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 Post subject: crosshead feed pump not working
PostPosted: Sun Sep 10, 2017 3:24 am 
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Joined: Fri Sep 08, 2017 9:50 pm
Posts: 16
Boat Name: tug Anian


my brass feed pump doesnt seem to be moving water. There should be feedwater into pump as it is two feet below the lake level. two check valves, alas one buried behind flywheel. ideas? no water in outlet check valve cover


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 Post subject: Re: crosshead feed pump not working
PostPosted: Sun Sep 10, 2017 3:56 am 
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Full Steam Ahead
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Joined: Thu Nov 07, 2013 9:16 pm
Posts: 619
Location: Northeast Ohio, USA
Boat Name: SL Nyitra
Can you check that you have feedwater into the pump? Can you disconnect it and isolate whether it's your intake and check valves or the actual pump itself?

Pictures are always helpful...

-CB


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 Post subject: Re: crosshead feed pump not working
PostPosted: Sun Sep 10, 2017 6:38 am 
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Joined: Fri Mar 07, 2014 5:38 am
Posts: 412
Location: South Lake Tahoe, CA, USA
Boat Name: Wayward Belle
Could be several different issues or a combination:

Firstly, check the intake for obstructions... i.e. sea dock being closed, marine growth, sticks, plastic bags, or sadly even feminine hygiene products.... I hope you have a strainer on it.

Possibly air in the check valves depending on their type. If they have a cap on them, try just cracking open the cap a little to purge the air out and get a little water flowing... there may also just be crud in the checks, not allowing them to perform properly.

Is it a ram type feed pump, or a piston pump? If piston, are there metal rings or o-rings that seal the piston to the cylinder? Check those for their condition.

Where are you steaming your launch?

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Check out the steamboat videos on my YouTube page: https://www.youtube.com/c/wesleyharcourtsteamandmore


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 Post subject: Re: crosshead feed pump not working
PostPosted: Sun Sep 10, 2017 7:38 pm 
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Just Starting Out
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Joined: Fri Sep 08, 2017 9:50 pm
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Boat Name: tug Anian
thanks for the replies people. I am in a lake with freshwater. There is a strainer on the seacock. If i open the other seacocks to injector or hand pump the water just pours in. The main check on pump is buried between flywheel and standard so very very tough to get it, I didnt build the boat. Trying to put up photos as they are best for conveying conundrum. Thanx


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 Post subject: Re: crosshead feed pump not working
PostPosted: Mon Sep 11, 2017 4:02 am 
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Joined: Fri Mar 07, 2014 5:38 am
Posts: 412
Location: South Lake Tahoe, CA, USA
Boat Name: Wayward Belle
It would be wise to relocate that check to a more accessible spot for instances such as this... or when you're in the middle of the lake trying to troubleshoot upside down in the bilges with the boat being tossed about...

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~Wesley Harcourt~
Check out the steamboat videos on my YouTube page: https://www.youtube.com/c/wesleyharcourtsteamandmore


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 Post subject: Re: crosshead feed pump not working
PostPosted: Mon Sep 11, 2017 8:21 pm 
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Joined: Fri Sep 08, 2017 9:50 pm
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Boat Name: tug Anian
I have had the boat for 5 years so I am used to just using the injector. But my brain is thinking I have water near pump and much mechanical force at plunger, thus some water should be moved. gotta check the intake checkvalve


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