SMX Raw Water Pump

[Thomas]

I have had the SMX raw water pumps installed on my 6bta -370 for about 5-6 years now. At what point should I think about replacing the cam, seal and bearings? I have replaced the impeller once and will do it again this year. Although last time after 2.5 years they still looked like new.

Topic

[Rob Schepis]

Thomas wrote:

..Do you carry a spare SMX pump onboard with you?

No, I don’t, just 2 spare impellers/o-rings and a puller

 

[William Walter]

Tony, smx water pump purchased mid June 16 .failed July 4 16 .approximately 40 hours. Was sent back and told it was a shaft failure.would have liked to take pump apart and see what happened but was told to send it back.engine 480 ce.i have heard that term often but couldn’t picture what happened in pump.just curious.Bill

[Tony Athens]

Your post leaves much to be desired…..Kinda like me asking you   “How long is a string?”

 

1) What EXACT pump

2) Complete history from Day 1

 

 

Tony

[William Walter]

Pump failure

just curious.since I have had a shaft failure on a water pump what happens when a shaft breaks.does it develop a crack and then split.how often is this the reason a water pump fails.

[Tony Athens]

As much I tried to do my best when we designed our pumps. “Marine Age” is a factor in anything that has salt water going thru it, even in a Nuclear Sub where material selection and cost is not a factor.

Titanium as a base foundation metal,  mixed with a tad of Krytonite, a little  Seaboardium for shits & grins,  and some sprinkles of “Unobtainium”  would have been my choice, but it was out on my price range.

Your call on what “pro-active” means to you..  If you parked in fresh water, ask again in 5 more years.

Tony

[Thomas]

I have approx 750 hrs on the pump with no issues. Just want to be proactive in maintenance and not have a surprise leak while in the Bahamas. Do you carry a spare SMX pump onboard with you?

[Rob Schepis]

Marine age is a factor for all but engine hours apply here too.  How many hours on the pumps?

Interesting timing on your inquiry —- I am running the SMX pumps as well and mine now have 10 seasons and ~1,000hrs on them with nothing but a few impeller changes.  She’ll be getting hauled real soon and I’ll be pulling the pumps for a full “check-up”.

Maybe Tony or Corey can chime in with some history on what they’ve been seeing in the field…

 

[Author]

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