2.3.6. Hydraulic pushers

The prevention Hydraulic pushers demand care, at non-observance of rules of the reference with them it is possible to damage the engine.

These rules the following:

- At storage of their pushers it is necessary to establish end faces downwards;

- To replace a pusher follows always in gathering as they are not calculated on dismantling or repair;

- Knock of valves at engine start-up is the normal phenomenon. However if this knock seems too loud pushers can be checked up as follows:

1) to start up engine, to wait, while the fan will join;

2) to increase frequency of rotation within approximately two minutes to 2500 mines-1;

3) if pushers still continue to work with noise it is possible to define a faulty pusher for what to dismantle a cover of a head of the block of cylinders and to turn a cranked shaft until when the cam of a camshaft of a controllable pusher will look upwards;

4) to wring out a cam downwards a wooden or plastic wedge, as is shown in fig. 54. If the free wheeling of a pusher before valve opening exceeds 0,10 mm, it is necessary to replace a pusher.

Fig. 54. Check of a hydraulic pusher