Installing the WILBERS Shock Absorber
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Getting closer! Now you can remove the lower mounting bolt, which is quite easy to get to. On the right side of the bike, you'll need a 19mm wrench to hold this bolt head ...
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While you take a 17mm socket to break free and remove the locknut, whereupon you can push the bolt out through to the right side:
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Last step to remove the old shock! You must remove the upper rear dogbone bolt, which affixes the two dogbones to the swingarm mount flange. Below I have just finished removing this bolt, freeing the dogbones and allowing the shock linkage to drop out of the way. At this point you can remove the OEM shock in it's entirety from *below*, snaking out the preload cables and preload lever assembly at the same time.
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Sadly, Yamaha, as usual, did a PISS-POOR job of corrosion prevention on this bolt, and as you can see, it is all fucked away with nasty-ass corrosion! This bolt resides inside a smooth, polished stainless steel collar which rides against needle bearings inside the swingarm mount flange. It took a lot of steel wool, WD-40 and elbow grease to remove this corrosion. GRRRRRR!!
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Closeup of the needle-bearings inside the swingarm shock linkage mount flange. You want to clean this up and pack with your favoite grease. I personally use Mobil One Universal Synthetic Grease. This is a perfect opportunity to disassemble the other end of the shock linkage and clean and lube there as well. Pack the needle bearings as best you can with new grease, and thoroughly lube the stainless steel dogbone collar inside and out, and re-insert it into its housing.
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