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Thread: Atlas Imperial Marad genset 1947

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    Default Atlas Imperial Marad genset 1947

    Oh wise and all knowing GCaptain people, anyone out there old enough to have worked on one of these things, and young enough to remember how? First start in 15 or 20 years.... Found the operators Manual on online, but looking for any tips and tricks, especially the DC side.

    http://www.oldtacomamarine.com/atlas..._9x10.5_sm.pdf

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    Steamer is online now Top Contributer
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    Default Re: Atlas Imperial Marad genset 1947

    Where are you located? Is the genset on a boat now or is it sitting on blocks somewhere?

    Is it connected to a DC switchboard and are there loads available?

    When was the last time the engine had oil pressure and turned over?

    Can you raise fuel pressure?

    Will the fuel valves (injectors for the youngsters) close under pressure?

    Will the fuel isolation valves close tightly enough to prevent fuel from reaching a stuck injector?

    You know why I asked the last two questions, right?
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    Quote Originally Posted by Steamer
    Where are you located? Is the genset on a boat now or is it sitting on blocks somewhere?

    Is it connected to a DC switchboard and are there loads available?

    When was the last time the engine had oil pressure and turned over?

    Can you raise fuel pressure?

    Will the fuel valves (injectors for the youngsters) close under pressure?

    Will the fuel isolation valves close tightly enough to prevent fuel from reaching a stuck injector?

    You know why I asked the last two questions, right?
    Looks like she's in an old navy derrick barge crane if I'm not mistaken from the photos.
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    Default Re: Atlas Imperial Marad genset 1947

    Quote Originally Posted by rshrew View Post
    Looks like she's in an old navy derrick barge crane if I'm not mistaken from the photos.
    I'd say she is ex US Army Transportation Corps...WWII vintage old antiquated garbage that even a nation like Vietnam or Bolivia would reject. Fucking DC power on that thing!

    Why doesn't MarAd take some money out of the KP operating budget to build a new DP crane barge for itself and then charter it to the industry? Of course then hundreds of money sucking leeches that staff and operate the school won't get their cut!
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    Quote Originally Posted by Steamer
    Where are you located? Is the genset on a boat now or is it sitting on blocks somewhere?

    Is it connected to a DC switchboard and are there loads available?

    When was the last time the engine had oil pressure and turned over?

    Can you raise fuel pressure?

    Will the fuel valves (injectors for the youngsters) close under pressure?

    Will the fuel isolation valves close tightly enough to prevent fuel from reaching a stuck injector?

    You know why I asked the last two questions, right?
    She's in Sacramento delta, intact on a Derrick barge. Looks like everythings still there. And c.captains right, the switchgear looks like Frankenstiens basement.

    Ahoy Steamer, yes, drawworks? load is on the board.

    10 years or more.

    Unknown on the fuel pressure, looks like there's a hand pump but not feeling much resistance...

    Unknown about the injector springs/ seats, figured I'd spin her over on air with the snifter valves cracked open and see what comes out...

    Fuel isolation valves turn, and they're tight, that's all I know...

    I'm guessing the last two questions are about hydro lock and runaway. I'm going there now, maybe I'll try to hand pump some F/P...

    Thanks

    PS batteries just showed up, maybe we can get some air up if the aux starts...
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    Steamer is online now Top Contributer
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    Default Re: Atlas Imperial Marad genset 1947

    Reason I asked where you are located is there may be some local help.

    Can't see the photos.

    First, see if you can get some oil pressure up with an external pump then see if the thing can be barred over before you do anything else.

    Then see if the coolant stays in the water jackets and flows.

    Then see if you can even get fuel pressure up.

    If it has sat for 10 years you really ought to pull the fuel valves (injectors) and make sure they work. Make sure the governor and rack are free. A runaway is a real possibility if they don't shutoff. If the injectors pop early or piss you may experience the joy of a cylinder relief going off like a shotgun next to your ear followed by a cloud of the darkest smoke known to man. Or it might just break something irreplaceable.

    Is this genset intended to work for a living or is it a museum piece?

    Sure wish it was closeby, I would be there in a heartbeat to help get it going.
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    Quote Originally Posted by Steamer
    Reason I asked where you are located is there may be some local help.

    Can't see the photos.

    First, see if you can get some oil pressure up with an external pump then see if the thing can be barred over before you do anything else.

    Then see if the coolant stays in the water jackets and flows.

    Then see if you can even get fuel pressure up.

    If it has sat for 10 years you really ought to pull the fuel valves (injectors) and make sure they work. Make sure the governor and rack are free. A runaway is a real possibility if they don't shutoff. If the injectors pop early or piss you may experience the joy of a cylinder relief going off like a shotgun next to your ear followed by a cloud of the darkest smoke known to man. Or it might just break something irreplaceable.

    Is this genset intended to work for a living or is it a museum piece?

    Sure wish it was closeby, I would be there in a heartbeat to help get it going.
    Thanks, Steamer. I'll keep you " posted."

    She's either going to work or die...

    Cheers
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    Ahoy Steamer, hand pumped about 3700 psi on the fuel press, leaked down at about a 100/min with the injector hand valves open. Holds good with valves closed.

    No joy on the aux, batteries were flat but the beer's not...

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    Default Re: Atlas Imperial Marad genset 1947

    Never worked with an Atlas but have with a few other oldies. Another trouble spot can be start air injection valves hanging up. Also, as old as the seals are, keep an eye on the lube oil for fuel dilution and imulsification. Be sure to check you brushes and commutator condition before applying any load.
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    Default Re: Atlas Imperial Marad genset 1947

    Quote Originally Posted by injunear View Post
    Never worked with an Atlas but have with a few other oldies. Another trouble spot can be start air injection valves hanging up. Also, as old as the seals are, keep an eye on the lube oil for fuel dilution and imulsification. Be sure to check you brushes and commutator condition before applying any load.
    I might be able to dig around and find you a fine stone for strapping on a broom handle if you need to knock the green off the commutator a little. Wish I was closer. If the valves are good and you can get pressure she should start. If anything interesting is going to happen it will be after she's gets warm. [yes, I know..]
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    Default Re: Atlas Imperial Marad genset 1947

    Not knowing the gen controls and configuration, I'd say lift the brushes until the engine is running and checked out. The dirt dauber nests should be slung out of the armature by then.
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    Quote Originally Posted by injunear
    Not knowing the gen controls and configuration, I'd say lift the brushes until the engine is running and checked out. The dirt dauber nests should be slung out of the armature by then.
    LOL, I'm kind of hoping the combination of fine clay and bird spit makes a good burnishing compound...

    Not sure how much time they'll give me on this project, we're trying to salvage about a 130X50 barge under something like 20' of water, I figure every 100 tons of lift helps...

    (Plus I love old stuff). The machinery looks like it used to work. I'm guessing that the 150 kw dc gen needs external field current from the aux?

    Reading through the Atlas operator book I think I know why they went out of business. Jeez, pop the heads and pull the pistons Twice a Year?

    Thanks again;

    Dbtj
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