MANUAL TILT ASSIST
90-857046R1 NOVEMBER 2001 Page 5C-13
Shock Function (Valves Closed)
Should the drive unit strike a submerged object while in forward motion, the shock rod (a)
will extend from the cylinder (l). Oil inside the up cavity is locked in a static position by the
closed up circuit fast transfer valve (j), the closed down circuit slow transfer valve (i) and
closed down circuit fast transfer valve (h). Fluid will attempt to exit the cylinder through the
interconnecting passage back into the accumulator (c). The closed up circuit fast transfer
valve (j) will prevent the fluid return. As the shock rod extends outward, the pressure inside
the up cavity will reach sufficient pressure to open the shock valve (p) which opens at
880-1110 PSI. Oil will flow into the cavity created as the shock rod & shock piston (n) moves
away from the memory piston (m).
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