Inazuma 1200 Oil-cooled Katana Inspection Watanabe Front maintenance + SKF & Newtech Fork Oil Overhaul and More

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Today we’ll work on the front area.

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Corrosion is scattered throughout. Clear coat isn’t a cure-all. Wiping with rust preventative oil makes a huge difference.

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There’s some kind of damage on both the left and right bottom cases. What could it be?

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The interior dimensions seem fine. It’s good that there’s still room, but occasionally you see cases that have been dented from external impact, so we need to be careful.

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While wiping the outer edge with a paper wipe… something… isn’t deformed, is it?
And on both sides? With grooves on top and no height, a cylinder gauge won’t fit.

We don’t have an inside micrometer that large, so I checked it with calipers.
It turned out to just be poor finishing on the bottom case.

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We polished it with a “whoosh” and it’s back to looking brand new.

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We coated it and put the fork on hold for now.

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Moving on to work on the stem. The oil content is sufficient. It’s degraded and has become sticky.

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This is the only time we can clean it, so we’ll brush it thoroughly.

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Press in the race and confirm visually.

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It rubs a little, so we’ll do a break-in before using it.

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I don’t like this protruding head, so I’ll cut it down.

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The stopper bolt was bent, so for safety’s sake I’ll switch it to steel.
The usual electroless nickel plating.

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The bolt is now shorter and held down by the head, so it might be slightly better.

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We packed it generously with NC100 grease and assembled it.

 

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