Question about Campbell Hausfeld Air Tools & Compressors

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I have a 5 hp. upright air compressor.The compressor runs but sometimes it will almost lock down and burn the belt because it is pulling hard then it runs good sometimes. The oil checks full.What can cause this.? Thanks Danny

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Check for contamination in the check valve at the top of the tank. If it has a restriction it will cause excessive head pressure. If it is not closing it will also cause overheating, and a telltale hissing (excessive) at the relief valve when the compressor kicks off.

Posted on Nov 12, 2009

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Motor turns and pump pully does not. burning up belt.


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Supercharge your Air Compressor for 20 bucks or less - Sawmill ...

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Jan 05, 2016 | Ingersoll Air Tools & Compressors

1 Answer

Bearing on brush is hard to turn and smells like it's burning


bearing hard to move will put strain on the belt and burn it. the bearing is easily removable pull it off, sometimes its just a good clean it will need, if will not come off tape it off. remove the muck build up and give the bearing a good soak in some wd40 or oil and wipe off and check for good movement then replace the belt. as it will snap more easy now it has been heated up.

Mar 15, 2014 | Eureka The Boss Upright Vacuum Cleaner

1 Answer

I have a 80 gallon 5 hp ingersoll model #2475N5 serial #30T900896. Im using 10-3 wire on 40amp doible pole breaker. as its building air when it hits @50 psi it slows down. if I pull the pop off valve on...


T wo suggestions. 1- check the check valve located in top of the receiver tank by letting the unit pump up to 50 psi. shut it off and loosen the copper tube at the HP cylinder. if no air blows out the check valve is good. If it's bad it will blow until it empties the tank. If the check valve is bad replace it. 2- Tighten the drive belt. If neither corrects the problem remove the guard and rotate the pump by hand. If it's hard to rotate you have a pump problem.

May 08, 2011 | Ingersoll Rand Ingersoll-Rand 80 gal. Air...

2 Answers

Will turn over with plug outbut is very tough to tturn over with plug in.no excess oil or gas in head ,new plug ,lots of oil.float in carb is free .seems not to be hydro locking.is it shot?very few hours...


running out of fuel is a bad thing but will not cause damage. take off the ohv cover. you might have to loosen and prop the petrol tank up to aid in removal. when you have the cover off check the valve assembly and look for cracking on the arms or broken pushrod.

Jan 07, 2011 | Honda Quincy 17 - Gallon Air Compressor...

1 Answer

The motor runs fine with the belt off but when the compressor is on line the motor hums and trips the house breaker.


Turn the compressor pump pulley by hand (with belt off) and air pressure in the tank. It should be very easy to turn. If it is hard to turn, evaluate the check valve for leak. If no leak examine crank bearings for damage. Repair as needed. If easy to turn fault is with motor. Check amp draw with belt removed. When the motor comes on, it should draw about 15 amps and drop lower. The motor should start and reach full rpm in a split second. It should start with a bang and run smoothly with-out getting hot and only pull low amount of amps. If slow start and high amp draw, check capacitor/s and or start winding switch inside of motor. Sometimes the start switch will burn the contacts and give trouble. If both capacitors test within 95% of value and start switch appears to be good, look for damaged copper windings. Windings will be discolored or burned and the tie strings binding the windings will be melted. Replace as needed. Good holidays

Dec 15, 2010 | Dewalt d55170 Electric powered air...

1 Answer

I have ingrosoll rand t30 model 2340 motor is working very hard to spin the compressor sound of compressor is different to , rubber burning smell is also there , but belt is in good shape it is not loose.


May have a bearing going bad. Remove the v-belt and turn the motor by hand. Does it turn hard or produce an unusual noise. If so you have a bad motor bearing. If not turn the pump by hand. If it turns hard or produces an unusual noise you have a bad bearing in the pump. Also move the pump fly wheel up and down , left and right. If you can move it the front bearing is bad.

Sep 20, 2010 | Ingersoll Rand - Rand Type - 30...

1 Answer

Electric motor works fine, you smell the belt burning because compressor unit turns over with much resistance, it has full oil level


It could have dirty/faulty check valves. Drain all of the air out and see if it is still hard to turn. If it is easy then, your check valves are letting pressure from the tank back into the compressor, putting it under excessive load. Clean/replace them as necessary.

Dec 01, 2009 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

4 Answers

I have a craftsman air compressor (small) with 2 wheels on end, my probelm is when i plug it up it buzzes only, will not start motor, what could be problem


unplug it and see if you can turn the motor pulley by hand, it should turn freely. If it does, check to see if the motor runs with the belt off. If the motor runs by itself then either the belt was too tight or the compressor is seized.

Aug 12, 2009 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

1 Answer

My Sears 1 HP compressor motor starts to slow down to almost zero RPM as pressure approaches 60 psi. Up until recently it produced 100 psi. Compressor rotates freely at shut down (no binding, etc). Is this...


IF IT HAS BELTS THE BELTS COULD HAVE BEEN LOOSE AND SLIPPING.. MOTOR COULD BE GETTING HOT DUE TO TOO SMALL OF CORD OR SMALL GAUGE DROPCORD. INTANK CHECK VALVE COULD BE GETTING CLOGGED NOT ALLOWING AIR TO PASS THRU IT. UNHOOK DISCHARGE LINE FROM HEAD TO THE TANK, THIS WILL ALLOW PUMP TO RUN UNDER NO STRESS AND SEE WHAT HAPPENS.

Apr 03, 2009 | Craftsman 3 gal. Air Compressor, 1.5 hp,...

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