Suzuki DF70A Service Manual page 320

3A-26 Right Hand Rotation Unit:
Checking and adjusting tooth contact pattern
(Pinion and Forward gear)
Check tooth contact pattern using the following
procedure.
1) To assess tooth contact, apply a light coat of
prussian blue on the convex surface of the forward
gear.
2) Install the propeller shaft and housing assembly
(minus reverse gear and internal components).
3) Push the propeller shaft inward and hold it in
position.
4) Using the driveshaft holder tool, rotate the driveshaft
5 – 6 times.
Special tool
(A): 09921–28710 (Driveshaft holder)
I9J011310105-01
(A)
I9J011310106-01
5) Carefully remove the propeller shaft and housing to
check the tooth contact pattern.
"A"
"B"
"C"
"D"
"E"
"A": Concave side
"B": Convex side
"C": Heel
"D": Tooth top
Optimum tooth contact
The optimum tooth contact is shown in the figure. A shim
adjustment may be necessary to obtain this contact
pattern.
CAUTION
The driveshaft thrust play should be checked
when increasing or decreasing shim
thickness to adjust tooth contact.
Optimum tooth contact
"A"
"B"
"A": Heel
"B": Convex side
"C": Toe
"a"
"F"
"G"
I9J011310013-02
"E": Tooth bottom
"F": Toe
"G": Tooth contact pattern
"a": Tooth width
" a "
"b"
"C"
I9J011310014-02
"a": Approx. 1/3 of tooth width
"b": Approx. 1 mm