DeWalt air compressor

[v1ru5879]

Hell of a deal! My bearings should be in today, any tips on pressing them onto the motor? Was thinking of popping them in the oven then trying to slide them on. What temp should I heat them?

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[cweidert03]

I think you should probably put them in the freezer over night. Or if you have a deep freezer. Did this on some trailing arm bearings for my quad and seemed to help a lot


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[v1ru5879]

I think you should probably put them in the freezer over night. Or if you have a deep freezer. Did this on some trailing arm bearings for my quad and seemed to help a lot


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I would have to freeze the armature for this application so the bearings would be able to slide on the shafts. I may heat the bearings and freeze the armature and in theory they should just slide right on

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[cweidert03]

Ahh makes sense. Sorry for the incorrect info!!


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[v1ru5879]

No worries. I'm going to put the motor in the freezer since now

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[The Cobbler]

heat the bearing with a hot air gun,or heated oil ( not too hot as to hit the flash point tho!

 

[v1ru5879]

heat the bearing with a hot air gun,or heated oil ( not too hot as to hit the flash point tho!

We have a lot of ovens at my work I was gonna heat them to 180-200f should be low enough to not cause damage but enough to expand a little

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[v1ru5879]

Got it all put back together flipped the switch n nothing :/ can someone link me to how to check the pressure switch with multimeter

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[v1ru5879]

Pinned it down to the brushes not making contact. Ordered new ones which should be about three times as long as the current ones. If I jam the brushes n give it a turn it will run. After a power cycle I have to do it again the springs can't push it down enough at this point

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[v1ru5879]

New brushes and she's ALIVE!!!! Off to get an airhose 50' 3/8 should be plenty for my use. Then some fittings along with a drain valve

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[v1ru5879]

Correction 25' should be more than enough

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[The Cobbler]

nice ! an inexpensive compressor

 

[v1ru5879]

Well after letting it run a while I noticed a burning smell and lots of sparks around the commutator :/ first thought was its just the new brushes getting broken in but I don't think that is the case

 

[Lelandwelds]

A welding supply will have a commutator stone for a few dollars. Might be something stuck inside there.

Many ball valves carry a 600 psi WOG rating (water, oil, gas). If you mount it on a short length of tubing, you won't need to bend over as far.

You did check voltages, etc right?

Absolutely worse case, you have a nice surge tank for a air blaster and parts for your next compressor.

 

[v1ru5879]

A welding supply will have a commutator stone for a few dollars. Might be something stuck inside there.

Many ball valves carry a 600 psi WOG rating (water, oil, gas). If you mount it on a short length of tubing, you won't need to bend over as far.

You did check voltages, etc right?

Absolutely worse case, you have a nice surge tank for a air blaster and parts for your next compressor.

I'll take it apart again tomorrow and take a look. I found a drain valve at home Depot for $5 1/4 turn easy drain. I tested the continuity. Is there a specific way to test the commutator with a multimeter?

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[v1ru5879]

Polished up the commutator with a wire Dremel attachment and she's running fine now. It was buggered up from trying to run it with the worn brushes

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