Question about Hitachi EC2510E 5.5hp Gas Air Compressor

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Go to and type in your model number and you can get a schematic for this tool and also order parts online. Let me know if you need anymore assistance

Posted on Feb 10, 2009


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017


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What kind of oil do i usefor the pump?

Compressor pump oil is available at Lowes (Kobalt brand) or Home Depot (Campbell Hausfeld brand). If you do not have a lumber center neer you then just go to auto parts store and buy 30wt non detergent motor oil. If you work your compressor very hard, buy synthetic oil (also at lumber center). The synthetic oil will take much higher temperature but cost twice as much. If you do not work you compressor all that hard however, stick with the lower price oil and change a little more often. Good luck!

Feb 10, 2011 | Hitachi EC2510E 5.5hp Gas Air Compressor

1 Answer

Looking for unloader popoff assy on ec2510e

Part is available here :
Factory part is very expensive.
If you are good at plumbing you could use a generic unloader for about 1/3 of the price, available at The generic valve has 1/2 npt female threads on both in and out ports. Good luck

Sep 10, 2010 | Hitachi EC2510E 5.5hp Gas Air Compressor

1 Answer

I need the plastic cap that covers the oil fill hole on pump

Just put your postal code in and will show you your nearest retailer..... The one you provided comes up invalid. On same page you can click to view owners manual and see a parts list.. Hope this was helpful

Jul 17, 2010 | Hitachi EC2510E 5.5hp Gas Air Compressor

1 Answer

Pump oil leaks out of breather pipe plug


The breather pipe plug is actually a PCV valve that is stuck open. You can flush it clean with CarbClean, until you hear a rattling noise inside when you shake it. OR you can replace it. AutoParts stores carry tune up items for most small gas engines.

If helpful, click below, Good Luck

Apr 12, 2010 | Hitachi EC2510E 5.5hp Gas Air Compressor

2 Answers

Getting oil coming out the end of my air hoses and excess oil around my crank case. Thanks for any help

vent filter dirty. You need a clean filter on both electric and gas, b ut gas will suck oil from crankcase and push into airlines

Mar 09, 2010 | Hitachi EC2510E 5.5hp Gas Air Compressor

1 Answer

Can i use a impact wrench with my hitachi ec2510e gas air compressor

Yes, but it may drain your air supply quickly and you might have to take little breaks and wait for it to fill up again.

Feb 04, 2010 | Hitachi EC2510E 5.5hp Gas Air Compressor

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