Thread Tools Search this Thread
Old 02 March 2011, 05:01   #1
Country: Ireland
Town: Castlebar
Boat name: Clewless
Make: Valiant DR 490
Length: 4m +
Engine: 60 hp ETEC
MMSI: Awaitng one
Join Date: Oct 2007
Posts: 1,118
Purging air from a new steering system

I have just purcahsed a new baystar steering system. It is quite easy to install. (total time including removing old system circa 4 hrs)
I undertsand that purging air from the system can be a problem. How long should it take with two to purge the system


two stroke mick is offline   Reply With Quote
Old 02 March 2011, 10:37   #2
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,622
I did my Seastar system in about 45 minutes, working alone. I kludged up an external fluid reservoir that screwed into the filler cap: 1/2 gallon pitcher, an outlet using a fuel barb (sealed with rubber washers and held on with a nut), a length of plastic hose, a stopcock so I could shut off flow when filled, and another fuel barb to screw into the fill opening. At the other end, a short piece of plastic tubing over the bleed nipple that went into another container with enough fluid to keep the end submerged.

Follow the directions that are on the Seastar/Baystar website (or should have been included with your kit), but do one additional step:

Once you get everything bled according to the directions, close up all the bleed nipples, and open the filler cap (might want to put a towel or something over the top, though). Turn the wheel to full lock in one direction. Rapidly, and forcefully, turn the wheel about 1/2 turn off lock and back onto lock several times. If your system is like mine, you'll get a bunch of air bubbling back through the helm reservoir. Refill the fluid, and repeat until you don't get any more air coming out. Repeat with the wheel going to the other side.

It's a PITA, but not terribly difficult.


jyasaki is offline   Reply With Quote
Old 02 March 2011, 12:02   #3
Hightower's Avatar
Country: UK - England
Town: Fareham
Length: 6m +
Join Date: Sep 2003
Posts: 7,829
The only problem with the kit is the amount of Hydraulic oil they give you. I found I had to recycle it a bit (I don't recommend using oil that's come out of a system, even if it is new oil for fear of contamination) as there wasn't enough and I ran out of oil. I did forecast this and made sure my jam jar was super clean. But this gave me another problem with air bubbles in the oil that had gone around the system. So I just let it stand overnight and completed it the next day.

I might suggest getting another bottle of oil, just in case if not for topping up in the future.

Looks Slow but is Fast
Member of the ebay Blue RIB cover club.
Hightower is offline   Reply With Quote
Old 02 March 2011, 15:04   #4
RIBnet admin team
willk's Avatar
Country: Ireland
Make: Redbay Boats
Length: 9m +
Engine: 370hp
Join Date: Feb 2008
Posts: 12,154

I have an unused bottle of Seastar oil looking for a home...
willk is online now   Reply With Quote
Old 02 March 2011, 17:22   #5
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,622
The Seastar spec for their oil is the latest mil-spec aviation grade hydraulic fluid (MIL SPEC H-5606 C.) No idea why they spec it so high.

That said, even the way-too-picky aviation hydraulic fluis is cheaper than buying the Seastar quarts (which run about $18 - 30 US around here, as I recall.) A gallon of aviation hydraulic fluid (4 times bigger than the quart) runs about $30 - 40 US. The only big difference is the color (Mil Spec stuff is red; SeaStar stuff isn't dyed for ID of leaks.)

From the Seastar website, the following are approved fluids:

Seastar oil, HA5430
Shell Aero Shell fluid #41
Esso Univis N15 or J13
Texaco HO15
Chevron Aviation Hydraulic Fluid A
Mobil Aero HFA
Petro Canada Harmony HV115 (Canada only)

I anticipated using 2.5 to 3 quarts for my steering; I think it was probably closer to 2. No big deal; the fluid is not like brake fluid, and does not absorb water (despite what you read on the net.) Means I don't have to buy any next time I flush the system.

jyasaki is offline   Reply With Quote
Old 03 March 2011, 03:28   #6
Country: UK - Scotland
Town: glasgow
Boat name: arriba
Make: marlin
Length: 7m +
Engine: suzuki 300
Join Date: Jun 2007
Posts: 303
Originally Posted by willk View Post
I have an unused bottle of Seastar oil looking for a home...
still got the oil?
doing mine this weekend
pm me with price etc

never miss an opportunity
dougcrock is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 13:42.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.