Finger operated trigger and textured grip allows added control, low noise exhaust adjusts 360° kee...Finger operated trigger and textured grip allows added control, low noise exhaust adjusts 360° keeping airflow away from the operator. This makes it ideal for working in engine bays or other places with restricted access. Specifications include: Free Speed: 180 RPM, Air Consumption: 4 CFM, Max Torque: 27 N-M, Ratchet Pawl: Single, Length: 200 mm, Air Inlet: 1/4", Air Pressure: 90 psi.
This guide is for mechanics, DIY enthusiasts, and anyone needing a compact and powerful air ratchet. The US PRO 1/4" Dr Stubby Air Ratchet Wrench (8590) offers enhanced control in tight spaces with its finger-operated trigger and textured grip. However, it requires a compatible air compressor for operation. This guide covers setup, usage, maintenance, and troubleshooting to help you get the most out of your air ratchet.
All features
Model Part Number
8590
Brand
us pro
Extended Product Information
FAQs
What type of air compressor is needed?
A compressor that can supply at least 4 CFM at 90 psi is recommended for optimal performance.
How do I lubricate the air ratchet?
Apply a few drops of air tool oil into the air inlet before each use.
What is the maximum torque?
The maximum torque is 27 N-M.
What is the free speed of the air ratchet?
The free speed is 180 RPM.
What is the length of the air ratchet?
The length is 200 mm.
What size air inlet does the ratchet have?
The air inlet is 1/4".
How do I adjust the exhaust?
The low noise exhaust adjusts 360° to direct airflow away from the operator.
Troubleshooting
Air ratchet not turning.
Check the air supply. Ensure the air compressor is turned on and supplying sufficient pressure (90 psi). Check the air hose connections for leaks. Add air tool oil into the air inlet.
Air ratchet is weak or has low power.
Ensure the air pressure is at 90 psi. Check for leaks in the air line. Lubricate the air motor with air tool oil. Check the air filter on your compressor and clean or replace it if necessary.
Air is leaking from the tool.
Check the connections for leaks. Tighten any loose fittings. Inspect the tool for damage and replace any worn or damaged components. Add air tool oil into the air inlet.
Pros and Cons
Pros
Compact size allows access to tight spaces.
Adjustable exhaust keeps air flow away from the operator.
Finger-operated trigger for precise control.
Textured grip enhances user comfort and control.
High free speed improves work efficiency.
Cons
Requires an air compressor for operation.
Air consumption of 4 CFM may require a larger compressor for continuous use.
Maximum torque may not be sufficient for extremely stubborn fasteners.
Regular lubrication is required for optimal performance.
Setup, Compatibility & Care
Air Compressor: Connect the air ratchet to a compatible air compressor, ensuring the compressor can deliver at least 4 CFM at 90 psi.
Air Line: Use a 1/4" air hose and connect it to the air inlet of the ratchet.
Lubrication: Before each use, apply a few drops of air tool oil into the air inlet to keep the tool running smoothly.
Air Pressure: Regulate the air pressure from your compressor to 90 psi for optimal performance.
Cleaning: After each use, wipe down the tool with a clean cloth. Avoid using harsh chemicals.
Storage: Store the air ratchet in a clean, dry place when not in use.