Maintenance manual
KONGSBERG PROPRIETARY.
This document and its accompanying elements contain KONGSBERG
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include this legend. ©2022 KONGSBERG - All rights reserved.
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11.5
Replacement of Gland Seals
The gland seals may need to be replaced if leakage occurs. Please see below procedure for
replacement of the gland seals. Remember to test Feedback units and any dismounted arrangement
on the actuator after replacement to ensure correct reassembly.
To avoid unnecessary leakage while waiting for new gland seals, run the Steering Gear system with
the pump not connected to the leak oil from the actuator. Remember to start the pump connected
to the leak oil every other day to ensure lubrication of the seals.
Upper gland seals
–
2 pcs [1]
Remove the upper gland ring. Remove the old gland seals. Grease the new seals with
Mobilith SHC
460
before installment and fill voids with grease before assembling the gland ring.
Lower gland seals
–
2 pcs [2]
The new seals must be cut and inserted around the rudderstock before the seals are glued back
together around the rudderstock. Use
Loctite no. 406
or
Loctite superglue no. 495
.
Note!
Cutting and bonding of gland seals is a temporary solution, used when vessel is in operation.
All glued gland seals must be replaced with new gland seals during the next docking.
KONGSBERG recommend doing this before the dismantling of the old seals to prevent contaminants
when gluing, and to provide the glue some time to harden.
Grease the new seals with
Mobilith SHC
before installing and fill voids with grease before assembling the
gland ring. To facilitate re-assembly of the lower gland ring, KONGSBERG recommend lowering the gland
ring by means of two lengthened screws/threaded rod with nut.
Illustration 1.
