AAM 9.25 Front Axle Inner Seal Installer Set, 8885B

This installer set does the job of the 8885, 8885A and 8885B special tools: it drives the inner axle shaft seals into the American Axle 9 1/4 inch front differential used on Dodge and Ram 1500, 2500 and 3500 4x4 trucks, and it seats them to the proper depth in the housing.

The set is two steel installer cups and a two-piece hex spreader bar that threads together between them. Working through the cover opening with the carrier out, you place a new seal on each side, set the installer cups against the seals, and turn the bar by hand with wrenches to spread it. Both seals press in square and evenly at the same time instead of being tapped in at an angle with a punch.

Why it matters: a cocked or under-driven inner seal on the AAM 9.25 lets gear oil run out into the axle tubes and toward the hubs, and the leak often gets blamed on the outer seals. Seating them square and to depth with the correct tool is the fix.

Put extreme pressure lube on the faces of the installers and on the shoulders of the spreader bar to reduce friction. Turn it by hand only; do not run it with an impact or power tool.