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Help an old rotary dude out....

Old 10-06-18, 07:15 PM
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AL Help an old rotary dude out....

So I was helping my son with a TII 13BT engine that he bought from a guy that rebuilt it but didn't set the thrust bearing properly and the assembly had almost 3mm of slop/forward-rearward movement. Took the front cover off (engine is on my work bench) and sure enough the front thrust bearing behind the plate was trashed. Removed all that to prep for new parts to replace the bad. It's been over 15 years since I've built a rotary. I made the mistake of spinning the assembly by hand as we were moving it around to rest on its flywheel. Then I remembered that I wasn't supposed to move the assembly with all that off. I did though. I've searched and searched and can only find statements of don't rotate the assembly with the gear off. Nothing says what damage is done by rotating. What have I done by rotating the assembly?

#sodisappointed #rustyrotaryknowledge
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Old 10-06-18, 07:48 PM
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The only time it's an issue is when the engine orientation is as it sits in the car and the e-shaft bolt is removed and replaced. The issue is that the thrust bearing can drop.

Your all good. Make sure to mark TDC for timing.

Last edited by KansasCityREPU; 10-06-18 at 07:51 PM.
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Old 10-06-18, 07:55 PM
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Originally Posted by KansasCityREPU View Post
The only time it's an issue is when the engine orientation is as it sits in the car and the e-shaft bolt is removed and replaced. The issue is that the thrust bearing can drop.

Your all good. Make sure to mark TDC for timing.
Have not installed new parts yet. Ordering them Monday. My concern is when it moved, I went to spin it back to where it was and it only turned a portion of the turn back. I was trying to hold the flywheel when I went to set the engine upright. It turned on me. I sat it back down on its bottom and went to turn it back, and it only turned about halfway back and stopped. It also doesn’t seem to move back and forth now. There’s nothing up front except the front gear. I just stopped instead of possibly messing something up
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Old 10-06-18, 09:39 PM
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Did you rotate it with the front stationary not in place? If so place the stationary back and rotate till it lines up and you can bolt it down. Should not be an issue its just a matter of getting the rotor gears and the teeth of the stationary gear to line up.
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