Mercury 40 Service Manual page 554

BIGFOOT GEAR HOUSING
10. Install locating disc against bearing carrier shoulder in gear housing.
11. Position access hole as shown.
a -
b -
12. Determine pinion gear depth by inserting a feeler gauge thru access hole in locating
disc.
13. The correct clearance between gauging block and pinion gear is 0.025 in. (0.64 mm).
14. If clearance is correct, leave Bearing Preload Tool on driveshaft and proceed to "Deter-
mining Forward Gear Backlash," following.
15. If clearance is incorrect, add (or subtract) shims from above bearing race to lower (or
raise) pinion gear. When reinstalling pinion nut, apply Loctite 271 on threads of nut.
a -
b -
c -
d -
Page 6B-48
b
a
Locating Disc
Access Hole
d
b
7
Loctite "271" (92-809819)
7
Feeler Gauge
Gauging Block
Pinion Gear
Bearing Race
24643
c
Disc 3
a
24643
90-828631R3 MARCH 1999