The ARB Air Locker Shim Driver (Part Number: 0770004) is a professional-grade automotive service tool specifically designed for installing and servicing common shim pre-loaded differentials. Ensuring sufficient carrier bearing pre-load is critical, as insufficient pre-load can lead to premature bearing and ring and pinion failure in all differentials, potentially causing oil and air locker leakage issues. Many Salisbury-style axle assemblies, such as the Dana Spicer Model 44, require these pre-load steel shims to be carefully tapped into place during the setup process.
Tapping metal shims into a tight space from just one point on the outside edge often results in damage to the shim, making it unusable and increasing installation cost and labor time. This specialized arb shim driver set addresses this common issue.
Differential Shim Installation Solution
As a component of ARB’s Air Locker Tools lineup, this air locker shim driver set (0770004) is engineered for precision and durability.
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