Checking The Tooth Contact Pattern - BRP Johnson J30TEL4SUA 2007 Service Manual

Checking the Tooth Contact
Pattern
Apply a light coat of Gear Mark Compound, P/N
772666, on the convex surface of the forward
gear.
Install the propeller shaft and bearing housing
assembly without the reverse gear and internal
components.
Push the propeller shaft inward and hold it in posi-
tion.
Use a driveshaft holder to rotate the driveshaft five
or six times.
1. Driveshaft holder, P/N 345834
SHIMMING AND GEAR BACKLASH CHECKS
Carefully pull out the propeller shaft and bearing
housing to check the tooth contact pattern.
3
1. Tooth width
2. Toe
3. Heel
4. Tooth contact pattern
Optimum Tooth Contact
A shim adjustment may be necessary to obtain
this contact pattern. After adjusting the shim thick-
ness, check the tooth contact pattern again.
Width of contact area
Top of tooth to contact area
001905
1
1. Width of contact area
2. Top of tooth to contact area
001904
GEARCASE
1
2
4
001906
1/3 of total tooth width
0.04 in. (1 mm)
1
2
001907
221
9