9-24 LOWER UNIT
5. Depress and hold the driveshaft so that the driveshaft bear-
ing is firmly seated in the bearing outer race.
6. Hold the driveshaft against the oil seal housing 3 while mea-
suring the clearance B between the gauge and the flat edge
of the pinion gear 4 with the thickness gauge.
7. Select the pinion gear back-up shim of the thickness at the
clearance B become 1.5 mm (0.06 in).
FORWARD GEAR BACK-UP SHIM ADJUSTMENT
Follow the procedure below to adjust the forward gear / pinion
gear.
Step to prior to adjustment
1. Correctly assemble the driveshaft oil seal housing, the
driveshaft, the forward gear, the pinion gear and the related
components. (See the page 9-16 to 9-17.)
Do not install the reverse gear at this time.
Checking and adjusting tooth contact pattern
(Pinion and Forward gear)
Check the tooth contact pattern by using the following proce-
dure:
1. To assess the tooth contact, apply a light coat of Prussian
Blue on the convex surface of the forward gear.
2. Tighten the pinion nut to the specified torque.
& Pinion nut: 100 N
.
m (10.0 kg-m, 72.5 lb-ft)
Checking driveshaft thrust play
1. Affix the gear adjusting gauge to the drive shaft.
" 09951-09511: Gear adjusting gauge
2. To check the driveshaft thrust play, push the forward gear
inward and fix it by hand.
Slowly push the driveshaft downward, then read the maxi-
mum play.
Driveshaft thrust play:
Approx. 0.4 – 0.6 mm (0.016 – 0.023 in)
If the thrust play is larger than the specified, the thickness of the
forward gear back-up shim must be increased.
If the thrust play is smaller, the forward gear back-up shim thick-
ness must be decreased.
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