Crankshaft Bearing Failure 150cc  By  JerryScript (Read 1,566 times)

Well when it rains in pours! First my younger nephew's Icebear had a con-rod bearing fail, had to split the case and replace the crankshaft. Next my older nephew's Rocketa had the stator pulse coil burnout, bent the flywheel removing it, had to replace both. Now my SSR just had a crankshaft failure. Let's hope it only comes in threes!

My 150cc SSR Phoenix stopped working a few days ago, and I started to pull her apart this morning. Got the plastics off and nothing visible wrong. Pulled the plug and cranked her over and had good spark, but she barely could turn over. Pulled the valve cover, and laying right there was this piece:

i1232.photobucket.com/albums/ff362/JerryScript/Scooter/20161130_134730_zpswghfycxh.jpg
i1232.photobucket.com/albums/ff362/JerryScript/20161130_134816_zpsb3bprqgr.jpg

For those who are wondering what piece of metal inside the engine has rivets and is shaped like that, it's the bearing retainer for one of the two main crankshaft bearings. Here's a pic of my nephew's old crankshaft showing it:

i1232.photobucket.com/albums/ff362/JerryScript/Scooter/20161130_145041_zpsvpgzyuwz.jpg

So I'm splitting my second case in two weeks. Got lucky with both the flywheel and the kickstarter gear. Was able to pull both off with a standard claw puller. Here's a pic of the kickstarter gear removal:

i1232.photobucket.com/albums/ff362/JerryScript/Scooter/20161130_133943_zpsdbfk8f56.jpg

Note- I used this same puller to pull the flywheel on my Nephew's Icebear and my SSR with no problems. However, on my other nephew's Rocketa, it bent the flywheel reverse mushroom style, so it had to be replaced. Use this method with the understanding you may have to replace the flywheel in the end, probably better to get a working flywheel puller (the one I purchased had bad threads).

Will post some more pics later of the rebuild. Not looking forward to removing the motor mount on this beast!