Hynautic helm ID

[donald roth]

I’ve got a Hynautic helm pump that dribbles a bit from the shaft seal, which crumbled on disassembly, so I dont even have a sample part to match.
The helm pump lacks any kind of ID plate or stamp, wondered if anyone was familiar enough with these items to identify it?
Thanks!

Topic

[Tony Athens]

Parts have always been fair priced………….Sounds like you are “going for it”..

Take some pics along the way and post what is involved.. It’s really nice to share what you “see” and learn to help others.. ..

Tony

[donald roth]

Tony, thanks for the ID help!
I got in touch with Seatech Marine, they were very helpful on the phone, and shipped the right parts out at a very reasonable price.

[Tony Athens]

It’s either a H41 or H42.. The difference is the internal volume ( 4″ vs 5.5″ per rev).. Basically they are “double pumps” built from the H21 or H25 put together as one. They usually are stamped “someplace’

A very good, but very old design, and is extremely tricky to work on.. Not for the timid minded. Think of it as dissembling a very complex “watch” that needs to be properly timed when put back together.. .. I walked away from one about 25 yrs ago after I took it apart.

You should be able to “google” some stuff on them.

Tony

[Author]

Replies