Ptt Unit; Checking The Hydraulic Pressure - SELVA MARINE Blue Whale 250 EFI Service Manual

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.
PTT oil pressure gauge assembly 2:
90890-06580
5. Connect the PTT motor leads to the bat-
tery terminals to retract the trim rams,
and then measure the hydraulic pres-
sure.
6P23H11
Ram PTT motor lead
Light green (Lg)
Down
Sky blue (Sb)
Hydraulic pressure (down):
6.7–8.7 MPa (68–89 kgf/cm
6. Reverse the PTT motor leads between
the battery terminals to fully extend the
rams.
Ram PTT motor lead
Sky blue (Sb)
Up
Light green (Lg)
7. Remove the special service tools.
8. Install the pipe joints 1, and then tight-
ening them to the specified torque.
Pipe joint 1:
15 N·m (1.5 kgf·m, 11.1 ft·lb)
9. Connect the PTT motor leads to the bat-
tery terminals to fully retract the trim and
tilt rams.

PTT unit

Battery
terminal
+
1
-
2
)
2
3
4
5
Battery
6
terminal
+
-
7
8
9
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