(Another) Hardin pump issues thread...

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06-19-2019 | 06:14 PM

#21

Baja Rooster

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From: SF Bay Area

Quote:

Originally Posted by 14 apache

Do you have a caliper to measure the depth of the stainless housing?? Might be to long.

The depth reads on average 2.08 and if I give the impeller a firm reading it’s pretty much 2.00.

06-19-2019 | 06:22 PM

#22

Baja Rooster

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It looks like nearly an 1/8” gap. This is the oem Merc impeller. I got a Sierra one laying around and brand new measures even smaller.

06-19-2019 | 06:27 PM

#23

IGetWet

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You have this wear plate in the back of the pump correct?

06-19-2019 | 06:42 PM

#24

Baja Rooster

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Quote:

Originally Posted by IGetWet

You have this wear plate in the back of the pump correct?

Nope. That may explain a lot.

06-19-2019 | 07:59 PM

#25

14 apache

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From: Northport N.Y.

Quote:

Originally Posted by IGetWet

You have this wear plate in the back of the pump correct?

Good job on the find.

06-19-2019 | 08:36 PM

#26

IGetWet

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The Hardin email mentioned it, “inner wear plate”. I do have the same pump and thought as I was putting it together how the pump probably wouldn’t work at all if that small piece was missed.

06-19-2019 | 08:47 PM

#27

ph1971

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I wonder if Brembo has the same problem?

06-19-2019 | 09:07 PM

#28

Baja Rooster

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Quote:

Originally Posted by IGetWet

The Hardin email mentioned it, “inner wear plate”. I do have the same pump and thought as I was putting it together how the pump probably wouldn’t work at all if that small piece was missed.

True. In the haste of wrapping up a full rebuild trying to get it wet for the weekend it was missed. I vaguely remember it looking like a scrap blank of some sheet metal punch. OSO braintrust FTW!