8-31
LOWR
Lower unit
20. Check that the reverse gear backlash
average is within specification.
TIP:
Adjust the shim thicknesses if the reverse
gear backlash is out of specification.
21. Remove the special service tools, and
then install the water pump assembly.
See “Installing the water pump” (8-22).
Shimming
• Make sure to select the pinion shim(s) (T3)
before selecting the forward gear shim(s)
(T1) and reverse gear shim(s) (T2).
• When assembling the lower unit to mea-
sure the backlash after selecting the pinion
shim(s) (T3), do not apply gear oil, grease,
or sealant to the parts.
• When assembling the lower unit after shim-
ming is completed, make sure to apply gear
oil, grease, and sealant to the specified
areas.
Reverse gear backlash:
0.33–0.74 mm (0.0130–0.0291 in)
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