Volvo Penta AQUAMATIC 280 Workshop Manual page 98

2. The gear length is fixed at 5.85 mm (0.230"). Add
or subtract the plus or minus marking of the gear
wheel. Subtract from this sum the sum of the 'F' and
'G' measurements. The sum thus obtained denotes
the thickness of the shim.
NOTE! On some gear housings for instance the fig-
ures 03 can be stamped or some other figure. In
these cases add the number 5.00 to that of the
'F'-measurement and the figure 1.00 to that of the
'G'-measurement. Then the 'F'-measurement ends
up being for instance 5.03 or some other measure-
ment above 5 mm and the 'G'-measurement for in-
stance 1.03 or some other measurement above 1.0
mm .
*
If the sum obtained does not coincide with available
shims, select the closest five – or ten – number. How
to calculate the shim thickness can be seen in the
following example:
*
Measurement 'F' 4.97 (0.195") stamped
*
Measurement 'G' +0.98 (0.039") stamped
5.95 (0.234") 5.95
Gear wheel 5.85 (0.230") fixed
Gear wheel marking +0.04 (0.002") etched**
5.89 ....
Calculated sum always positive!
As per this example a 0.05 mm (0.002") shim is in-
serted between the propeller bearing box and the
propeller thrust bearing. Carry on according to points
4–12 below!
* These measurements are examples.
** Only the figure 4 is etched on the gear wheel
Method 2
3. Insert the 0.2 mm (0.008") shim (1) in the propeller
bearing housing. This is a value of experience.
4. Install the propeller shaft along with bearings in the
gear housing. Be careful so that the bearing does not
end up obliquely in the bearing housing or that the
sealing rings are damaged. Make sure that the six
holes in the washer coincide with the screws. Insert
the nuts before the bearing is pushed home complete-
5.89
ly in the bearing box. Tighten the six nuts.
0.06 (0.002")
Repair instructions
1
95