Trim/Tilt "Down" Circuit - BRP Johnson J30TEL4SUA 2007 Service Manual

POWER TRIM AND TILT
OPERATION

Trim/Tilt "DOWN" Circuit

The electric motor is operating in a counterclockwise 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
right, opening the "up" pressure main check valve. Oil from the lower cylinder chamber will go through
the "up" pressure main check valve to the pump.
Pressure built up by the pump will open the "down" pressure main check valve and oil will enter the
upper cylinder chamber. The piston will retract (move inward), which will tilt the outboard down. Oil in the
lower cylinder chamber is returned to the pump through the "up" pressure main check valve.
When full "down" position is reached, continued operation of the "down" relay will have no effect, as
pump oil flow will be returned to the reservoir through the "down" relief valve.
10
001943
239