2.2.2. Check of gaps in the mechanism of the drive of valves on engines M 102.980 and M 102.982
Principle of hydraulic compensation of a gap of valves
On engines M 102.980 and M 102.982 valvate yokes have hydraulic pushers.
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1 — the accumulative camera |
5 — a returnable spring of the ball valve |
In accumulative 1 and the worker 2 cameras come to operating time of the engine oil under low pressure (no more than 3 kg/cm 2). Thereby the continuous contact of a pusher 3 with a valve core is provided. When raising a yoke the 4th cam the pusher enters in a yoke, the ball valve is closed that causes increase in pressure in the working camera. Owing to incompressibility of oil transfer to a pusher and the valve of the movement from a cam and a yoke is provided. The spring 5 provides the constant pressure of a pusher upon valves and at the stopped engine.
Check
If there are doubts in malfunction of pushers (knock, deterioration in operation of the engine), check their state.
PERFORMANCE ORDER |
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