SELVA MARINE Kingfish 25, Service Manual

Page: 364 / 398

9-74
9
Disassembling the PTT cylinder
1. Loosen the tilt cylinder end screw
a
, and
then remove the tilt ram assembly
1
.
2. Drain the PTT fluid.
3. Cover the PTT cylinder opening with a
rag
3
, and then blow compressed air
through the hole
b
to remove the free
piston
4
. WARNING! Never look into
the PTT cylinder opening while
removing the free piston because the
free piston and PTT fluid could be
forcefully expelled out.
4. Remove the tilt piston
c
and tilt cylinder
end screw
a
.
5. Remove the absorber valves
d
.
Checking the PTT cylinder and
piston
1. Check the tilt piston
a
and free piston
1
. Replace if cracked or scratched.
2. Check the tilt cylinder end screw
b
and
cylinder
2
. Replace if cracked or
scratched.
3. Check the tilt ram
c
. Polish with 400–
600 grit sandpaper if there is rust, or
replace if bent or corroded.
4. Check the absorber valves
d
. Clean if
there is dirt or residue.
Cylinder-end screw wrench
2
:
90890-06568
1
a
2
3
4
b
a
c
d
PTT cylinder