Mercury 25 EFI Service Manual page 398

Power Trim
5. Install the trim piston assembly into the inner cylinder tube.
a - Chamfered end of the inner cylinder tube
b - Trim piston O‑ring
c - Trim piston
6. Install a new lubricated O‑ring and backup seal on the memory piston.
7. Install the memory piston into the inner cylinder tube.
8. Install the piston rod assembly and inner cylinder tube into the outer cylinder tube.
a
a - Inner cylinder tube
b - Outer cylinder tube
c - Trim piston rod assembly
IMPORTANT: Place the trim cylinder rod in a soft jawed vice. Scratching of the trim cylinder rod will result in external
cylinder leakage.
9. Place the trim cylinder rod in a soft jaw vice to install the rod eye and jam nut.
Page 5B-36
a
a
© 2016 Mercury Marine
b
c
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a - Chamfered end of the inner
b
cylinder tube
c
b - Backup ring
c - O‑ring
d - Trim piston
d
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b
90-8M0105568 eng MARCH 2016
c
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