LIMITED SLIP DIFFERENTIAL TO FULL-LOCK… AN AUBURN GEAR EXCLUSIVE.

 

This Select-A-Loc® model locks the axle shafts to the diff housing to transfer torque directly from the case, not through the gears.

 

This electronically-actuated differential operates as a limited slip differential until placed in full-lock mode. Select-A-Loc’s exclusive design promises exceptional traction for power sport enthusiasts and anyone driving in extreme conditions.

IMPORTANT NOTE: Select-A-Loc® is NOT recommended for use with front axles that feature an “inter-axle disconnect.”

 

How it Works… Select-A-Loc® Limited Slip to Lock

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Select-A-Loc® is a selectable traction device featuring an ON/OFF switch mounted near the driver.

When OFF, the clutch pack (7), located behind the side gear (6), activates the limited-slip mode. As torque increases, the separating forces within the differential gears increase, causing the clutch pack to be compressed, in turn providing bias torque to the high traction wheel.

When the switch is turned ON to activate the locking mode, current is sent to the electromagnetic coil (8). The coil is retained by a clip that fits over one of the bearing cap bolts, making it non-rotational.

The coil rides on a ball bearing (9), and the ball bearings spin with the differential case (10). The coil creates a magnetic flux so that the pilot cone (1) is pulled into engagement with the differential case (10). This frictional engagement causes the bearing balls (2) to ride up on a ramp machined into the side gear (3). This radial travel of the balls (2) also causes lateral movement of the side gear (3).

The side gear lateral movement (3) applies a force onto the center block (4). The center block has an elongated hole that the center pin (5) fits through, allowing it to float. The center block also applies force to the opposite side gear (6) to compress the clutch pack (7) and provides the vehicle with a solid axle assembly that transfers 100% of the torque to both wheels, delivering maximum traction. NOTE: The side gear (3) is not included in the Master Install Kit. However, the pinion gears (*) are included.

 

Electronic Activation

The Select-A-Loc® easily activates the locker mode by simply turning on the switch mounted inside the vehicle cab. When turned off, the differential works as a regular limited slip differential, responding automatically when torque is applied.

 

Street-Worthy!

Select-A-Loc® is very much built for the street, providing smooth, quiet operation. In fact, Auburn Gear differentials were used as original equipment in the first muscle cars. Plus, they are aggressive enough to be used in other performance applications. However, when the Select-A-Loc® is in full-locker mode, you may experience some under or push steering.

Case Material Optimized for Durability in Extreme Conditions Auburn uses different grades of Nodular Ductile Iron case material depending on the application. Original equipment manufacturers typically use lower cost, less durable iron case material.

Hardened Gear Material Minimizes Wear High strength hardened steel is used for all of the gears in all Select-A-Loc® applications. This material minimizes wear, adding long-lasting durability to moving parts and increases driver confidence in extreme conditions.

IMPORTANT – Auburn differentials are built with strength and durability in mind. We do not reduce material to achieve weight savings that compromise strength. Auburn differentials are specifically designed to provide confidence to enthusiasts who are upgrading their vehicles to put more power through the driveline and more torque through the axles.