RIDGID GP90135 User Manual (English)

Questions and Answers:

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ywashingtonAug 14, 2025
How to fix low discharge pressure on my RIDGID GP90135?
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  Michael KeithAug 14, 2025
  To troubleshoot low discharge pressure in your RIDGID Air Compressor, start by listening for air leaks and applying a soap solution to fittings and connections to identify leaks. Tighten or replace any leaking components. Also, inspect for broken or weak valves, and replace any defective parts, ensuring you use a new head gasket upon reassembly. Check and clean the air filter, adjust the belt tension if belts are slipping, and replace any blown gaskets. Finally, low compression due to worn rings and cylinder walls may require replacing the rings, cylinders, and pistons.
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ronaldtrujilloAug 17, 2025
Why is my RIDGID Air Compressor discharge pressure low?
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  Michael TaylorAug 17, 2025
  If your RIDGID Air Compressor has low discharge pressure, several factors could be the cause. First, listen for air leaks and apply a soap solution to fittings and connections to identify and tighten or replace any leaking components. Also, inspect for valve breakage or damage, replacing defective parts as needed. Ensure the air intake isn't restricted by cleaning the air filter element. Check for slipping belts and realign the engine pulley with the flywheel, tightening the engine clamping bolts. Replace any blown gaskets found upon inspection. Lastly, low compression due to worn rings and cylinder walls may require replacing the rings, cylinders, and pistons.
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Randall StephensonAug 21, 2025
Why is my RIDGID GP90135 overheating?
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  Amy RoseAug 21, 2025
  If your RIDGID Air Compressor is overheating, first ensure it has proper ventilation by relocating it to an area with cool, clean, dry, and well-circulated air. Also, clean the cooling surfaces of both the pump and the motor or engine.
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Savannah WhiteAug 25, 2025
What to do if my RIDGID Air Compressor unit stalls?
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  Austin CunninghamAug 25, 2025
  If your RIDGID Air Compressor unit stalls, you should first increase the engine idle (refer to the engine manual for details). Check the oil level and fill if necessary. Also, the issue may be improper lubrication (refer to the LUBRICATION section under Assembly). Finally, consider replacing a defective unloader valve.
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Thomas GreenAug 28, 2025
What to do if my RIDGID GP90135 Air Compressor is overheating?
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  Ashley PaulAug 28, 2025
  If your RIDGID Air Compressor is overheating, it could be due to poor ventilation. Relocate the compressor to an area with ample cool, clean, dry, and well-circulated air. Another cause could be dirty cooling surfaces, so clean the cooling surfaces of the pump and motor/engine.
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Mark McdanielAug 31, 2025
How to fix excessive noise (knocking) in my RIDGID GP90135?
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  Lisa SmithAug 31, 2025
  If your RIDGID Air Compressor is making excessive noise (knocking), start by checking if the engine or compressor pulley is loose and tighten the pulley clamp bolts and set-screws. Also, check the oil level in the crankcase; if it's low, inspect for possible damage to the bearings. Dirty oil can also cause excessive wear. If the noise persists, the connecting rod or piston pin bushing may be worn, requiring replacement.
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Jacob BernardSep 3, 2025
Why does my RIDGID GP90135 Air Compressor have excessive belt wear?
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  James WhitakerSep 3, 2025
  Excessive belt wear on your RIDGID Air Compressor can be addressed by: 1. Realigning the engine pulley with the compressor pulley. 2. Adjusting belt tension (refer to the Drive Belt Section). 3. Checking for worn crankshaft, keyway, or pulley bore and bent pulleys or crankshafts.
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Mrs. Megan MaldonadoSep 6, 2025
What causes excessive noise (knocking) in my RIDGID Air Compressor?
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  Victoria Rodriguez DDSSep 7, 2025
  Excessive knocking noise in your RIDGID Air Compressor may be due to loose engine or compressor pulleys, so tighten the pulley clamp bolts and set-screws. Check the oil level in the crankcase and look for potential bearing damage; dirty oil can cause excessive wear. Also, inspect for a worn connecting rod or piston pin bushing and replace them if necessary.
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Ashley RoweSep 9, 2025
Why is there oil in the discharge air of my RIDGID GP90135?
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  Richard AbbottSep 10, 2025
  If you find oil in the discharge air of your RIDGID Air Compressor, it could be due to several reasons. Worn piston rings may be the cause, requiring replacement with new rings. Check for a restricted compressor air intake by cleaning the filter and inspecting the intake system. A restricted breather can also cause this issue, so clean and check it for free operation. Ensure that there is no excessive oil in the compressor; if so, drain it to the full level. Using the wrong oil viscosity can also lead to this problem, so use SAE 30 (ISO 100) non-detergent compressor oil. Finally, a connecting rod out of alignment may be the cause, requiring replacement.