Auburn Gear Mini-Spool Installation Instructions

The Auburn Gear mini-spools are designed to be “c” lock compatible, but there are certain applications where “c” lock eliminator kits must be used. Any ring and pinion ratio that does not allow the differential cross pin to be completely removed (due to ring gear thickness) must use a “c” lock eliminator kit. For safety reasons, Auburn Gear highly recommends the use of “c” lock eliminator kits which will retain the axle shaft in the event of axle failure. The Auburn Gear mini-spool replaces the differential side gears and pinion gears of the stock open differential with a device that couples both axle shafts together allowing maximum torque to both wheels.

The mini spool is intended for off-road use only and should not be used on public roads.
I. Integral Carrier Axles
1) Raise and support vehicle.
2) Remove wheels and brake drums.
3) Drain lubricant by removing cover.
4) Remove differential pinion shaft lock screw and pinion shaft.
5) Remove “c” clips by pushing axle shafts toward center, then remove axle shafts. NOTE: If the pinion shaft cannot be removed due to the ring gear, the differential will have to be removed and the ring gear removed. This application will require a “c” lock eliminator kit. See vehicle service manual for differential removal procedure.
6) Remove differential pinion gears by rotating them to the window in the differential case.
7) Remove side gears.
8) Install “dummy” side gears.
9) Insert axle shafts into “dummy” side gears.
10) Slide “c” lock into the slot in the “dummy” side gear (material may need to be removed from the “c” lock in order for it to fit the slot) and onto the axle shaft. Push axle shaft outward and repeat for other axle.

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