Yamaha F200B, Руководство по обслуживанию

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LOWR
Lower unit
8-51
4. Install the pinion shims, drive shaft, pin-
ion, and oil seal housing. See steps 2–5
in “Installing the drive shaft” (8-28).
(F200B) See steps 2 and 3 in “Installing
the drive shaft” (8-35) and steps 4 and 5
in “Installing the drive shaft” (8-28).
(F250G)
5. Check that the drive shaft turns
smoothly.
6. Install the propeller shaft assembly (with-
out the dog clutch) and propeller shaft
housing assembly (without the O-ring).
See steps 2–4 in “Installing the propeller
shaft housing assembly” (8-29). (F200B)
See steps 2–4 in “Installing the propeller
shaft housing assembly” (8-35). (F250G)
TIP:
When assembling the lower unit to measure
the backlash, do not install the dog clutch
and O-ring.
7. Check that the drive shaft turns
smoothly.
8. Measure the forward gear backlash. See
steps 2–15 in “Measuring the forward
gear backlash and reverse gear backlash
before disassembly” (8-40).
TIP:
In the “Forward gear shim (T1) selection
chart,” use the round-down average for the
backlash measurement (BL1).
Adjusting the forward gear shim (T1)
thickness
1. Remove the propeller shaft housing
assembly and propeller shaft assembly.
See “Removing the propeller shaft hous-
ing assembly” (8-16). (F200B) See
“Removing the propeller shaft housing
assembly” (8-22). (F250G)
2. Remove the oil seal housing, pinion,
drive shaft, and forward gear assembly.
See “Removing the drive shaft” (8-25).
(F200B) See step 1 in “Removing the
drive shaft” (8-25) and steps 2 and 3 in
“Removing the drive shaft” (8-35).
(F250G)
3. Remove the taper roller bearing outer
race. See step 2 in “Disassembling the
lower case” (8-25).
4. Measure the thickness of each original
forward gear shim in 2 places.
TIP:
Do not reuse a shim if deformed or
scratched.
5. Determine the forward gear shim (T1)
thickness adjustment using the “Forward
gear shim (T1) selection chart” according
to the backlash measurement (BL1) from
“Measuring the forward gear backlash.”
See “Forward gear shim (T1) selection
chart” (8-53).
Example:
Backlash measurement (BL1) = 0.15 mm
a
Forward gear shim (T1) thickness adjustment
= –0.22 mm
b
The current shim thickness must be
decreased by 0.22 mm.
È
Backlash measurement (BL1)
É
Shim thickness adjustment
Forward gear backlash:
0.26–0.65 mm (0.0102–0.0256 in)
–0.32 –0.28 –0.25 –0.22 –0.18 –0.
0 5 10 15 20 2
0
–0.20
–0.40
0 5 10 15 20 2
È
É
É
(mm)
È
(1/100 mm)
a
b