Kongsberg Simrad SU90 Operator's Manual page 203

Use an industrial grease designed for heavy-duty applications. The grease must
provide efficient protection against rust and corrosion, and resist water washout.
We recommend the following lubricant: Mobil Mobilux EP 2
• : Mobil
Manufacturer
•
Manufacturer's website
•
Kongsberg Maritime part number
Context
The hull unit was lubricated as a part of the production process. It was thus provided
fully lubricated when delivered to the vessel. During normal conditions, the lubricant
applied will last for a long period of time. Additional lubrication of the hull unit must
only take place when required.
Caution
Open the pressure relief plug before adding grease!
Procedure
1 Inspect the hull unit for water intrusion.
2 Consider whether it is necessary to add grease to the transducer shaft sleeve.
Adding grease to the transducer shaft sleeve is only required if the shaft is dry, or if
water forces its way up along the shaft.
3 Open the pressure relief plug.
You do not need to remove the pressure
relief plug completely. It has a groove that
allows excess lubricant to drain out.
4 Connect a grease gun to the nipple and add
grease.
Note
Do not use excessive amounts of lubricant.
If you add too much grease you may damage the internal bearings. Such damage
may result in a large water leak, and it may cause the hull unit to malfunction.
5 Stop applying lubrication when excess grease leaks out of the pressure relief plug.
6 Close the pressure release plug firmly.
Related topics
Preventive maintenance, page 186
381291/D
: https://www.mobil.com
: 654-079835
Maintenance procedures
201