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Ring & Pinion Gear Break-In Procedure

Rear End Gear Break-In

ALL new ring & pinion gear sets must be properly broken in to prevent damage & premature failure.

Improper gear break-in procedures may cause overloading and overheating of the ring and pinion gears as well as break down of the gear oil. Failure to properly break-in a new gear set can be identified by inspection, and may void the manufacturer’s warranty.

If you’re replacing the ring & pinion gear set, don’t plan on heading up over that mountain pass or hooking up that heavy trailer just yet….. Following the simple steps outlined below before you head out can prevent potential noise issues or gear damage.

After driving the first 15-20 miles at around 60 mph, it is best to stop and let the differential cool completely. Maintaining a speed below 60 mph and driving conservatively for the first 100 miles is also advised. The gear oil should be changed after 500 miles. We recommend that you drive at least 500 miles before any heavy use or towing. During the first 45 miles of actual towing, only drive 10-15 miles at a time before stopping to let the differential cool.

These steps are necessary to prevent damage to the new ring & pinion gear. Any heavy use or overloading of the differential during the first 500 miles may cause irreparable damage to the gear set.

Again, IMPROPER BREAK-IN CAN BE IDENTIFIED BY INSPECTION AND MAY VOID THE MANUFACTURER’S WARRANTY.

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Our LIVE Differential Parts Experts are ready to take your call Monday thru Friday from 8AM to 5PM.

(800) 510-0950

Most orders received before 4PM Pacific Standard Time will be shipped out the SAME DAY, with next day delivery via ground service to most of the West Coast!
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Application Guides

Differential Parts Application Guide Use our Application Guides to find parts that are available for your vehicle, Including Ring & Pinion Gear Sets, Installation Kits, Positraction and Locking Differentials, Internal Parts, Axle Shafts and more.

2015 Product Catalog

West Coast Differentials Ring Pinion Axles Rearend Parts Click the thumbnail above to view or download our current catalog. Download a PDF copy and save it on your computer for offline viewing or see the Flipbook version online.