Mariner 30 JET 40 (4 CYL), Service Manual

Page: 389 / 532

90-814676R1 DECEMBER 1996 MID-SECTION - 5G-5
Tilt Up
With the engine in the down position, the accumula-
tor piston (d) will be at the top of the accumulator (c)
with the gas at maximum pressure. To raise the en-
gine, the camshaft lever (f) is rotated all the way
down. The internal shaft connected to the camshaft
lever will move the push rods, opening the accumula-
tor check valve (e), both fast transfer valves (h & j)
and the down slow transfer valve (i). As the operator
lifts the engine; oil, under pressure inside the accu-
mulator, will flow around both the slow transfer valve
(i) and the down circuit fast transfer valve (h). Oil
flows into the bottom of the tilt cylinder forcing the
memory piston (m) into the shock piston (n) and then
forcing the shock rod (a) up and out. Oil above the
shock piston exits the cylinder (l) through an intercon-
necting passage along side of the cylinder and re-
turns into the manifold (g). Inside the manifold the oil
flows past the groove in the surge valve (k), through
the transfer valve (j) and mixes with the oil flowing
from the accumulator into the up cavity. With the en-
gine in the correct position, the camshaft lever (f) is
rotated up and the push rods allow the check valves
(e, h, i, & j) to close. The closed check valves prevent
the oil from traveling between cavities and locks the
engine into position.