Mercury 225 EFI Service Manual page 548

UPPER DRIVESHAFT BEARING CLEARANCE
1. When the correct pinion gear height is achieved, remove pinion nut, upper retainer
and driveshaft.
2. Apply Premium Gear Lubricant to O.D. of the driveshaft lower bearing cup and install
cup into the gear case.
3. Reinstall driveshaft and pinion gear into gear case.
4. Install the upper drive shaft bearing cup and install and torque the upper bearing re-
tainer to 100 lb. ft. (135 Nm).
5. Torque pinion nut to 70 lb. ft. (95 Nm).
a -
6. Push down on drive shaft and check clearance between pinion gear and pinion gear
shimming tool shoulder. Clearance should be 0.020 in - 0.024 in. (0.51 mm - 0.61 mm).
a -
b -
NOTE: Do not change shims under upper bearing cup or pinion height will be changed.
7. Maintain the shims as previously set under the upper drive shaft bearing cup.
8. If clearance is not within specifications, remove the upper bearing cup retainer with
tool 91-43506 and remove cup. Leave upper cup shim(s) in place.
NOTE: A 0.001 in. (25.4 mm) change of shims under the lower bearing cup will result in
a 0.001 in. (25.4 mm) change in drive shaft end play.
90-884294 OCTOBER 2001
Bearing Retainer Tool (91-43506)
Pinion Gear Shimming Tool (91-12349A2) Using Disc #2
and Flat #4
Feeler Gauge
RIGHT HAND NON-RATCHETING
a
b
a
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