Thread Tools Search this Thread Display Modes
Old 08-25-2019, 05:37 PM   #1
Lou_tribal's Avatar
City: Quebec
Vessel Name: Bleuvet
Vessel Model: Custom Built
Join Date: Jan 2016
Posts: 4,056
Sea star helm pump port mapping

Hello fellow TFers!
Today I have a question regarding helm pump lines connections.
I have a dual station setup.
My upper helm pump has 4 ports, lets call them East, West, North and South.
East and West are connected to main lines going to cylinder.
South is connected to lower helm pump North port.
In the seastar doc I see that in dual station setup the north port of upper helm appears plugged (not used).
On my install the North port is connected to a foot of hose that has a kind of plug at the other end. That strange plug has a pin hole in the middle and remind me of a kind of valve or something like that.

Would anyone have a idea of what this can be and if it should be there or if I should plus the port and call it done?

Today I changed my cylinder hose and I purged the lines but oil was flowing from that hose. Before turning the wheel to pump oil in the lines oil was free flowing from the bottle through that hose, bizarre.

Thank you for any input!


Lou_tribal is offline   Reply With Quote
Old 08-25-2019, 05:55 PM   #2
C lectric's Avatar
City: Gibsons, B.C.
Vessel Name: Island Pride
Vessel Model: xxxx
Join Date: Oct 2007
Posts: 3,100
That upper helm North port with the hose leading to a plug with a hole in it is the system vent. Without that vent atmospheric changes of temperature would force oil out of some seal somewhere. It only needs a tiny hole for the vent but it must be there.

When changing something you allow air into the system. That air will force oil to move upwards untill the air gets to the vent which will also overfill the upper helm and force oil out of that vent line.

I have an older Wagner system but quite similar with the upper helm vent.

I removed the vent fitting and installed a hose/pipe adapter and a hose that lead to a 1 gallon , old gas jug {CLEAN} that had about 2 L oil in it.

The end of the hose was submerged in that oil. The container contained the inevitable burping and spatter from the air pushing that oil ahead of it.

That same container and hose was used to recharge the system with the new oil. THe turning of the helm stations will pull new oil into the system to recharge it.

Do not just defeat that tiny hole or you will likely have a leak at one of the helm stations later. Or any vacuum may pull air in.

Actually a better vent fitting would be a sintered bronze vent usually available from a pneumatics supply house.

C lectric is offline   Reply With Quote
Old 08-25-2019, 06:10 PM   #3
Comodave's Avatar
City: Au Gres, MI
Vessel Name: Never Say Never
Vessel Model: President 41 DC
Join Date: Jul 2015
Posts: 10,081
Yes the “north” port is the fill and vent. Seastar makes a filling hose that goes on a quart bottle. You turn it upside down and poke a hole in the bottom of the quart bottle to let air in when the oil goes in. There are some online videos that show purging the system.
Boat Nut:
If you are one there is no explanation necessary.
If you aren’t one, there is no explanation possible.
Comodave is offline   Reply With Quote
Old 08-26-2019, 11:45 AM   #4
Lou_tribal's Avatar
City: Quebec
Vessel Name: Bleuvet
Vessel Model: Custom Built
Join Date: Jan 2016
Posts: 4,056
Thinking about it after I posted this I was wondering if it would be a good idea to fit a reservoir there. I have my answer now
I need to find s suitable reservoir.

Lou_tribal is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program

All times are GMT -5. The time now is 02:41 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012