Tilt Down Operation - SELVA MARINE Kingfish 25 Service Manual

TECH
FEA

Tilt down operation

When the down side of the PTT switch is pushed, fluid pressure created by the gear pump 2
causes PTT fluid to flow into the down side of the shuttle piston c and pushes the down valve b,
causing it to open. At this point, the fluid pressure forces the shuttle piston c to slide to the up valve
a. The protrusion on the shuttle piston c opens the up valve a, which opens the return passage.
Then, the PTT fluid flows into the upper chamber of the cylinder to force the tilt ram assembly A to
move down.
The relief valve 4 of the fluid pressure passage will open when the fluid pressure is more than the
limit. The down-relief valve opens at 2.0 MPa (20.0 kgf/cm
h Fluid pressure passage
k Return passage
m Relief passage
2-17
Technical features and description
2
b
4
2
, 290.0 psi).
a
c
A
h
k
m