90-826148R2 MARCH 1997 MID-SECTION - 5B-11
TILT UP
In the up mode, as the trim rod (b) extends from the
cylinder, the memory piston (e) clears or uncovers
the pressure relief passage. Oil from the up cavity
will enter this passage and open the tilt pressure re-
lief valve (k). This valve lowers the amount of pres-
sure available to lift the outboard motor. With the en-
gine in forward gear, and at high engine rpm, the oil
pressure available will not be able to overcome the
propeller thrust, limiting the trim range to below the
pressure relief orifice. When the engine rpm’s fall or
if engine is not in forward gear, the oil pressure is
available to extend the trim ram (b) up into the tilt
range.
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