Midshaft movement?

Location
Salem, OR
My midshaft housing took a dump on my Superjet SN so I replaced it and also replaced the midshaft itself. All new bearings and seals and also I put on new couplers. The issue is the midshaft has some side to side movement. If I hold the housing in my right hand and grab the midshaft with my left hand it moves around a bit. I am guessing the single bearing has a little bit of play in it. Should I be concerned or just run it? Thanks!
 
Location
Salem, OR
I decided I didn't want to tear apart the midshaft housing to inspect it. So unless anyone says I shouldn't run it I'm going to run it. Im thinking the bearing was designed this way. Besides, it has a rubber damper on the couplers so it shouldnt have much movement in it.

Thoughts?
 
Location
Salem, OR
The midshaft spins fine and the bearing feels good. Its not really loose but just has slight movement at the coupler. I really don't see how I can assemble a midshaft wrong.
 
Location
Salem, OR
I believe it's movement in the bearing. I haven't touched it for a week so I'll have to double check. I was trying to align my motor when I noticed it had that play in it.
 
Location
Salem, OR
If I remember correctly, there are 3 seals. 2 at the back 1 at the front. 1 bearing in the middle and a circlip/snap ring that holds the bearing in its place. I pressed the midshaft with my shop press and spinning it has resistance from the seals. There is no in and out play.

I used all oem parts. I just don't want to tear it apart and ruin a seal and wait for shipping again.
 

Roseand

The Weaponizer
Site Supporter
Location
Wisconsin
How much play is there? I just rebuilt one and mine has nearly zero play back and forth between the bearing and shaft.

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Roseand

The Weaponizer
Site Supporter
Location
Wisconsin
That's a lot. I just rebuilt one that had about that much play. It was enough play for the rear seal to leak out grease and take in water.

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Fro Diesel

creative control
Location
Kzoo
Something went wrong there, or the circlip c-clip bearing retainer thingy isnt installed properly.

I have walked a mechanic through the parts diagram at an auto parts repair shop to rebuild a midshaft on holiday, done one myself with hf press, and had jetmaniac do them, and never this issue.
 
Location
Salem, OR
I'm guessing complete disassembly is required at this point? I doubt I'll be able to save the seals.

Sounds like any play is not good.

Maybe it takes a certain level of skill to screw this up! Lol

And just to make sure. This is play at the end of the coupler. Not the midshaft at the bearing. It would be minimal of it was at the housing.
 
Location
Salem, OR
I took off the front seal and the bearing has a lot of movement. I'm going to replace it. Looks like I'll have to order this crap again.

Thanks guys!
 

Roseand

The Weaponizer
Site Supporter
Location
Wisconsin
I took off the front seal and the bearing has a lot of movement. I'm going to replace it. Looks like I'll have to order this crap again.

Thanks guys!
Check out a local bearing supply place by you. Mine had the bearings, may have the seals too. They're listed somewhere here on the x

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