Yamaha F150 Manuale di Servizio Scaricare il pdf (Pagina 239)

63P3F11

7-30

13. Connect the PTT motor leads to the bat-

tery terminals to fully retract the trim and

tilt rams, and then measure the hydraulic

pressure. If out of specification, overhaul

the power trim and tilt unit.

14. Reverse the PTT motor leads between

the battery terminals to fully extend the

trim and tilt rams.

15. Remove the special service tools, and

then install the manual valve and circlip.

NOTE:

Quickly install the manual valve before any

fluid flows out of the hole.

Disassembling the power trim and

tilt motor

1. Remove the power trim and tilt motor, O-

ring, gear pump filter, and joint from the

gear pump housing.

CAUTION:

• Make sure that the trim and tilt rams are

fully extended when removing the power

trim and tilt motor, otherwise fluid can

spurt out from the unit due to internal

pressure.

• Do not push the trim and tilt rams down

while the power trim and tilt motor is

removed from the power trim and tilt

unit, otherwise fluid can spurt out.

2. Check the gear pump filter for dirt or resi-

due and for damage. Clean or replace if

necessary.

Rams PTT motor lead

Battery

terminal

Down

Light green (Lg)

Sky blue (Sb)

Hydraulic pressure (down):

6–9 MPa (60–90 kgf/cm

)

Rams PTT motor lead

Battery

terminal

Sky blue (Sb)

Light green (Lg)

Manual valve:

3 N·m (0.3 kgf·m, 2.2 ft·lb)

S60X7220

Power trim and tilt unit

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Yamaha F150 Manuale di Servizio Pagina 239

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