61U5H11
6-26
9
8
7
6
5
4
3
2
1
Shimming/Backlash
NOTE:
9
Without the O-ring, when measuring the
reverse gear height.
9
Select the shim thickness (T2) by using the
specified measurement(s) and the calcula-
tion formula.
9
Measure the reverse gear at 4 points to find
the height average.
9
Make of note the each measurement
numerical.
3.
Calculate the reverse gear shim thick-
ness (T2) as shown in the examples
below.
NOTE:
“R” is the deviation of the lower case dimen-
sion from standard. The “R” mark
a
is
stamped on the trim tab mounting surface of
the lower case in 0.01 mm units. If the “R”
mark
a
is unreadable, assume that “R” is
zero and check the backlash when the unit is
assembled.
Example:
If “M2” is 28.25 mm and “R” is (– 1), then
T2 = 28.25 – 27.4 – (– 1)/100 mm
= 28.25 – 27.4 + 0.01 mm
= 1.36 mm
4.
Select the reverse gear shim(s) (T2) as
follows.
Example:
If “T2” is 1.30 mm, then the reverse gear shim
is 1.30 mm.
If “T2” is 1.36 mm, then the reverse gear shim
is 1.38 mm.
Backlash
Measuring the forward and reverse
gear backlash
1.
Remove the water pump assembly.
2.
Set the gear shift to the neutral position
at the lower unit.
Available shim thicknesses:
0.10, 0.12, 0.15, 0.18, 0.30, 0.40 and
0.50 mm
69D60035
Shift rod push arm:
90890-06052
Shimming plate
1
: 90890-06701
Digital caliper
2
: 90890-06704
Calculation formula:
Reverse gear shim thickness (T2) =
M2 – 27.4 – R/100
Calculated numeral
Rounded numeral
at 1/100th place
1, 2
2
3, 4, 5
5
6, 7, 8
8
9, 10
10
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