Trim Tilt "Up" Circuit - BRP Johnson J30TEL4SUA 2007 Service Manual

POWER TRIM AND TILT
OPERATION

Trim Tilt "UP" Circuit

The electric motor is operating in a clockwise direction. Check valve "A" will open, allowing oil to flow
from the reservoir to the pump. Oil flow from the pump enters the spool valve and moves it to the left,
opening the "down" pressure main check valve and returning oil from the upper cylinder chamber (and
oil from the reservoir) to the pump. Pressure built up by the pump will then open the "up" pressure main
check valve and oil will enter the lower cylinder chamber.
When the trim motor stops, both the "down" pressure main check valve and the "up" pressure main
check valve will close to retain tilt/trim position.
When full trim/tilt "up" position is attained, sustained operation of the "up" relay will have no effect, as
pump oil flow will be returned to the reservoir through the "up" relief valve.
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