Ford Sierra

4.2.2. Check and adjustment of backlashes of valves

THE GENERAL DATA

Arrangement of valves

ADM – inlet the valve, ЕСН – final the valve

The backlash of valves should be checked and, in case of need, to regulate on the cold engine after its finding in the switched off condition about four hours. It is recommended to carry out these procedures each 20 000 km of run of the car, however, not less often, than time in two years.

PERFORMANCE ORDER

1. To disconnect a wire of weight from the accumulator. 2. To remove the air filter. 3. To unscrew four nuts of fastening of a cover of a head of the block of cylinders and to uncover. 4. To adjust a backlash of valves in the sequence resulted in the table, after turn of a cranked shaft so that final the valve were one after another as much as possible open. The prevention The working backlash of valves (measured on the cold engine) makes: 0,30 mm for the inlet valve and 0,35 mm for the final valve. 5. For adjustment of a backlash of the valve it is necessary to weaken a counternut of a regulating bolt of the corresponding lever of the valve, holding with a screw-driver an adjusting bolt, and then to turn an adjusting bolt while the plate щупа will densely not enter a corresponding thickness between the end of the lever and a head of a core of the valve. In this position it is necessary to tighten a counternut of an adjusting bolt, holding this bolt with a screw-driver. 6. To establish a cover of a head of the block of cylinders and the air filter. 7. To connect to the accumulator a weight wire.

Sequence of adjustment of a backlash of valves

The maximum opening of the final valve	Adjustment of a backlash of the inlet valve	Adjustment of a backlash of the final valve
1st cylinder	3rd cylinder	4th cylinder
3rd cylinder	4th cylinder	2nd cylinder
4th cylinder	2nd cylinder	1st cylinder
2nd cylinder	1st cylinder	3rd cylinder

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The prevention

The first cylinder is from outside a flywheel.

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