This past Thursday, four of the superchargers that came in for rebuild that had signs of failures. They varied from washer failures to bearing failures, and so I took a few pictures to show you all. One lucky guy had a bearing failure that was contained within the housing, so no pieces dropped into the engine. The rest had parts fall down and they'll have to worry about getting those out. I know in 3 of the cases the owner was outside the 2 year or 100 hour rebuild threshold. Sorry some of these pics aren't the best; I was taking them with my cell phone between rebuilds.
Failure 1: Picture 1 had rear bearing failure and the cage let go. Luckily for this guy the bearings stayed inside the house. With the increased lateral play, there was a touchdown of the supercharger wheel as can be seen in pic 2.
Failure 2: Pics 3-7 show a major bearing failure. Both bearing cages failed, and it resulted in another touchdown. You can see major scoring on the front and rear housing from the impeller making contact. The outer race on the rear bearing is stuck in the housing (picture 5), and in picture 6 you can see some of the deformed bearings.
Failure 3: Pics 8 and 9 are the same supercharger, just moving components so you can see the missing washers. This is what missing clutch washers look like. You can see the gap where the gear isn't touching anything but the shaft. The friction washers relocated themselves to inside the engine.
Failure 4: In this pic we have another washer but also a gear failure. Also in this case the pieces fell into the engine.
Failure 1: Picture 1 had rear bearing failure and the cage let go. Luckily for this guy the bearings stayed inside the house. With the increased lateral play, there was a touchdown of the supercharger wheel as can be seen in pic 2.
Failure 2: Pics 3-7 show a major bearing failure. Both bearing cages failed, and it resulted in another touchdown. You can see major scoring on the front and rear housing from the impeller making contact. The outer race on the rear bearing is stuck in the housing (picture 5), and in picture 6 you can see some of the deformed bearings.
Failure 3: Pics 8 and 9 are the same supercharger, just moving components so you can see the missing washers. This is what missing clutch washers look like. You can see the gap where the gear isn't touching anything but the shaft. The friction washers relocated themselves to inside the engine.
Failure 4: In this pic we have another washer but also a gear failure. Also in this case the pieces fell into the engine.
.. second time on this jet ski .. Supercharge failure I am so tired of it...
