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Old 07-26-2021, 07:36 PM   #1
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O' rings for HWH 325 leveling solenoids

I am replacing the o ring seals on a HWH series 325 solenoid. ( Part no. RAP90729) New seals were purchased from HWH. (Part no. R7430) There are 48 seals in the HWH box. 28 that have a square cross section (16 with ID 9/16 in., 8 with ID 11/16., and 4 with ID 3/4 in.) 20 that have a circular cross section (8 with ID 9/16 in., 8 with ID 11/16 in., and 4 with ID 3/4 in.)

It appears that the old o rings were not HWH originals and instructions on were each type new seal is to be installed were not included. I am waiting for a call from HWH, expect it will be several weeks.

Will greatly appreciate instructions on which seals go on the valve end and on the end that exits the manifold.

Thanks
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Old 07-26-2021, 08:05 PM   #2
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This is all I can find.

https://www.hwhcorp.com/mr553000.pdf

Check this post. Contact AZPete. He works for HWH and helps a bunch of folks with issues.

https://www.irv2.com/forums/f115/not...de-459747.html
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Old 07-27-2021, 05:37 AM   #3
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X2 Contact Paul at AZPETE on the Irv2 forum. He works for HWH and can answer your questions. His email is pfmaddox@att.net and his phone number is 602-549-3638. He is a Commercial Member and has posted that his phone is always on, and if not answered, leave a message.

He has helped others on this forum and I am sure he can help you.
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Old 07-27-2021, 09:43 AM   #4
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The o-ring at the end of the solenoid has a backup (square) ring on both sides, the o-ring by the coil only has a backup ring behind it (away from the oil).
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Old 07-30-2021, 03:16 PM   #5
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Thanks for your information. Installed seals and stopped leak!
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