Kongsberg Simrad ST90, Reference Manual

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We recommend the following lubricant: Mobil Mobilux EP 2
•
Manufacturer
: Mobil
•
Manufacturer’s website
: https://www.mobil.com
•
Kongsberg Maritime part number
: 654-079835
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.
Maintenance procedures