Volvo Penta AQUAMATIC 280 Workshop Manual page 109

Repair instructions
3. The nominal measurement of the forward gear is
39.50 mm. The tolerance (±) is engraved on the gear.
All engraved numbers are decimal millimeters. In this
instance, "-10" equals -0.10 mm. The real measure-
ment of the gear is 39.50 - 0.10 = 39.40 mm.
Add the height of the forward roller bearing to the real
measurement of the forward gear:
Add:
Roller Bearing =
Forward Gear =
Total forward gear length
This sum should be subtracted from the
"G"-stamping resulting in a shim thickness for the
front bearing:
G-measurement
Total forward gear length
Shim Thickness =
106
20.85 mm
+ 39.40 mm
60.25 mm
60.85 mm
- 60.25 mm
00.60 mm
884793
4. Lubricate the bearing position before assembly.
Place the calculated shim thickness in the gear hous-
ing and install the outer bearing race (marked 30209)
with special tool 884795.
NOTE! The plastic disk (1) should be pressed as far
in as possible on the tool.
884801
5. Press on the front roller bearing onto the forward
gear. Use special tool 884801. Use special tool
884797 to protect gear teeth.
1