Alpha I Gen II Impeller Face seal

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pete636ua

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Took my drives apart - found the impeller face seal about 1/2" from the top of the housing. These pumps have less than 10 hours on them. When I put them in early spring I followed merc manual 14 and pulled up on the vertical shaft while using the tool to press the seal down to the housing.

What would cause the seal to lift like it did??

What are the effects when the seal is that far above the housing?

Thanks
Pete
 
Reel Poor

Reel Poor

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Re: Alpha I Gen II Impeller Face seal

If it's still running above normal temp there could be a restriction somewhere causing water pressure to blow by the impeller and out the top of the housing. Just a WAG.....
 
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pete636ua

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Re: Alpha I Gen II Impeller Face seal

Reel Poor said:
If it's still running above normal temp there could be a restriction somewhere causing water pressure to blow by the impeller and out the top of the housing. Just a WAG.....
Click to expand...

One motor never ran over temp and the other did but only at WOT ??
 
Reel Poor

Reel Poor

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Re: Alpha I Gen II Impeller Face seal

Over heating at WOT could be a restriction in the riser outlets. Either where the risers bolt to the manifolds or the outlet side of the risers.
 
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pete636ua

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Re: Alpha I Gen II Impeller Face seal

Have pulled the risers - they are clear - no restrictions at either point....not sure what to do from here :( ????
 
Reel Poor

Reel Poor

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Re: Alpha I Gen II Impeller Face seal

What was he condition of the impellers you removed? If they/it had pieces missing did you find/locate the missing pieces?
 
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