Selecting The Pinion Shim; Selecting The Forward Gear Shim - SELVA MARINE Wahoo 15 Service Manual

LOWR
Shimming
NOTE:
• Shimming is not required when assembling
the original lower case and inner parts.
• Shimming is required when assembling the
original inner parts and a new lower case.
• Shimming is required when replacing the
inner part(s).

Selecting the pinion shim

1. Measure the thickness (M1) of the thrust
bearing.
NOTE:
• Select the shim thickness (T3) by using the
specified measurement(s) and the calcula-
tion formula.
• Measure the thrust bearing at 4 points to
find the thickness average.
Digital caliper 1: 90890-06704
2. Calculate the pinion shim thickness.
Calculation formula:
Pinion shim thickness (T3) =
6.05 – M1
3. Select the pinion shim(s) (T3) as follows.
6-21
Lower unit
1
M1
S6AG6460
6
Calculated number
1.14–1.20
1.21–1.30
Available shim thicknesses:
1.13 and 1.20 mm

Selecting the forward gear shim

1. Turn the taper roller bearing outer race
6
1 2 or 3 times to seat the rollers, and
then measure the bearing height (M2) as
shown.
NOTE:
• Select the shim thickness (T1) by using the
specified measurement(s) and the calcula-
tion formula.
• Measure the bearing outer race at 4 points
to find the height average.
Digital caliper 2: 90890-06704
Shimming plate 3: 90890-06701
2. Calculate the forward gear shim thick-
ness.
Calculation formula:
Forward gear shim thickness (T1) =
16.60 – M2
3. Select the forward gear shim(s) (T1) as
follows.
Shim thickness
(mm)
1.13
1.20
2
1
3
S6AG6470J
6AG3J11
6
M2