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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
If it's pumping up to 135 psi, shutting off and then restarts at the same pressure point since it was new, the pressure switch may have been set low at the factory. I don't know which model you have but most pressure switches have directions inside their cover as to how to adjust the cut-out and cut-in pressures. Be careful doing this, overpressuring the tank is dangerous. There is an adjustment screw or bolt that changes the pressure on the switch spring. Some pressure switches have two screws, one for cut-in and one for cut-out pressure. A few have one that adjust both pressures. If you do adjust the cut-in/cut-out levels, do it slowly and cycle the motor a couple times between each adjustment to see where it turns off and on. If the compressor is doing what you want it to, only pumping to 135 psi, it will live longer than if you adjust it up to 150 psi. Those last 15 psi of air are hard to get and will mean the motor will be running longer and more heat will be building up in the head.
That is an extremely high pressure. I would firstly check to make sure that THAT is what you need, then MOST compressors have a regulator where you can adjust the pressure required. It is not so much the pressure you need as the STORAGE of air that you need for a pressure that high. MOST tanks are around the 20 or so litre. To utilise a tool requiring the pressure of 75PSI I suspect you would need a tank of somewhere around the 2-300 litre size or maybe even bigger. But first just make sure that you DO need the 75PSI you mentioned.
most air compressors have a pressure switch on them.this is used to
adjust the desired pressure you want to reach.the second adjustment is
for setting the pressure for when you want it to cycle back on.lets say
you want it to run at 100 PSI.one of your adjustment in this box will
control this , when you are using the unit and the pressure starts to
drop to lets say 90 PSI you can adjust the unit to cycle
this sounds like a bad pressure switch.if the unit is not shutting off at the same pressure each time this would be the cause.2 if the pressure is not unloading the air pressure on the compressor side of the unit it will cause the unit to struggle when it starts a cycle because the piston is under a load .how this works is say the unit starts from 0 psi when it get to the desired pressure you have it set on the unit kicks off . the other adjustment most units have on them is what pressure to cycle back on.so when the unit reaches say 100 pounds ,it kicks off and bleeds the air off the compressor side so when it starts back up it wont start up with pressure on the piston.
yes most air compressors have a pressure switch on them.this is used to adjust the desired pressure you want to reach.the second adjustment is for setting the pressure for when you want it to cycle back on.lets say you want it to run at 100 PSI.one of your adjustment in this box will control this , when you are using the unit and the pressure starts to drop to lets say 90 PSI you can adjust the unit to cycle back on.