Unpacking

When unpacking, please compare with parts list to be sure that all parts are included.

If any parts are missing or broken, please call Harbor Freight Tools at the number on the cover of this manual.

Assembly

1.Install all three Base Bolts (F) into the Base

(E) approximately 1/2 way.These bolts will be used to level the Balancer on your floor. NOTE: For best results, you should use the Balancer on a hard level surface, such as a cement garage floor.

2.Thread one of the Nuts (D) approximately 2” up the Shaft (B). Insert the Shaft (B) through the hole in the Base (E) as in the assembly diagram. Thread the second Nut (D) onto the shaft, and tighten to lock the Shaft (B) onto the Base (E).

3.Place the Hub Support (C) onto the Shaft (B).

4.Place the Bubble Level (A) onto the top of the Hub Support (C).

5.Level the Wheel Balancer relative to your floor by adjusting the Base Bolts (F) up or down, until the bubble in the Bubble Level (A) is centered in the bullseye marked in the center of the level.

SKU 91939

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Harbor Freight Tools 91939 operating instructions Unpacking, Assembly

91939 specifications

Harbor Freight Tools 91939 is a vibration meter designed for users who require an efficient and effective way to measure vibration levels in machinery and equipment. This handheld device is particularly beneficial in maintenance, troubleshooting, and predictive maintenance procedures. Its design and functionality make it a valuable tool for professionals in various industries, including manufacturing, automotive, and HVAC.

One of the standout features of the Harbor Freight Tools 91939 is its digital display, which provides clear and easy-to-read measurements. The large LCD screen allows users to quickly interpret vibration levels, helping them identify potential issues before they escalate into costly repairs. The device measures vibration in both velocity (mm/s) and acceleration (m/s²), giving users a versatile tool for different applications.

Another significant feature is its wide measuring range, which allows users to capture a variety of vibration levels with precision. The Harbor Freight 91939 can measure vibration frequencies from low to high, making it suitable for detecting imbalances, misalignments, and bearing problems in rotating machinery. This flexibility ensures that users can troubleshoot a broad range of equipment effectively.

Durability and ease of use are also hallmarks of the Harbor Freight Tools 91939. Constructed with robust materials, this vibration meter is built to withstand the rigors of everyday use in industrial settings. The ergonomic design ensures that it is comfortable to hold, allowing users to perform measurements effortlessly over extended periods.

In addition to its primary measurement capabilities, the Harbor Freight 91939 often incorporates features like data storage, which enables users to save readings for later analysis, making it an excellent tool for tracking maintenance over time. Some models might also have the ability to connect to computers for more advanced data analysis and reporting options.

With its blend of affordability, reliability, and multifunctionality, the Harbor Freight Tools 91939 appeals to both professionals and DIY enthusiasts who are serious about equipment care. Understanding vibration levels is vital in many industries, and having a tool that provides accurate readings enhances preventive maintenance efforts, ultimately improving efficiency and equipment longevity. Whether used in a commercial workshop or a home garage, the Harbor Freight Tools 91939 stands out as a must-have instrument for anyone needing to measure and monitor vibration levels effectively.