Seakeeper 4 / 4.5 Installation Manual (90762-1)
2.3.3 Installation of Seakeeper
- Lower Seakeeper into position onto the hull foundation beams and align over drilled holes. Apply a small bead of marine sealant (e.g., SILI-THANE 803 or equivalent) between mating surfaces of Seakeeper frame and hull structure to prevent moisture wicking into bolt holes.
- For dissimilar metal foundations, locate and position four isolation gaskets onto foundation beams and apply a small bead of marine sealant (e.g., SILI-THANE 803 or equivalent) between both mating surfaces of each isolation gasket where it contacts the beam and the Seakeeper.
- Install mounting fasteners:
- For Blind Hole installations, install the Seakeeper supplied Grade 10.9, M16-2.0 X 80 mm fasteners to maintain a minimum thread engagement of 0.94 in. (24 mm). Apply a moderate coat of nickel-based anti-seize (e.g., SAF-T-EZE nickel grade anti-seize, SBT-4N, or equivalent) to the threads of each bolt and include a small bead of marine grade sealant (e.g., SILI-THANE 803 or equivalent) under each bolt head and washer before installation.
- For Through-Bolt installations, install the Seakeeper supplied Grade 10.9, M16-2.0 X 95 mm fasteners with a minimum of 2 threads passing through the nut. Apply a moderate coat of nickel-based anti-seize (e.g., SAF-T-EZE nickel grade anti-seize, SBT-4N, or equivalent) to the threads of each fastener and include a small bead of marine grade sealant (e.g., SILI-THANE 803 or equivalent) under each bolt head and washer before installation.
- Torque all fasteners to 155 ft-lbs (210 Nm).
- New bolts, matching the Seakeeper specification, must be used for each installation that meet the requirements listed above.
- Proceed to electrical and cooling installation.