If your tires are not the same size, then you will experience accelerated tire wear and also higher heat from the differential and locker resulting in a reduced life expectancy of all components. Keep in mind that both rear tires must measure the same height from the ground to the top of the tire in order for a locking differential to function properly.
REAR DIFF ZIP
Whenever possible always come to a complete stop before engaging or disengaging a selectable locker, such as a Zip Air Locker, ARB Air Locker, or Toyota Electric Locker. This is caused by multiple factors including the mechanism used to engage and disengage, load on each axle shaft, and amount of throttle being applied. Mechanical Locking differentials will bang and clunk during normal operation. In other words most of our customers will not be able to tell a difference, but due to their high strength you should expect them to run more noisy than stock gears. While this is more of a concern with well-insulated passenger cars, in our experience the increase of noise generated by oversized off-road tires more than overcomes any new noise from the differentials. Gear NoiseĪftermarket gears are primarily designed for strength and therefore are produced with specialized high strength alloys with less consideration to how quiet they will run. Using inexpensive oil first ensures that any excess metal generated during break-in will be flushed out and you can maximize the mileage of your more expensive synthetic oil in a cleaner environment. The reason for this is that debris will be created from the break-in process which will contaminate the gear oil. Tip: If you are going to use Synthetic oil you may want to start with inexpensive oil for the first 500 miles and then change to synthetic. The greatest damage results when a new ring & pinion has been run very hot before the gears are fully broken-in.Īny heavy use or overloading during the first 500 miles will cause irreparable damage to the gear set that can be determined by inspection of the gear set and will void the warranty. This may seem unnecessary but it is very easy to damage the differential by loading it before the gear set is completely broken in. This will remove any metal particles or phosphorus coating that has come from the new gear set and bearings. We highly recommend changing the oil after the first 500 miles.If you've already put in over 1,000 miles on the new differential, then the diff is already broken in.If you plan to do any towing following the initial 500 miles, then tow for a short distance (about 15 miles) and then stop to let the differential cool for 10-15 mins.Avoid heavy acceleration and don't do any towing during the first 500 miles.The gears run hotter than normal during the break-in process and require two or three heat-cycles to ensure proper performance and life expectancy.Repeat this process two or three times.After light use for the first 15-20 miles, stop and let the differential cool before proceeding any further.Please follow these guidelines to insure proper break-in: Any overloading or over-heating will cause the gear oil to break down and cause undue stress to the ring & pinion gears. All new gear sets require a break-in period to prevent damage from overheating.
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