Vetus ZWB25RESA Instructions D'utilisation page 4

ENGLISH
Propeller Shaft Seal replacement
N.B. The numbers refer to the numbers in the drawings.
Never remove the shaft seal when the vessel is off shore.
1
Remove the 2 hose clamps which secure the inner bearing to the
sleeve.
Loosen the water supply hose and remove the inner bearing
together with the shaft seal from the propeller shaft.
2
Disassemble the bolts and take the old shaft seal apart from the
inner bearing. Remove old grease if present and clean the inner
bearing.
3
In addition to lubrication by sea water, the seal must also be lubri-
cated with grease between the seal lips.
4
Clean the propeller shaft, especially where the shaft touches the
flexible bearing and seal.
Grease the shaft and the lips of the shaft seal.
Only use the grease supplied. Any other lubricants could damage
the shaft seal, the sleeve, or the rubber bearing.
5
Fit the inner bearing on the propeller shaft and slide it into the
sleeve.Tighten the hose clamps (4 to 5 Nm torque).
6
Stick a piece of adhesive strip 'A' over the keyway. This will prevent
the shaft seal being damaged when fitted on the shaft.
Damage to the seal edges will lead to leaks!
Grease the seal lips. Fit the shaft seal on the propeller shaft. Ensure
that the O-ring is properly in place and secure the shaft seal with 3
screws (10 Nm torque).
7
A Remove the adhesive strip with a twisting movement; this way,
the seal lips are prevented from ending up in the wrong position.
B Remove the screw with the ring and fill about 50% of the forward
space with grease (approx. 1 cm
Replace the screw and the ring, tighten it to about 5 Nm.
C Reinstall the water supply hose.
After launching
- Check the following for leakage immediately: the shaft seal, the rubber
sleeve connections, and all the hose connections.
- It may be necessary to bleed the assembly first. Disconnect the hose
from the inner bearing until water flows out.
- Always open the seacock (after the water scoop) before casting off.
- Check the shaft seal for leaks and its temperature while cruising. An
excessively high temperature indicates insufficient water for lubrica-
tion and cooling!
Spare Propeller Shaft Seal
W
arning
3 ). Use only the grease supplied!
030308.03