cd16 top roll pin rubbing

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sperry43

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Hey..I have a cd16 5.5 the roll pin at the top of the drive shaft that supports the carbon thing a majig and the cork seal is rubbing on the mid section housing. The water pump impeller pin is in the right position as far as height goes, not contacting the wear plate. What would make that roll pin contact the housing?? it does not stick out past the edge of the brass washer.
Any suggestions?
 
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F_R

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Re: cd16 top roll pin rubbing

sperry43 said:
Hey..I have a cd16 5.5 the roll pin at the top of the drive shaft that supports the carbon thing a majig and the cork seal is rubbing on the mid section housing. The water pump impeller pin is in the right position as far as height goes, not contacting the wear plate. What would make that roll pin contact the housing?? it does not stick out past the edge of the brass washer.
Any suggestions?
Click to expand...

I don't quite follow what you are saying. Here is how it is supposed to be assembled--is that how yours is?

The 303355 gasket should be glued to the 303356 plate and the pair are against the powerhead and do not move. Everything else rotates as a unit with the shaft.
 

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sperry43

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Re: cd16 top roll pin rubbing

Yes FR, #303261 is rubbing on the housing where the drive shaft comes up from the lower unit, Thinking about getting my dremel and removing a liitle bit of the housing so the pin wont contact the housing.
 
samo_ott

samo_ott

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Re: cd16 top roll pin rubbing

Well either it's the wrong pin or the drive shaft is out of alignment. Seems odd though.
 
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F_R

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Re: cd16 top roll pin rubbing

samo_ott said:
Well either it's the wrong pin or the drive shaft is out of alignment. Seems odd though.
Click to expand...

I just measured a couple of pins. They are supposed to be 11/16" long. Somebody put a longer one in yours?
 
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sperry43

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Re: cd16 top roll pin rubbing

FR I just figured out the drive shaft is going down too far,and letting the roll pin make contact with the mid section housing. Is there some kind of spacer to keep the drive shaft from going too deep into the shock absorber??
 
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F_R

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Re: cd16 top roll pin rubbing

sperry43 said:
FR I just figured out the drive shaft is going down too far,and letting the roll pin make contact with the mid section housing. Is there some kind of spacer to keep the drive shaft from going too deep into the shock absorber??
Click to expand...

If that is happening, why isn't the water pump drive pin dragging on the stainless plate? Well anyhow, to answer your question there is a bronze or hardened steel washer on the bottom of the shock absorber. Is the washer still there or is it worn out? If missing or severly worn, the shock absorber will drop down, and the drive shaft will go with it.
 
Chinewalker

Chinewalker

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Re: cd16 top roll pin rubbing

Has the lower unit on your motor ever been replaced? If so, there are a couple different upper shafts for that style lower unit depending on which motor the unit originally came on. It's possible yours has been swapped at some point and you have a shaft that is too short...
 
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sperry43

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Re: cd16 top roll pin rubbing

I think you hit the nail on the head!!
That is want it seemed like was that the driveshaft was too short. I did swap the lower unit for an Evenrude. It was a complete lower unit and looked identical, but didn't really compare the shaft length, but I bet you are right. Can I just drop a ball bearing or something in the shock absorber to make up for the short shaft??
 
Chinewalker

Chinewalker

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Re: cd16 top roll pin rubbing

Do you still have the other lower unit? If so, just swap out the upper driveshafts... Drying to cobble it together likely won't work well in the long run.
 
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