Yamaha F150A - Page 425

9-38
PTT unit
0
1
2
3
4
5
6
7
8
9
10
A
3. Check the fluid level. See steps 2–4 in
“Checking the hydraulic pressure” (9-35).
4. Connect the battery jumper leads to the
PTT motor lead “1” to fully retract the
PTT rams.
TIP:
If the PTT rams do not move down easily,
push on the PTT rams to assist operation.
5. Reverse the connection between battery
jumper leads and the PTT motor lead “1”
to fully extend the PTT rams.
TIP:
If the PTT rams do not move down easily, pull
on the PTT rams to assist operation.
6. Repeat steps 4 and 5 to fully extend and
retract the PTT rams 4 or 5 times.
7. Fully extend the tilt ram.
8. Remove the reservoir cap, and then
check the fluid level in the reservoir.
Before removing the reservoir cap, make
sure that the PTT rams are fully extended.
Otherwise, fluid could be expelled force-
fully from the PTT unit due to internal
pressure.
TIP:
If the fluid is below the proper level, add the
recommended PTT fluid. Repeat steps 3–7
until the fluid remains at the proper level.
9. Install a new O-ring and the reservoir
cap, and then tighten the reservoir cap to
the specified torque.
Manual valve “1”:
3 N·m (0.3 kgf·m, 2.2 ft·lb)
Ram PTT motor lead Battery
Retract
Green (G) (+)
Blue (L) (–)
1
LG
1
Ram PTT motor lead Battery
Extend
Blue (L) (+)
Green (G) (–)
Reservoir cap:
7 N·m (0.7 kgf·m, 5.2 ft·lb)
L
G
1