20 Most Recent Campbell Hausfeld 04 Gallon Twin Stack Compressor HL5502 - Page 5 Questions & Answers

it is a replaceable part -if available-- but they are very seldom faulty as you have not described a symptom of what brought you to that conclusion it is difficult to help you As an indication of a problem, if the motor refuses to start, hums or does nothing , the most likely problem will be the start/run capacitor as they fail on a regular basis so check it for leaks , expanded case etc

try https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=10&cad=rja&uact=8&ved=0ahUKEwi4lO6_yIvRAhUK04MKHUTRC_sQFghHMAk&url=http%3A%2F%2Fwww.chpower.com%2Fproductdetail%2Fgenuine-replacement-parts-single-stage-pressure-switch_gr004500aj&usg=AFQjCNFWT5I-5euTnd67WxGvd52b06TdMQ&sig2=J1JjOWjfb9cgkAzSoRASLA

I think you are asking where is the check valve or one way valve. There is a copper tube that takes the air from the cylinder head of the pump to the tank - the check valve is combined with the fitting that attaches that tube to the tank.Most of it actually stickes inside the tank.

that number is not the model number - it is the UL file number for the manufacturer. Describe the compressor. the model wil lbe two letters and ten 4 to 6 numbers: WL6501 VT5587 FP200100

need more information - describe what it does Does it hum or buzz, or absolutely nothing. ?

The screws are either 1/4 inch or 5/16; I can't remember for sure - they may even be metric. But the torque is not really critical. Try 4 to 5 ft pounds.

Check for air leaks above the top of the feeder tube. If it leaks air there, then no suction. Bad gaskets often cause this.

check and test wiring --motor [seized or short ] air pump for siezure

dont know size of unit ---if 220 check power in- under that will bog motor same with 110v --if using extension cords to long a feed from source and your voltage drops from resistance in wires ---motor may need service oil bearings --same with compressor motor oil change/needs oil added

could be a reed valve

airless sprayers have a pump that pumps the paint through a jet at pressure . there is no oil and it is vital that when finished that the pump be spotless after cleaning

Please do not yell, and please proofread before posting. My guess it was on it's side, oil from the crankcase slipped past the rings and the valve into the tank. Other guess is you have way too much oil in the crankcase. Drain it out the tank via the condensate drain. If you want to clean the tank, only use nonflammable cleaners. Look at the brake cleaner row in a car parts store. Remove the drain screw. Spray a lot in the tank. Swish it around, drain. Repeat till what drains out is oil free. Drain and refill the oil in the crankcase to the fill line, or to the required amount per the owners manual.