1. Dropping in Detroit Lockers in the 2 1/2-ton third members will be the easiest locker install you will ever do. The carrier has to be taken apart, but then the Detroit Locker simply drops in and takes the place of the original spider gears. A note of caution: Out of the box the locker will be connected by a through bolt with a wing nut at one end. Do not unscrew the bolt until the locker is sitting in the carrier and you have the two halves back together!