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How to remove pulley to the hitachi compressor motor

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I have a craftsman 3gallon 1hp air compressor when I plug it in the compressor clicks on and off motor not coming on can you please help me


With the unit disconnected electrically, remove the belt and try to manually turn the compressor pulley. If you cannot, if could be either of two things...a locked up compressor, or a clogged up reed valve assembly. Some compressors have external reed valves that function as compression relief devices when starting under pressure. They are prone to clog with much ussage.
If the motor will not start on it's on with the pulley removed, you probably have a faulty motor start capacitor. Motors of this size have to use cappacitorswhen starting. Any local motor repair shop should be able to supply you with and fix the capacitor fairly easily. Best Wishes

Sep 01, 2014 | Air Tools & Compressors

1 Answer

Compressor belt squeals


Gary:

Turn the compressor off, and check the sides of the belt that touch the pulleys. If the surface of the sides of the belt are shiny and slick, replace the belt (bring the old belt to any auto parts store and match it up to a new belt). To remove the old belt, check the mounting point of the motor, and mark where the edge of the motor mount meets the deck. Loosen the motor mounting bolts and slide the motor toward the compressor. Remove the old belt and install the new one. When you put the new belt on, make sure the tension is correct. slide the compressor motor away from the compressor and tighten the mounting belts. (At the center point between the pulleys, the belt should only deflect 3/8 to 1 1/2" when you push downward with about 8 pounds of pressure, (the general rule is 1/4 inch deflection per inch of belt between the pulleys.

Sep 19, 2013 | Ingersoll Rand Air Tools & Compressors

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The belt broke on this unit...how do I install it?


Unplug the power cord or shutting off the circuit breaker. Remove the belt guard loosen the four bolts that hold the motor to the compressor frame. The holes in the frame are slotted to move the motor for belt tensioning. Remove the old belt by pushing the motor toward the compressor. Place the new belt on the pulleys and hand tighten the four motor bolts. Align the two pulleys with each other. Apply a little tension on the V-belt. Place the bar at the base of the motor and push the motor back using the frame of the compressor as the leverage point & deflect the belt downwards with your finger. You should have approximately ½ inch of free belt deflection. Tighten all four motor mounting bolts & check the deflection of the V-belt and the alignment between the pulleys again. Realign or re-tension as necessary. A correct fit will ensure proper operation of the air compressor. Replace the belt guard on the air compressor and reapply the power. Check the belt movement through the guard and for proper operation of the compressor by following the manufacturer's instructions.

Jan 07, 2011 | Campbell Hausfeld 5 Peak / 1.7 Running HP,...

1 Answer

I have an Ingersoll Rand Type 30 air compressor. Model #234. I was given this unit because the motor had gone bad. I would like to replace the motor and use it but I was not given the bad motor with the...


One dealer for your model compressor is Northern. They are very good at replacement parts. If you do not have 3 phase power, you could shop around for 5 to 7 hp 220 v motor making sure that the motor mount will align with your plate. Pully size depends on dia. of pulley on the pump. Most pumps turn between 550 min to 1100 rpm depending on the power available and cfm requirements. Most motors turn at 1725 rpm so for example if your compressor has a 14 in. pulley then you motor will need a 5 in. pulley to turn it about 620 rpm. The larger the pulley at the motor the higher cfm produced but more amps used. Motor speed x pulley dia. divided by compressor pulley dia. To obtain more efficiency and highest cfm you will need 3 phase. Good place to see motors and two piece pulley combnations is www.grainger.com. Good luck

Sep 25, 2010 | Ingersoll Rand Type 30 Reciprocating Air...

1 Answer

Can you provide me with basic instructions on installing a drive belt in a dewalt air compressor? Thank you


Loosen the motor mounting fasteners and slide the motor toward the compressor. That should relax the old belt enough to remove and install the new one. Slide the motor back so that the belt tightens and the belt travels evenly over the pulleys. Try to get the motor pulley in the same plane as the compressor pulley and have about 1/2" of up/down play in the middle of the run of belt. Misalignment of the pulleys will accelerate the belt wear as will improper tension. Good luck!

Aug 08, 2010 | Garden

1 Answer

Hitachi EC12 won't refill air after initial startup


hi there,
of course comparative cost buying and repairing make a cost reduction.if your compressor run smooth but tripping,make sure where on the right path of diagnosing of your compressor,we can check if the motor or compressor is shutting off the unit.disconnect the belt from pulley of the motor to compressor,run the motor if still tripping w/o load its better if you have calmp ammeter test,to check the current rating,if it is tripping motor is deffective replace the bearing.f motor is fine sr till tripping check the compressor also the crankcase bearing,replace worn out bearing.have a nice day dont forget to fix my rate.thanks a lot.

May 03, 2010 | Hitachi EC12 Portable Electric 2hp Air...

1 Answer

My EC12 will not start. No sound, when trying to turn fan in rear it feels completely froozen solid.


hi there, in that case totally busted,there are motor protection should be checked if this are open. 1.check the source of current on circuit breaker using multi tester.if there is source or voltage supply.if nothing voltage supply reset breaker. 2.if current is available on circuit breaker check the overload protection relay if there is reset over load protection.try to power on. 3.check the pressure switch if open,it always normally close meaning the contact-or is closed if busted,replace pressure switch. 4.if still not work pull out motor and check this to electric motor service center. 5.check also the mechanical parts by cracking flywheel pulley of the compressor.if no rotation on flywheel pulley have check on this.if no motion it affects the motor protection. fix my rate and have a nice day thanks a lot.

Apr 19, 2010 | Hitachi EC12 Portable Electric 2hp Air...

1 Answer

I got a used Hitachi ec12 compressor, it doesn't start.


1.Check the motor first. You can readily see if it's
burned or not. Run a megger test on the motor.
Test run the motor without the compressor.
2. If, it does not run, have it checked at the motor
rewinding shop.
3. Once it is okey, remount the motor, and start it up.

Oct 29, 2009 | Hitachi EC12 Portable Electric 2hp Air...

2 Answers

I want to bypass my AC on a 4.3 Chevy motor. I do not want to remove the compressor as I plan on repairing it later. What pulley do I need to put on the engine below the compressor ?? With that pulley in...


There is a pulley that fits where the compressor is mounted. This means that the compressor would have to be removed and the a/c hoses would have to be sealed.

Oct 15, 2009 | 1996 Chevrolet Blazer

2 Answers

Hitachi ec12 motor hums after drop in pressue


There should be a pressure switch adjustment under the cover of the switch remove the cover and reset.

Feb 03, 2009 | Hitachi EC12 Portable Electric 2hp Air...

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