SELVA MARINE Kingfish 25, Руководство по обслуживанию

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LOWR
Lower unit
8-55
Measuring the forward and reverse
gear backlash before disassembly
1. Remove the water pump assembly and
outer plate cartridge. See “Removing the
water pump” (8-37).
2. Set the gear shift to the N position.
3. Install the special service tools, See
steps 3–7 in “Measuring the forward and
reverse gear backlash” (8-28).
4. Install the special service tool 1 at the
lowest possible position where the shaft
diameter is 16 mm (0.63 in).
5. Install the handle stopper 2 so that it is
resting on the step
a
on the drive shaft,
and then tighten the nuts
b
to the speci-
fied torque.
6. Install the special service tools, See
steps 11 and 12 in “Measuring the for-
ward and reverse gear backlash” (8-28).
7. Turn the drive shaft 180° clockwise and
measure the backlash again.
TIP:
• Measure the backlash at 4 points:
c
,
d
,
e
, and
f
, turning the drive shaft 180°
clockwise after each measurement. Note
the measurement data in the shimming
check sheet.
• When turning the drive shaft, hold it with a
little force. A knocking sound may be heard
when the drive shaft is rotated, but this is
the sound of the pinion contacting the
reverse gear and does not affect the back-
lash measurement.
8. Determine the backlash average, and
then round down the average to the
1/100 place.
Example:
9. Check that the forward gear backlash
average is within specification.
Backlash indicator
1
: 90890-06706
Handle stopper
2
: EU0-23814-30
Handle stopper nut
b
(shimming):
2 N·m (0.2 kgf·m, 1.5 ft·lb)
F
N
R
b
2
a
b
1
(mm)
Measuring point
c
0.36
Measuring point
d
0.38
Measuring point
e
0.40
Measuring point
f
0.39
Average 0.3825
Round-down average (BL1) 0.38
Forward gear backlash:
0.22–0.69 mm (0.0087–0.0272 in)
c
d
e
f