9-24 LOWER UNIT
LOWER UNIT GEARS- SHIMMING AND
ADJUSTMENT
If lower unit has been rebuilt or has had components replaced,
shimming for correct gear contact and backlash will have to be
adjusted to ensure smooth, reliable operation of gears.
PINION GEAR BACK-UP SHIM ADJUSTMENT
1. Position shimming gauge A horizontally in a vise and tighten
vise securely.
\ 09951-09010 : Shimming gauge
2. Assemble bearing outer race 1, back-up shim 2 and
driveshaft oil seal housing 3 to driveshaft.
NOTE:
Use a thinner pinion back-up shim
2
than the standard shim
so that a clearance
B
exists.
3. Insert driveshaft through shimming gauge A opening and
then install pinion gear 4 and nut 5 to driveshaft, tighten
pinion nut.
""
""
" Pinion nut : 100 N
.
m (10.0 kg-m, 72.5 lb.-ft.)
4. Install oil seal housing 3 to shimming gauge A with bolts
6.
Numerical
index / item
Available
thickness
(mm)
Design
specification
Thickness
(mm)
Pinion gear
back up shim
0.60, 0.65, 0.70, 0.75, 0.80,
0.85, 0.90, 0.95, 1.00, 1.05,
1.10, 1.15
1.0
Forward gear
back up shim
1.0
Forward gear
thrust washer
3.0
3.0
Reverse gear
thrust washer
2.2
Reverse gear
back up shim
1.5
Shim / Washer & Mounting position
0.45, 0.50, 0.55, 0.60, 0.65,
0.70, 0.75, 0.80, 0.85, 0.90
0.9, 1.0, 1.2, 1.3, 1.4, 1.6
1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6
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