Yamaha F150A, Service Manual

Page: 422 / 493

9-35
PTT unit
Checking the hydraulic pressure
Check the hydraulic pressure. Check the
internal parts if out of specification.
1. Place the PTT unit in an upright position.
2. Connect the battery jumper leads to the
PTT motor lead “1” to fully extend the
PTT rams.
3. Remove the reservoir cap “1”, and then
check the fluid level in the reservoir.
Before removing the reservoir cap “1”,
make sure that the PTT rams are fully
extended. Otherwise, fluid could be
expelled forcefully from the PTT unit due
to internal pressure.
TIP:
If the fluid is at the proper level, a small
amount of fluid should flow out of the filler
hole.
4. If the fluid is below the proper level, add
the recommended fluid.
5. Install the reservoir cap, and then tighten
it to the specified torque.
6. Remove the main valve “1”.
Be careful when removing the main valve.
Fluid could be expelled forcefully from the
PTT unit due to internal pressure.
7. Install the special service tools “1” and
“2”.
TIP:
Install the special service tools quickly before
any fluid flows out of the hole.
Ram PTT motor lead Battery
Extend
Blue (L) (+)
Green (G) (–)
L
G
1
1
Recommended PTT fluid: ATF Dexron II
Reservoir cap:
7 N·m (0.7 kgf·m, 5.2 ft·lb)
PTT hydraulic gauge adapter “1”:
90890-06863
Hydraulic pressure gauge “2”:
90890-06776/06800
1
1
2