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Author Topic: internal oil pump wall cracked  (Read 700 times)

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Offline setdog

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internal oil pump wall cracked
« on: January 16, 2019, 10:57:11 AM »
rebuilding a dirty old oil pump and found an internal wall cracked.

its entirely possible i did it, but i only disassembled, dropped in a sonic tank, ran a nylon scrub brush over it and
found this big ole crack.

what might cause such a thing?  it doesnt appear to be a recent crack judging by the discoloration of the crack exposed
surfaces.

its also not loose and seems like quit a bit of force would have been need to accomplish this. 

strange.
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Offline Don R

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Re: internal oil pump wall cracked
« Reply #1 on: January 16, 2019, 11:32:05 AM »
 A foreign object going through it would leave a mark, possibly ice? 
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Offline flybox1

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Re: internal oil pump wall cracked
« Reply #2 on: January 16, 2019, 11:50:32 AM »
Quote from: Don R on January 16, 2019, 11:32:05 AM
A foreign object going through it would leave a mark, possibly ice?
...and marks on everything else!  :o
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Offline setdog

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Re: internal oil pump wall cracked
« Reply #3 on: January 16, 2019, 12:36:43 PM »
Quote from: Don R on January 16, 2019, 11:32:05 AM
A foreign object going through it would leave a mark, possibly ice?

ice is a distinct possibility, there was indeed plenty of water inside the pump, this might make the most sense that it was frozen over a winter, or multiple winters.
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My toolbox consists mainly of hammers.

76 CB 200T. (sold)
75 CB 750 K5. (sold)
74 CB 750 K4. (current rider)
73 CB 750 K3. (build)

https://www.youtube.com/user/setdog100
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