I built this tool to make it easier to install or remove a Ford eight- or nine-inch gearset. All of the components were found in my scrap bin but you can use new ones. It mounts to a floor jack and allows the carrier to be fitted without much physical effort. It also adjusts to match the pinion angle of the axle housing so the carrier slips on the studs easily.
Start with a 10 inch barn hinge having two equal length halves. Measure the hole in your floor jack after removing the lifting pad. Cut a piece of round stock or heavy wall tubing to the same length and diameter as the mounting stud of your jack pad. Weld this piece to the bottom of the barn hinge at a point that has the hinge pivot just beyond the edge of the jack lifting pad mount.
Next, fabricate the curved mount from a 1/2 inch square bar. The center will be flat and the ends will be bent upward to capture the gear carrier and prevent sideways motion or rotation. Weld this piece to the top of the barn hinge about 1 inch from the pivot.
The upright to hold the yoke mounts about 7 inches from the curved mount. I used a recycled head bolt 7/16x45/8 inches, welded to the top of the hinge. The sleeve that fits in the yoke is 1 inch O.D. tubing with nuts welded inside to allow up or down adjustment. It's cut to length to fit in the yoke.
The angle adjuster is a 3/8x1 1/2 inch bolt and nut. Drill a hole midway between the curved mount and the upright through both hinge halves, install the bolt and nut to control the distance between the hinge halves.
To remove a gearset, have your vehicle secured on jackstands. Remove the driveshaft from the rear axle yoke, drain the oil, and remove all but two of the carrier mounting nuts. Remove the lifting pad from your jack and replace it with the carrier tool. Place the jack with the tool under the carrier then use the U-joint U-bolts to hold the tool upright to the yoke. Now remove the last two nuts and pry the carrier away from the axle housing. As it clears the mounting studs, the carrier will be supported by the tool and the jack.
To reinstall the gearset or install a new one, lift the carrier to the proper height with the jack and roll it toward the mounting flange. If the carrier is not parallel to the flange, adjust the angle with the bolt in the middle of the hinge. Now slide the carrier onto the studs and capture it with a couple of nuts before removing the tool. Complete the installation as normal. For a quicker change during a race, build two tools and mount one to the new gearset and one to the set being removed.
'26 Ford Roadster
Bonneville Salt Flats
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