Replacement Of Gland Seals - Kongsberg Frydenbo IRV-2 Maintenance Manual

Steering gear

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Maintenance Manual

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 unit 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 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 406 or Loctite superglue 495.

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.

KONGSBERG PROPRIETARY. This document and its accompanying elements contain KONGSBERG

information which is proprietary and confidential. Any disclosure, copying, distribution or use is prohibited if not

otherwise explicitly agreed with KONGSBERG in writing. Any authorized reproduction, in whole or in part, must

Replacement of Gland Seals

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