ARB Air Locker Differential Spreader is a tool designed for professional differential installation. It is particularly useful for Salisbury style axle assemblies (like Dana Spicer model 44) where achieving the correct carrier bearing pre-load during setup is crucial. Original equipment manufacturers (OEMs) recommend a method that involves stretching the differential housing (also called the pumpkin) to allow for the addition of shims and create the pre-load. Many manufacturers include spreader sockets in the housing to facilitate this process. Insufficient pre-load can lead to bearing failure, ring and pinion issues, and even oil or air leaks in an Air Locker Differential. This ARB tool provides a quick and effective way to pre-load these differentials during servicing or installation. Features & Benefits• Allows the housing to be stretched in a safe and controllable way which reduces the risk of causing permanent damage to the housing• Pre-drilled with a hole pattern that suits most of the commonly available axle types• Suited to pre-loading shim adjusted Banjo style axle assemblies• Comes in a durable carry case with a dedicated powder coated parts tray for easy storage and transport WarrantyInstallation Instructions
