NOTE: The actual torque delivered at each of the eight settings will depend on the air pressure supplied to the tool. We suggest that you test the actual torque by tightening a nut or bolt at each setting, then observing the resultant torque by using a mechanical torque wrench (not supplied).

7.If installing a nut or bolt, set it as tight as possible by hand before tightening with the Air Impact Wrench.

8.Place the socket (not included) over the fastener.

9.Grip the Air Impact Wrench tightly with both hands,

and rock the Throttle Lever “Butterfly” (5) to the

Regulator (38)

right.The tool will operate and tighten the fastener.

 

10.When the fastener is tightened, release the Throttle Lever “Butterfly” (5) , and remove the tool from the fastener.

11.If possible, check the actual torque applied to the fastener with a mechanical torque wrench (not supplied).

12.If removing a fastener, grip the Air Impact Wrench tightly with both hands, and rock the Throttle Lever “Butterfly” (5) to the left. The tool will operate and loosen the fastener (assuming that the fastener is a standard right-hand thread). NOTE: Always check to be sure of the thread direction of any fastener before attempting to install or remove it. If the fastener is a left-hand thread, rock the Throttle Lever “Butterfly” (5) to the right for removal.

WARNING: If the fastener will not come off, first check to be sure of the direction of the thread. If you have the thread direction correct and the fas- tener will not come off, DO NOT INCREASE THE AIR PRESSURE to the tool beyond 90 psi. This may damage the tool.You may have to use penetrating oil, heat, or a mechanical wrench to remove the fastener.

13.When you are done using this tool, turn off the air compressor, and disconnect the air hose. Put the Air Impact Wrench away in its proper storage place.

Maintenance

1.Your Air Impact Wrench should be kept clean and dry.

2.When not in use, store your tool in a suitable place where it will not be exposed to water, corrosive materials, or undue banging around.

3.If you are not using an in-line oiler, you should inject a few drops of pneumatic oil into the air inlet of the tool and the Oiler Screw (3) port after every hour of continuous use.

4.If your tool loses power, or you notice air leaks, take it to a certified technician for service.

5.All repairs to this tool should be performed by a qualified service technician.

SKU 37730

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Harbor Freight Tools 37730 operating instructions Maintenance, Regulator