SELVA MARINE Blue Whale 250 EFI, Service Manual

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6P23H11
7-24
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Checking the hydraulic pressure
1. Check the hydraulic pressure. Check the
internal parts if out of specification.
2. Fully extend the PTT rams.
3. Loosen the pipe joints
1
, and then
remove the pipe joint at end
a
.
4. Install the special service tools.
NOTE:
Put the PTT unit in the drain pan.
5. Connect the PTT motor leads to the bat-
tery terminals to retract the trim rams,
and then measure the hydraulic pres-
sure.
6. Reverse the PTT motor leads between
the battery terminals to fully extend the
rams.
7. Remove the special service tools.
8. Install the pipe joints
1
, and then tight-
ening them to the specified torque.
9. Connect the PTT motor leads to the bat-
tery terminals to fully retract the trim and
tilt rams.
PTT oil pressure gauge assembly
2
:
90890-06580
Ram PTT motor lead
Battery
terminal
Down
Light green (Lg)
+
Sky blue (Sb)
-
Hydraulic pressure (down):
6.7 – 8.7 MPa (68 – 89 kgf/cm
2
)
Ram PTT motor lead
Battery
terminal
Up
Sky blue (Sb)
+
Light green (Lg)
-
T
R
.
.
Pipe joint
1
:
15 N · m (1.5 kgf · m, 11.1 ft · lb)
PTT unit