Seakeeper 3 Operation Manual (90379-6) 3-243-5245 to Current
5.0 Maintenance
5.1 Maintenance Introduction
Seakeeper recommends a regular inspection interval and scheduled maintenance to keep the Seakeeper 3 running trouble-free.
If the Seakeeper is installed in a wet space, efforts should be made to keep the Seakeeper free of salt residue from either condensation or direct exposure to salt spray. If exposed, a regular wipe down and a rinse will help limit corrosion and keep the Seakeeper assembly in good cosmetic condition. Refer to Seakeeper Care article for details.
If any components of the Seakeeper or its sub-systems will be exposed to environmental temperatures where winterization is necessary for storage, reference Seakeeper Winterization article.
The Seakeeper comes standard with sealant and thread locker on applicable fasteners. When reinstalling all fasteners, use thread locker (Loctite 243 or equivalent) and sealant unless otherwise specified.
Reference Documents:
- TB-90426 – Seakeeper Scheduled Maintenance Plan
- TB-90747 – Seakeeper Annual Inspection
- Seakeeper Winterization Article
- Seakeeper Care Article

Due to remote start capabilities of MFDs, ENSURE power removed from Seakeeper and flywheel at zero RPM at display/MFD app before removing covers.
Hydraulic Hand Pump Kit is required for servicing the brake. Pressure should NOT be relieved unless this tool is available.
5.2 Scheduled Maintenance Table
The following pages contain the scheduled maintenance table organized by systems: Mechanical, Hydraulic, Cooling, and Electrical. Recommended scheduled maintenance is not covered under warranty.

- Scheduled Maintenance should be performed by a Seakeeper trained factory technician or trained technician within the Seakeeper Dealer network. Find a local Dealer on our website at Seakeeper Dealer Locator.
- A Seakeeper technician or Dealer is required to perform a brake service and to replace brake bushings or other brake components. This requires a complete flush, bleed, purge and pressurization of the closed hydraulic system.
- Scheduled Maintenance and the replacement of ‘wear’ items are not covered by the standard warranty. Visit https://www.seakeeper.com/standard-warranties/dc-powered-models/.