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9-43

PTT cylinder

Removing the tilt ram and trim ram

Before removing the tilt cylinder end

screw, make sure that the PTT rams are

fully extended. Otherwise, fluid could be

expelled forcefully from the PTT unit due

to internal pressure.

1. Connect the battery jumper leads to the

PTT motor lead “1” to fully extend the

PTT rams.

2. Open the manual valve “1”.

3. Loosen the tilt cylinder end screw “1”,

and then remove the tilt ram assembly.

4. Tighten the manual valve “1” to the spec-

ified torque.

5. Connect the battery jumper leads to the

PTT motor lead “1”, and then remove the

free piston “2”.

When removing the free piston, never

look into the tilt cylinder opening. Other-

wise, fluid could be expelled forcefully

from the PTT unit due to internal pres-

sure.

6. Loosen the trim cylinder end screws “1”,

and then remove the trim ram assem-

blies.

Ram PTT motor lead Battery

Extend

Blue (L) (+)

Green (G) (–)

Cylinder end screw wrench “2”:

90890-06591

Manual valve “1”:

3 N·m (0.3 kgf·m, 2.2 ft·lb)

PTT motor lead Battery

Blue (L) (+)

Green (G) (–)

Yamaha F150A Service Manual

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