20 Most Recent Campbell Hausfeld 04 Gallon Twin Stack Compressor HL5502 - Page 6 Questions & Answers

Google the model number, download a copy of the owner's manual, follow directions. Try searching that model number at harborfreight.com If the manual does not exist anymore, and the pump has a sight glass, fill with clean, non-detergent straight 30wt motor oil, available at most car parts stores. If there is no sight glass, drain what is in there and pour in 1/2 qt. No promises that is right, but it is likely close. Last option, go to a Harbor Freight store. Look for a compressor with a pump that looks like yours on size and shape. look at that manual and use that amount of oil. Good luck

Insert rope fully in first pully and partially in second. Now rotate the first pully gradually. Belt will get in place by itself.

Bill: I would remove the pressure gauge and check the bottom of the air gauge fitting. The small hole at the bottom of the gauge fitting may be clogged. Sometimes when the pressure gauge is installed a piece of Teflon tape (used to seal the threads) can get lodged over the pressure gauge air port.

They call it a pressure switch the tube maybe lose and use a wrench to tighten you can buy the switches on eBay or online home depot

The electric motor probably has an automatic resetting overload. Most likely what is happening is that as the pressure increases so does the load on the motor. When it gets to a certain point the motor overload opens the circuit and the compressor stops and won't restart until it has cooled down and reset itself. The overload is sensitive to both current and temperature; it is inside the motor housing and may look something like this: The most likely cause of your problem is low voltage due to too small wire or too long of a wire run to the motor. Other things to check are dust and dirt in the motor not letting it cool properly, too much friction in the compressor, restriction in the compressor outlet, bad connections anywhere in the electrical system from the main breaker panel all the way to the motor including the pressure switch at the compressor; worn motor bearings [or compressor bearings]. How to Check an Electric Motor

You either cocked the motor on its bearings or you nicked one of the wired when reassembling it.

The usual problem with oil-less type compressor is the Teflon compression ring and cylinder will fail causing the problem that you describe. Easy to check. With cover removed, turn the pump until the piston is all the way up. With good light, check the condition of the cylinder near the top. If the cylinder looks scratched, air is leaking past cylinder and ring and pressure will not build up enough to reach cut-out. If cylinder looks smooth, then problem is head valve reeds or head gaskets. Indication of bad reeds or head gasket blown, is extremely hot head during fill cycle. Good luck

check your spring bolt in the power surply

Sound like your motor pulling to much current, and likely the relays oints are stuck together, you have to open it and seperate them and clean the contacts, and in no time you are going to need an new motor Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/tony_a41fa0b801734e2f

You have to change out the Seal and it will work fine..