Yamaha F225F Service Manual page 528

BRKT
4. Check the main valves f and g. Clean
if there is dirt or residue.
a
b
f
e
Assembling the gear pump assembly
Lubricate the parts using ATF DEXRON II
during assembly.
• When assembling the PTT unit, do not
use a rag. Otherwise, dust and particles
could get on the PTT unit components,
causing poor performance.
• Do not reuse an O-ring or valve seal,
always replace it with a new one.
1. Install a new O-ring a to the down-main
valve b.
2. Install the drive gear a, driven gear b,
down-main valve b, up-main valve c,
springs d, and pins e.
3. Install the balls f and the gear housing
c.
9-49
Bracket unit
c
d
g
e
d
b
a
b
f
4. Install the balls g, the valve pins h, the
springs i, the spacers j, and new O-
rings k.
5. Install the balls l and manual release
plate m.
6. Install the bracket n, and then tighten
the pump bracket bolts o temporarily.
7. Check that the
smoothly, and then tighten the pump
bracket bolts o to the specified torque.
o
n
k
j
i
h
g
Pump bracket bolt o:
7 N·m (0.7 kgf·m, 5.2 ft·lb)
8. Install a new valve seal p, the valve pin
q, and the spring r, and then install the
valve lock screw s.
9. Install a new O-ring t to the valve
support pin u.
c
e
d
c
a
gear pump turns
k
j
i
h
g
l
m