1GM Impeller/CD25D

[jim jamieson]

I have had several impellers fail due to separation from the core that goes on the shaft - as soon as 9 hours after putting a new one in. This past season I have had an impeller that has lasted for 70 hours. Now after sitting in 50/50 antifreeze during the winter, I'm wondering if I should change the impeller or wing it. The thought of failure agains a current in the river where I moor is spooky. I bought one of the blue impellers from West Marine that claims it can be run dry for quite a while. Has anyone had experience with this impeller as compared to the Yanmar variety? Any thoughts - and what do others with CD25D's do?

thanks

jim



james.jamieson@yale.edu

[Chris Cram]

I replaced the impeller on my 1GM every year for 10 years and wondered why I was doing it because it always looked new. I used the Yanmar specific impeller this seemed to work fine. Good Luck



cccobx@prodigy.net

[Bill]

Hi Jim

Glad to see the impeller has lasted that long.

You might want to consider changing to a new one and using the old one for back up. Piece of mind is worth a bunch!!!!!

FYI (I may have already told you this), but I spun one of those last summer after only 3 or 4 hours. Called West Marine, they had a record of the purchase, and they sent me two news free....

Fair winds

Bill

I have had several impellers fail due to separation from the core that goes on the shaft - as soon as 9 hours after putting a new one in. This past season I have had an impeller that has lasted for 70 hours. Now after sitting in 50/50 antifreeze during the winter, I'm wondering if I should change the impeller or wing it. The thought of failure agains a current in the river where I moor is spooky. I bought one of the blue impellers from West Marine that claims it can be run dry for quite a while. Has anyone had experience with this impeller as compared to the Yanmar variety? Any thoughts - and what do others with CD25D's do?

thanks

jim

cd25d@rhapsodysails.com

[SteveZ]

I usually change mine every 2 yrs, but I rarely need to run my motor more than 10-12 hours a season. I have had only one failure in 10 yrs. Unfortunately, this happened in the Nassau during a trip to the Bahamas. Although I had a spare, I felt compelled to have another back-up impeller flown in (at an exorbitant price)in case of another failure. Also, I have heard that the non-toxic (pink stuff) antifreeze may be hard on rubber parts such as an impeller. Don't know if this is true.

[Dan VanWinkle]

I have just changed mine. Old one looked fine so I'm saving it in a small zip lock back labedl "used, replaced 5/2000" So I have it plus one other new one as spares. I learned somewhere that they should be removed each year and stored, well covered with silcon grease in an airtight bag. This was from a power boater. Sounds like a good idea so I may try it.dvw

I replaced the impeller on my 1GM every year for 10 years and wondered why I was doing it because it always looked new. I used the Yanmar specific impeller this seemed to work fine. Good Luck

dwinvan@aol.com

[Don S.]

Be a little careful... Mine LOOKED fine, but had lost it's turgor. The pulley spun freely until I changed the impeller. There was a big difference in resistance after it was replaced. IMHO it's too important a part to save a few bucks on.

Don Sargeant
~~COQUINA~~
CD25D #189
Finally in the water in Greenwich Cove

I have just changed mine. Old one looked fine so I'm saving it in a small zip lock back labedl "used, replaced 5/2000" So I have it plus one other new one as spares. I learned somewhere that they should be removed each year and stored, well covered with silcon grease in an airtight bag. This was from a power boater. Sounds like a good idea so I may try it.dvw

I replaced the impeller on my 1GM every year for 10 years and wondered why I was doing it because it always looked new. I used the Yanmar specific impeller this seemed to work fine. Good Luck

don@cliggott.com

[Dan VanWinkle]

Don,

Thanks, good point. I'll examine more closely next time at boat and toss if need be.

Be a little careful... Mine LOOKED fine, but had lost it's turgor. The pulley spun freely until I changed the impeller. There was a big difference in resistance after it was replaced. IMHO it's too important a part to save a few bucks on.

Don Sargeant
~~COQUINA~~
CD25D #189
Finally in the water in Greenwich Cove

I have just changed mine. Old one looked fine so I'm saving it in a small zip lock back labedl "used, replaced 5/2000" So I have it plus one other new one as spares. I learned somewhere that they should be removed each year and stored, well covered with silcon grease in an airtight bag. This was from a power boater. Sounds like a good idea so I may try it.dvw

I replaced the impeller on my 1GM every year for 10 years and wondered why I was doing it because it always looked new. I used the Yanmar specific impeller this seemed to work fine. Good Luck