts М11 – sequence of a tightening: 1 – 10.

Bolts М8 – sequence of a tightening: 11 – 13.

Installation of a head of the block of cylinders

PERFORMANCE ORDER

1. To clear surfaces прилегания linings on a head of the block of cylinders and the block of cylinders of the engine. 2. To establish on the block of cylinders a new lining of a head. 3. For elimination of possibility of damage of valves and pistons follows, rotating a cranked shaft, to establish the piston of 1st cylinder in position about 20 mm more low ВМТ. 4. To establish a head on the block of cylinders of the engine. 5. To screw in a hand bolts in apertures in a head of the block of cylinders (fig. Sequence of a tightening of bolts of a head of the block of cylinders of engine DOHC see). 6. To tighten bolts in the sequence shown on fig. Sequence of a tightening of bolts of a head of the block of cylinders of engine DOHC, in five stages:        – 1st stage (bolts М11 – sequence 1 – 10): 25 Nanometers;        – 2nd stage (bolts М11 – sequence 1 – 10): 55 Nanometers;        – 3rd stage (bolts М11 – sequence 1 – 10): to tighten on 90 °;        – 4th stage (bolts М11 – sequence 1 – 10): to tighten on 90 °;        – 5th stage (bolts М8 – sequence 11 – 13): 24–27 Nanometers. The prevention Two long bolts М8 are screwed in in the apertures designated as (11) and (12), and short bolt М8 – in an aperture (13). 7. To grease with a thin butter layer of a surface of hydraulic pushers and to establish them in corresponding places in nests of a head of the block of cylinders. 8. To grease surfaces of sliding of bearings of a cam-shaft on a head of the block of cylinders and to establish on them cam-shafts so that шпоночные grooves to the forward party have been directed to the right. 9. To put on covers of bearings, paying attention to their designations:        – R1–R5 – covers of bearings of a shaft of inlet valves (R1 – from outside a system drive timing);       – L1–L5 – covers of bearings of a shaft of final valves (L1 – from outside a system drive timing). 10. To insert the pipeline of giving of oil to cams and top directing propeller system chains timing. 11. To tighten the corresponding moment bolts of fastening of covers of bearings of cam-shafts alternately, one after another corresponding to their numbers. 12. To disassemble a hydraulic pusher of the tension device and to merge from it oil. 13. By means of the special adaptation 21.145 to collect the hydraulic pusher of the tension device filled with oil for the engine. For this purpose it is necessary to establish картер a pusher the flat party on a workbench, and on it the plug of the adaptation a cone upwards. To establish the pusher piston on the plug and to compress all together the lever of the adaptation which publishes a characteristic sound after дожатия against the stop (in the lowest position). 14. To arrange in directing a hydraulic pusher of the tension device of a chain. 15. To establish the tension device of a chain and its lock ring. 16. To check up, whether there is a piston of 1st cylinder in ВМТ (the flute шпоночного a groove of a cranked shaft is directed downwards). 17. To put on two asterisks of cam-shafts together with a chain, observing correct interposition according to signs, выполенными in the course of removal of asterisks. 18. To execute some turns cranked shaft in a direction of its working rotation, and then to check up correctness of a relative positioning of shaft and a chain. 19. To establish top directing together with a spring clip of fastening. 20. To establish the top casing propeller system chains timing together with a new lining. 21. To establish a cover of a head of the block of cylinders together with a new lining. 22. To tighten bolts of fastening of a cover of a head of the block of cylinders the corresponding moment, beginning from extreme bolts and finishing on averages. 23. To screw up spark plugs. 24. To establish the ignition distributor, a rotor and a distributor cover. 25. To connect to candles and the coil of ignition of a wire of a high voltage. 26. To screw on a final collector a forward exhaust pipe together with a new lining. 27. To connect wires to engines of fans of a radiator and a plait of wires to the electronic actuation device. 28. In the engine with fuel injection to connect топливопровода to a regulator of pressure and atomizers. 29. To connect vacuum the pipeline. 30. To connect a cable of a pedal of an accelerator. 31. To connect to a cover of a head of the block of cylinders of the pipeline of system of removal of air. 32. To connect to a head of the block of cylinders the elastic pipeline of heating of salon of the car. 33. To connect the top elastic pipeline to a radiator, the pipeline to a broad tank and the thermostat. 34. To establish the air filter. 35. To add quantity of oil in system of greasing of the engine and to fill system of cooling with a corresponding liquid and to remove air from it. 36. To connect to the accumulator a weight wire. 37. To check up adjusting parametres of the engine idling.

Repair grew grey valves and valves

PERFORMANCE ORDER

1. If results of measurements show that after regrinding of a working facet of the valve will correspond to requirements it is possible to repair them in specialised repair shop. In this case it is necessary to order regrinding of corresponding saddles of valves also. 2. To check up a condition of a working facet of valves. 3. To check up a condition of a working facet of saddles of valves. 4. To check up tightness of knot the valve-saddle. 5. Very carefully to clear a head of the block of cylinders after regrinding of saddles and grinding in of valves of particles of an abrasive material and metal sawdust.

Assemblage

PERFORMANCE ORDER

1. To oil cores of valves. 2. To insert the valve in directing in which it worked earlier, to stick flutes on the end of a core of the valve with a sticky tape. 3. To establish the bottom basic plate of springs of valves. 4. To oil a working edge маслосъемного a cap of the valve and to insert it by means of the corresponding assembly plug. 5. To remove a sticky tape. 6. To repeat last four operations for other valves. 7. To establish serially on each valve corresponding springs, the top basic plates of springs and crackers by means of the adaptation for compression of springs of valves. 8. To screw on a head of the block of cylinders final and inlet collectors.