Typically, steel is rated by the SAE or the ASM according to its particular elements. Proven and standardized “recipes” are issued a four-digit number. The first two signify the steel group, i.e. carbon steel, nickel-chromium-molybdenum steel, etc. The second two indicate the carbon content in hundredths of a percent, which is variable according to end use. 10XX, 11XX, 12XX, 15XX = The...
A demonstration on how to properly measure a semi-float rear axle shaft. How to identify ring & pinion gear ratio.
It may sound silly, but there are many things to consider and lots of data to collect prior to picking up the phone to find rearend parts. Unlike engine or suspension parts, rearend parts are not easy to look up, and can vary greatly on any vehicle make/model. Just because it has a specific engine size or transmission type does not mean that the vehicle uses one specific gear ratio. Vehicle...
Setting up a differential involves a lot of measuring, disassembly, reassembly, adjusting, and re-measuring. Aside from the tools needed to assemble and disassemble a differential, a good mechanic needs the right tools for making accurate measurements. Having the right tools makes the job far easier, while the wrong tools can make the job miserable, if not impossible. When working on a...
Many things can go wrong inside a differential. Although the hints are often subtle, most impending failures give fair warning in the form of noise. Read this article in Español Several situations can create ring-and-pinion noise. If the gears have been quiet and begin to howl, they are probably worn or wearing. If the gears howl during deceleration only, it’s...
So you don’t have the time to work on your own differential? Who can you trust to do a good job? Whenever I take my truck to someone for repairs, I always cross my fingers, even if I know them. The automotive repair industry has a bad reputation for a reason, mostly because there are many unqualified or corrupt people in the industry. Now don’t send me a bunch of letters defending the trade. I...
Part of our USA Standard Gear product unboxing series.
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