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Old 07-23-2010, 05:27 AM   #1
Join Date: Jun 2010
Posts: 41
How do you replace an HWH Pump Motor?

I bought a replacement pump motor for my HWH 310 leveling system. But I can't figure out how to get the old pump motor off. I'm fairly good with this sort of thing but this ones got me. The motor has just two screws that go all the way through the motor with nuts on the other end to hold the two end plates on. So do I have to remove the manifold to get it out? I have searched HWH website but no luck. I am stumped. Please help.

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Old 07-23-2010, 06:35 AM   #2
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Join Date: Nov 2009
Posts: 2,043
My pump is a 'bolt-on' design with a flange being part of the motor end housing - this bolts onto the pump assembly itself via 2 machine bolts.. some are a 'weld-on' design according to this brochure...


Check this link here:
HWH Parts Index
Scroll down to the section on "Pump/ Motor/ Tank Assemblies"

More info here:

You always call them too.. they're wonderful with phone support.

94-Newmar Kountry Star 40-KSDP
Spartan/Cummins 8.3C-300HP/Allison 3060 WTEC-II/25yr RV Tech RVIA Certified/Onan-Cummins Certified
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Old 07-28-2010, 01:16 PM   #3
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HWH Pump Motor

I just had mine off a couple of weeks ago. You just unscrew the two bolts to remove the old one . The nuts stay one the bolts, just hand tight when you install it. Mine quit working and all that was wrong with it was a bad connection on the two ground brushes. You can buy the motor on line for around 230.00. Hope this will help. Danwes
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Old 07-29-2010, 05:43 AM   #4
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Posts: 41
I assume your referring to the two small 6 to 8 inch screws that go all the way through the body of the motor?
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Old 07-30-2010, 06:31 AM   #5
Join Date: Jun 2010
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Pump motor

Hi danny 124 Yes to the two screws. Just remove the screws and the nuts will stay in place. The nuts are on the screws to hold the motor together. On the new motor. just tighten the nuts hand tight and when you tighten the screws to the pump housing the screws will tighten also. Rember to align the pump shaft to the pump. Good luck. Danwes
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Old 08-01-2010, 04:08 AM   #6
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Posts: 41
Thanks for all the information. I replaced it yesterday in no time at all.

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