Burnt out pump

wreckwriter

Member

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Joined

Jun 25, 2006

Location

Florida, USA

• Jun 19, 2008

• #1

Hi guys, My MCP655 has died a sudden death. I have a new one on the way but have a question about changing it out. Since the part that has gone bad is the motor, is it possible to screw the old bottom end off and replace it without draining the system? I don't recall if what type of connection is between the pump head and the motor.

Thanks guys!

 

felinusz

Senior Overclocking Magus

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Joined

Feb 26, 2003

Location

Taiwan

• Jun 19, 2008

• #2

Hopefully this helps:






I don't own one of these pumps, nor have I seen one opened up in person.

But, judging by that diagram, you'll need to drain your system to swap the motor (may as well just swap the whole unit).

 

OP

wreckwriter

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Joined

Jun 25, 2006

Location

Florida, USA

• Jun 19, 2008

• Thread Starter
• #3

Yup, looks that way. Thanks much.

 

Mpegger

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Joined

Nov 28, 2001

• Jun 19, 2008

• #4

Depending on how its mounted, and if the tubing is on really tight, it may be easier to unscrew the impeller housing instead of swapping the whole unit. But either way, you will need to drain the whole loop.

 

OP

wreckwriter

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Joined

Jun 25, 2006

Location

Florida, USA

• Jun 19, 2008

• Thread Starter
• #5

Yea, I was hopeful but I see you are right, it has to be drained. Probably will just replace the bottom end since the top end is nothing but a mount for the hoses. That will make the job quite a bit easier.

Thanks for the help guys!

 

4GHZ_or_bust

Now 6GHz or Bust!

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Joined

Aug 1, 2002

Location

Michigan

• Jun 19, 2008

• #6

Probably should have the whole thing replaced, not just the motor. The impeller could be worn out or something and you wouldn't want something to go wrong in a few days or so, forcing you back inside the PC again.

 

B

BobcatDan

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Joined

Jan 8, 2002

• Jun 19, 2008

• #7

I think he means everything but the top, which is just a piece of plastic, though I do agree. I would compare the old top to the new top and see if the old top has excess wear.

Also, how long did your old one last?
Dan

 

OP

wreckwriter

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Joined

Jun 25, 2006

Location

Florida, USA

• Jun 19, 2008

• Thread Starter
• #8

Yea, I mean everything but the top. Based on the diagram the top is just the inlet and outlet. As far as how long it lasted, not nearly what I expected, 6 months probably.

 

muddocktor

Retired

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Joined

Nov 1, 2001

Location

New Iberia, LA

• Jun 19, 2008

• #9

That's what always worried me about the 12v pumps. It's a bit of a PITA to set up a 120v pump in the system, but there is no arguing about the quality or longevity of Eheim or Iwaki pumps. That's why I stuck with 120v pumps from those 2 so far.

 

OP

wreckwriter

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Joined

Jun 25, 2006

Location

Florida, USA

• Jun 20, 2008

• Thread Starter
• #10

Got it changed with only the usual issues. I ended up changing the whole thing, it was less chance of spillage on good stuff that way. Thanks for the tips guys!

 

B

BobcatDan

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Joined

Jan 8, 2002

• Jun 20, 2008

• #11

Good to hear. That seems odd, given the 50,000 MTBF (thats over 5 years constant running). I've had mine for almost a year now with no issue. Did it run dry ever and did you add a lubricant to the coolant?
Dan

 

OP

wreckwriter

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Joined

Jun 25, 2006

Location

Florida, USA

• Jun 20, 2008

• Thread Starter
• #12

No, never dry and only a couple drops of Petra's nuke added to the water. I dunno, just a weak unit I hope.

 

B

BobcatDan

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Joined

Jan 8, 2002

• Jun 24, 2008

• #13

You may want to add a bit of lubricant to the loop (like water wetter or purple ice), but I haven't heard of many of these pumps burning out with or without it.
Dan