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This problem of the fluid following the root/crest of the threads is also an issue for the water jacket cover plate and the fasteners for the aft end of the reversing gear. With the water jacket, the use of studs vs bolts is a known solution. What do folks think about using studs for the water pump? Might actually make it easier to undo the lower fastener as the threads on the nut can be clean and back off easily. Using a bolt, we're always fighting the sealant.
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