SC coupler direction

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Registered User
Replaced my super charger but I feel like I messed up and before I break things I need some help. My SC coupler that goes from the snout to the gears. Mine has a spring in it and I think I put it in the wrong way. Should that spring be on the side with the gears or the side towards the snout? There are 3 post coming from the snout do those go into the slotted side of coupler or no?
 
Just trying to make sure this is right
 

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Incase anyone needs to know it seems that it goes the way I have it in the picture above.
 
You are probably the only one in the world with the old spring style. I haven’t seen one of those in 20 years.
 
I would put in the solid style if you like a supercharger that sounds like a can of marbles. I did that and I will go back to the spring style any day. They run quieter. Seems the engineers at Eaton knew what they were doing. Go figure.
Alan
 
solid couplers are quiet, springs couplers will get noisy with age. If your solid coupler made noise then it was not made properly. I have rebuilt probably 20 some Eaton m90s all with solid couplers and no noise.
 
It came with the super charger when I bought it from someone here so I just used what I had and what was there
 
Are the pic's you posted the original (failed unit)?
Its very cruddy looking inside the case.
 
No that's the one that went back on before it was cleaned I changed the super charger but had to use the old snout. The first snout destroyed the couple which is why I have 2 super chargers but I only have 1 snout.
 
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