Walbro fuel pump disassembly

[joff]

Originally Posted by RETed

Just to play devil's advocate...

Do you know what the predicted life cycles of the fuel pumps are?
I mean it's one thing to argue certain parts are inferior (that's obvious), but what if it was perfected fine give certain operatin parameters?
Are you qualified to make those conclusions?

Also, if it isn't obvious, there are lots of Chinese fakes out there.
Can you confirm if the unit you've got is a true Made-In-USA unit?


-Ted

Its not my intention to argue whether or not this pump is inferior to anything else. I've tried to only present facts.

I am an electrical engineer and not making any conclusions. Brushed motors are known throughout the industry as not as long lasting as brushless. Wikipedia can even confirm this. At this point, I don't even know if other pumps use brushed or brushless motors.

This pump is not bad. Some positive to balance out what may have unintentionally been seen as negative:

*) The brushes seem long -- there is lots of spare length in the upper pump housing. Not certain how much life this pump has seen and what length the brushes started so I personally could not predict lifetime. If I dissected a brand new pump, I could measure brush lengths and give a percent used-up on this one.

*) The diaphragm's seem made of fiberglass. These material is flexible, yet very sturdy.

*) The patent is newer.

Its not obvious to me there a lots of Chinese fakes, I only have this one to compare. I try to do my own research on things rather than follow hearsay.

As to whether or not this is a true made-in-usa unit, please take a look at this pic:
13.jpg