Seacore Equipped Drives; Seacore Components And Castings; Stainless Steel Fasteners - Mercury TDI 3.0L Owner's Operation And Maintenance Manual

Section 1 - Getting to Know Your Power Package
The serial number is also stamped on the gimbal housing. This is used as a permanent reference for Mercury Diesel authorized
repair facilities.

SeaCore Equipped Drives

SeaCore Components and Castings

Mercury MerCruiser SeaCore power packages are equipped with additional stainless steel components and particular
aluminum castings with special coatings. Do not replace SeaCore components with non‑SeaCore. Use only the specified
Mercury MerCruiser SeaCore components and castings on these power packages.

Stainless Steel Fasteners

SeaCore models are equipped with additional stainless steel fasteners to maximize corrosion resistance in saltwater
environments.
Stainless steel fasteners are subject to galling when installed without lubrication. Galling can result in fastener destruction,
improper clamp loads, or both. Galled fasteners may appear to torque properly, but still have incorrect clamp loads.
Apply lubricant 2‑4‑C with PTFE or an equivalent, on the threads of stainless steel fasteners during installation to avoid galling.
Lubricate at least the first 8 mm (1/4 in.) of the threads before installation.
Tube Ref No.
2-4-C with PTFE
95
Page 16
Description
a
Where Used
Threads of stainless steel fasteners
Gimbal housing with serial
number stamping
a - Transom assembly serial
number
25905
Part No.
92-802859A 1
90-8M0145546
eng
MAY 2018