Treefarmer
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I just picked up a 2a042 generator cheap. It has no oil pressure. How do you get to the oil pump and is it hard to change?
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Military generator 2a042
- Thread starter Treefarmer
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I know that model engine (2 cyl, 42ci) was used on the MEP-017 5kW gasoline generator set and maybe others. Under the TM (technical manual) section for Generators you can find your specific model TM’s. These sets are loud and thirsty but will work for emergency backup power. Eastern Surplus has lots of parts for those engines, good luck.
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I just picked up a 2a042 (This is the type engine model.) generator cheap. It has no oil pressure. How do you get to the oil pump and is it hard to change?
The likelihood of the oil pump being bad, is VERY low. How are you reading Oil Pressure? From the gauge on the set? Or have you hooked up an external oil pressure gauge. And yes, please download the TM's.
The likelihood of the oil pump being bad, is VERY low. How are you reading Oil Pressure? From the gauge on the set? Or have you hooked up an external oil pressure gauge. And yes, please download the TM's.
Treefarmer
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I disconnect the oil line going to the oil filter. Turned over the motor with a drill and nothing come out of two hoses. I have a TM coming Friday, I just was wondering if I’m wasting my time or worth fixing (only payed 150$ fo this unit)
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Suggest you study the TM before you go further. You might have mis-identified some things.
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The engine TM's, see below. read -14. I find it hard to believe a drill is going to build up enough oil pressure. And again, where are you taking your oil pressure readings from? A hose? Not the best place to do that. Is this engine hooked to a generator? There and several different applications that use this engine.
Treefarmer
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I just had the hoses off going to the oil filter. I pulled the plugs so the engine spins pretty quick. Where would you suggest hooking up the gauge? This is a 5kw generator.
Treefarmer
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And Thank you for the manuals.
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You could use the ports of both the Oil Pressure Switch or the Sending unit. I would spin it over with two 12 volt batteries in series, (24 VDC). And its is possible to start this engine with a pull rope. If its not a wreck or has missing parts, I would do it that way. The -14 tells you how to do it. If you try to do that, take the engine cover off. Look at the carburetor. On top, in the middle is a brass screw. Take it out. Its about 1.5-2 inches long. Dribble fuel into the hole. Maybe an OZ or two. Put the screw back in. You have just filled up the carburetor with fuel and do not have to "prime" the carburetor by pulling on the rope as much. Works even better if you use to batteries to start in normally.
Treefarmer
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Ok Thanks
Treefarmer
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Thanks to all that helped. I got it running today and with an oil pressure gauge I had 50lbs of pressure. Reinstalled sending unit and it’s a bad sending unit. Thanks again.
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Good to go. It was pretty much what I thought you would find. The senders were not a reliable thing, and I am talking about 50 years ago.
If you do decide to use the gen set, keep your eye on the dip stick. If oil level goes up, look at the fuel pump. It needs a new diaphragm.
If you do decide to use the gen set, keep your eye on the dip stick. If oil level goes up, look at the fuel pump. It needs a new diaphragm.
LuckeyD
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Glad all worked out. 