![]() The best way to remove some of the confusion about servicing differentials and avoid problems is by remembering the basics and by knowing a few tricks. And certain units need additives in the fluid in order to run properly after service while others absolutely do not.Įven if you know the make, model and year (along with tire size and options) that's often not enough to be sure exactly which differential you're dealing with and how to service it properly - and that can be frustrating and time consuming. Complicating things even further, rear axle fluid types might be incompatible with each other and with the seals involved, so guessing at the right fluid can be a very expensive mistake. However, even though rear differentials all have the same purpose, disassembly and maintenance requirements can vary widely even on seemingly identical vehicles. And even though different manufacturers have different ways of doing things, the operating principles involved and the internal components of rear differentials are always pretty much the same from vehicle to vehicle. ![]() True, differentials are very simple, straightforward units that haven't changed a whole lot over time. ![]() Rear differential service, for regular maintenance or for repair work such as replacing leaking seals, often involves removing rear axles and draining and replacing differential fluid.įrankly, I'm not all that lucky, so I've always had to be extra careful when working on axles and differentials to avoid problems and keep the work profitable. ![]() undercar rear differentials rear differential service repair shop training technician training A/C training automotive aftermarket Differentials haven't changed much, but here is what you need to know to stay on task. ![]()
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