Volvo Penta AQUAMATIC 280 Workshop Manual page 122

9. Install new O-rings (1) on the bearing box. Coat the
entire sealing surface and O-rings with Volvo Penta
part no. 1141570-0 sealant. Install the bearing box in
the gear housing.
10. Tighten the bolts to 40 Nm (30 lb.ft.).
11. Remove the seal protector (1) when the bearing
box has been installed and tightened. Clean off any
excess sealing compound.
1
12. Install the zinc ring on the lower gear housing.
Check to make sure that the contact surfaces are
clean and there is a good electrical contact.
An ohmmeter may be used to ensure there is little or
no resistance between the zinc ring and the lower unit
housing.
For more detailed information about Electrochemical
Corrosion, what causes it and how to prevent it, con-
sult publication 7733534-7, Marine Electrical Sys-
tems available from Volvo Penta.
Repair instructions
119