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Sterndrive extensions
Installation instructions for 1"
and 4" extensions:
Drain the oil from the sterndrive.
Remove the cover over the shift mechanism.
Remove the screws (and washers) holding the lower
gear housing to the intermediate housing. Use a rub-
ber mallet and carefully knock the housing apart. Re-
move the splines sleeve.
NOTE! When installing a 1" extension the washers will
be used again and on the 4" extension the screws as
well as the washers.
Use special tool 884982 in combination with special
tool 884316 to remove the outer bearing race of the
axial bearing from the intermediate housing.
Clean the contact surfaces of the housing carefully.
Check the O-ring and replace it if necessary.
Press in the outer bearing race of the axial bearing in
the extension. See under
Shimming the intermedi-
ate housing and the lower gear housing.
NOTE! Measure the measurement ‘B’ on the exten-
sion!
The 4" extension
Coat the contact surface with a sealant, Volvo Penta
part no. 1141570-0. Use the 3 new O-rings and the oil
pipe from the extension kit. Install the extension on
the lower gear housing. Tighten the bolts ‘A’ and ‘B’ in
diagonal sequence. Tightening torques – see the
picture!
NOTE! Use washers ‘C’ underneath the 4 larger
screws. Then install the existing splines sleeve on the
lower vertical shaft and then the extension shaft and
the new splines sleeve.
1" extension
4" extension
Tightening torques:
A-G-K = 33 Nm
B-F-M = 18 Nm
