How to Install a Detroit EZ Locker

The Detroit EZ Locker is a brand of automatic locking locker that is designed to lock both wheels on the axle with power input. The EZ Locker permits a different variance in wheel speed while negotiating a turn even if torque is absent. It is designed to fit into an existing stock differential carrier and serves as a cheaper alternative to full-carrier lockers.



Before attempting to install a Detroit EZ Locker read and follow the manufacturer's instructions for removing the differential assembly from the axle, as the procedure will differ depending on the specific vehicle.

Instructions

1

Thoroughly coat the side gear thrust washers and four outer holes of the clutches with medium-weight grease. Insert a dowel pin into each of the outer holes in each clutch and place a spacer in each clutch with the larger hole out toward the clutch teeth.

2

Install a side gear with thrust washer into the ring gear side of the case. The side gear thrust washer should have the smooth side inside and be on the hub of each side gear.

3

Install the clutch/spacer assembly into the ring gear side of the differential case

and pair it with the side gear teeth. Then, push the spacer onto the side gear. Repeat on the other side.

4

Rotate the clutch until a slot is visible, and then rotate the other clutch until the cross pin hole is aligned. Push the dowel into the hole in the other clutch.

5

Assemble the spring and cap by placing the spring inside the cap. Then insert the spring and cap assembly, with the cap facing toward the dowel pin, through the slot in the clutch. Use a screwdriver or pick tool to compress and seat the spring in the hole. Repeat to produce the second spring and cap.

6

Check to be sure the spacers are seated against the side gears and not caught on the c-clips, then rotate the clutches to line up their cross pin holes with the mating holes in the differential case.

7

Insert the pinion shaft into the differential case between the clutch/spacers and through the axle shaft spacer block (if there is one). Position the shaft to accept its retaining pin and rotate the clutches and side gears to ensure a smooth fit.

8

Install the cross pin retaining device, if any, following the manufacturer's instructions.