Power Trim and Tilt: 2B-5
Shock Absorber Circuit
Shock valve
Should the lower unit strike an underwater object while in motion, the piston will rise abruptly, creating a sudden high
impact pressure in the upper cylinder chamber (1). The shock valve (2) will then open, allowing oil to flow into the area
between the tilt ram piston (3) and the free piston (4), thereby dampening (absorbing) the impact.
Return valve
When the point of impact has passed, propeller thrust and motor weight will force the tilt ram piston back downward.
The oil from between the ram piston (3) and the free piston (4) is then expelled through the return valve (5) before
flowing into the upper cylinder chamber (1).
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