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Differential Lubrication Services, Rebuild or Remanufactured Installations
Lehman's Automotive Services, Inc
Family owned and operated singe 1957

Let me tell you directly, it's very difficult to destroy a differential unit as the internals consist of a very rugged set of spiral-helical gearing.  The differentials purpose, on a rear wheel drive pick-up truck for example, is to elevate and transmit torque perpendicular from the transmission to the rear wheel axles.  Since the differential is a gear reduction, it also boost the torque by transmitting the engines power at a much lower rotational speed.  

For you enthusiast, torque is proportional to horsepower divided by rotational speed.  The engines horsepower is developed at high speed (2500 RPM's).  So at equivalent horsepower, through the differential, lowering the speed increases the torque to the wheel axles, or in laymen's terms, the available power.      

Since the differential operates using a gear reduction, it requires lubrication to operate.  Without proper lubrication,    premature failure can occur.  Be sure that lubing the differential is included in your normal yearly maintenance.  

As for other A-typical differential repairs, I've seen where the gears are completely destroyed (teeth are broken off).  Yes, it does happen from time to time.  No, it wasn't caused under a warranty failure.  As you can imagine the stories that come along with this A-typical damage can be very interesting. 

If you'd like to more more information about it, we'd be happy to provide you with a cost estimate and help to answer your questions.  Just give Keith Lehman a call.          


Lehman's Automotive Services, Inc. 
2837 Walnut St.| Harrisburg, PA 17103
Toll Free Phone: (717) 232-0900| Fax: (717) 232-xxxx 
Web Site: www.harrisburgpainspections.com

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