Question about Hitachi EC89 4 Gallon Twin Stack Air Compressor
Replaced pressure switch still won't fill tanks with air
Posted by Anonymous on
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Posted on Jan 02, 2017
hi your problem could lie in one of two areas
1/your unloader valve is stuck in the unload position
2/ your valves in the compressor pump head have broken and need renewal
hope that this is helpfull any further do not hesitate to contact
Posted on Dec 29, 2008
how do you know one tank drops to zero unless you have a pressure gauge on both tanks sounds unlikely unless you are looking at the gauge on the pressure regulator
Posted on Nov 27, 2009
SOURCE: I just put a new
Air leaking from tank back into compessor is indication that in-tank check valve is leaking. This condition will stress motor when trying to start. Test : With air in tank, unplug compressor from outlet and remove hose from compressor at checkvalve and test for leak (soapy water). If leaking drain air and remove checkvalve. Examine checkvalve for debris under seat (resurface seat or replace valve). Parts are at www.toolpartsdirect.com Good luck
Posted on Mar 14, 2011
Take the knob off there is a spring in it with a black plastic part. Most likly this is broken, look for it on eBay.this piece pushes in and opens the regulator.
Posted on Apr 13, 2013
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