Volvo Penta AQUAMATIC 280 Workshop Manual page 39

Repair instructions
5. Measure the depth of the recess in the collar wash-
er "E" and add to this measurement a number of
shims (5) that the measurement "B" is obtained.
6. Place the collar washer in position and tighten the
double bearing box. Use special tool 884483 and the
universal joint screw.
NOTE! Coat the screw with Loctite locking fluid or its
equivalent. The tightening torque should be 75 Nm
(55 lb.ft.). Rotate the double bearing box a few turns
and check once more the prestressing (5–11 Nm,
3.69–8.11 lb.ft.). Should the prestressing be too high,
remove the recessed washer and press back the gear
wheel somewhat. Then add more shims underneath
the recessed washer. On the other hand should the
prestressing be too low, reduce the number of shims.
Then tighten the double bearing box again with the
screw and the special tool 884483 and check the pre-
stressing.
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884483
Forward and reverse gears
884265
884168
7. Lubricate the bearings (1) and press the bearings
into their respective bearing boxes (2).
NOTE! Turn the bearings with the recesses in the
bearing races (3), for the assembly of the balls, fac-
ing away from the gear wheels. Use special tool
884168. Then press on the bearings and the bearing
boxes onto the gear wheels (4). Use special tool
884265.
NOTE! Protect the gear cup (5) during the compres-
sion to avoid that it is being deformed.
1
8. Always start by adjusting the forward gear. If the
previously dismantled gears are to be used, it is im-
portant not to mix forward and reverse gears with each
other when assembling. On sterndrives having left
hand rotating propeller as standard, the lower gear is
the 'forward' gear (1). Sterndrives having right hand
rotating propeller as standard, the upper gear is the
'forward' gear (2).
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3
2
4
5
2