Rev 07i

Maintenance

Warning: Before performing any maintenance to this machine, remove the line cord from the electrical outlet.

Removing the Chuck and Arbor

During this procedure, refer to the Pulley and Spindle Assembly Drawing.

1.Adjust the Depth Stop Collar to hold the Chuck at a depth of three inches.

2.Align the key holes in the Spindle Shaft (A13) and the Quill (A11) by turning the Chuck by hand.

3.Insert the Wedge Drift Key (A17) into the key holes.

4.Lightly tap the Wedge Drift Key with a rubber mallet until the Arbor (A14) falls out of the Spindle.

Place a bundled cloth or basket below the Chuck to catch it when it falls.

Installing the Chuck and Arbor

1.Using a clean cloth, wipe the tapered surfaces on the Arbor and Spindle.

2.Slide the Arbor and Chuck assembly up and into the Spindle.

At the same time, turn the assembly until the rectangular end of the Arbor slips into the notch on the Spindle.

Warning: In the previous step, if the Arbor is not properly set in the Spindle notch, it may fly out during operation.

3.Loosen the Arm Locking Handle (B16) and raise the Table about three inches below the Chuck.

4.Turn the Chuck sleeve clockwise to open the jaws completely.

5.Turn the Feed Handle counterclockwise and force the Chuck against the Table until the Arbor is secure.

Adjusting the Feed Handle Return Quill Spring

Caution: Wear a full face shield during this procedure.

1.Loosen the Depth Locking Screw.

2.Move the Chuck to its uppermost position.

3.Turn the Depth Stop Collar clockwise until it stops.

4.Tighten the Depth Locking Screw.

This will prevent the Chuck and Arbor assembly from dropping during Quill Spring adjustment.

5.Insert a screwdriver in the lower-front notch of the Quill Spring Cap (39).

Hold it in place and, using a wrench, remove the (outer) Hex Nut (38) only.

SKU 43378

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Harbor Freight Tools 43378 operating instructions Maintenance, Removing the Chuck and Arbor, Installing the Chuck and Arbor

43378, 16 speed floor drill press specifications

Harbor Freight Tools is renowned for providing high-quality tools at affordable prices, and their 16-speed floor drill press, model number 43378, is a prime example of their commitment to performance and value. Designed for both amateur and professional woodworkers, the 43378 model offers a versatile and robust solution for a variety of drilling tasks.

One of the standout features of the Harbor Freight 43378 is its 16-speed settings, which range from 580 to 3,050 RPM. This wide range allows users to select the optimal speed for their material, making it ideal for drilling through wood, metal, and plastics. The ability to adjust the speed is crucial for achieving precise results, and it provides the flexibility necessary to handle different projects with ease.

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The drill press also includes an easy-to-read digital display for monitoring speed settings, enhancing user convenience. The LED work light illuminates the work area, enabling users to see their projects clearly, especially in dimly lit environments.

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In summary, the Harbor Freight Tools 16-speed floor drill press, model 43378, is a powerful and versatile tool that meets the needs of various drilling applications. Its adjustable speeds, robust motor, and thoughtful safety features make it an excellent addition to any workshop, providing both enthusiasts and professionals with the capacity to complete their projects with precision and confidence. Whether for hobbyist projects or serious woodworking tasks, the 43378 stands out as a dependable choice in the realm of drill presses.