Repair my Emglo AM78-HV4V air compressor

Mike S. · 2006-01-15T23:53:43+00:00

We were using our Emglo and shut it down for a lunch break. When we cameback and tried to start it again all we got was a load electrical hum andsometimes it would pop our 15 amp breaker.I pulled the compressor/electric motor unit loose from the rest of thecompressor so I could get to its guts. When I turned the fan blade by hand(it turned very easily) I could hear the compressor piston working. I evenconnected the AC power back up but still heard the hum. When I gave the fana twist the motor started running the compressor. However, the motor won'tstart the compressor on its own.I tried a quick test of the start-up capacitor with my multimeter and itappears to be OK. It slowly climbs in ohms until infinity. Reversed theprobes and it does the same thing. Sounds like the capacitor is OK to me.I wanted to pull the electric motor loose from the case so I could see thebrushes and rotor. I removed all the mounting screws from everything Icould see, but I can't seem to pull the unit apart to get to the motor.Everything is loose and I can twist the case a few degrees, but I can't pullit apart.Anybody know how I can get the motor out so I can look at its guts. Anyhelp is appreciated. Pretend I'm a dunce and be pretty specific.Thanks,Mike

Jan 15, 2006 21 Replies

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Mike S. 20 years ago

Hi Bill,

Don't have it in front of me any more. Sent it home with my brother. But, if memory serves me correctly it's 60uF, 360VAC. The repair shop quoted $50.00, the Emglo (DeWalt?) website quoted $43.00. Pretty pricey item, I guess.

Mike

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Ignoramus12063 20 years ago

There are many starting caps/run caps/start kits on ebay. Check out

7576085987, HVAC MOTOR START CAPACITOR NEW 53-64 mfd 330 VAC M. About $11 with shipping. I consider this price expensive, by the way. Your dealer, though, is trying to rob you blind. i

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