4x4 Posi Loc Kit Install for the Jeep Dana 30 CAD Axle
Your Dana 30 Central Axle Disconnect (CAD) needs a more reliable shifting mechanism
As the AMC era of Jeep began to phase into the Chrysler generation, along with it came the Center Axle Disconnect (CAD) Dana 30 axle offering shift-on-the-fly four-wheel drive. No longer would Jeep owners have to climb out of their Jeep to engage manual locking hubs. The new Dana 30 CAD axle featured a vacuum-actuated shift mechanism that was integrated into the front axle housing, and while it was perfectly good in almost all cases, it gained a reputation as being a very weak link in the chain. A simple upgrade from 4x4 Posi-Lok can fix that problem.
Installing a 4x4 Posi-Lok system replaces the vacuum actuator with a mechanical cable operated setup that can be operated from inside the cab. A pull of the 4x4 Posi-Lok cable connects the right front axle to the intermediate shaft using the shift collar and fork, and 4WD is engaged. The system also works well with lockers. When the front axle is locked, you can disengage the passenger side in order to make turns without wheel hop. Best of all, replacing the factory Dana 30 CAD system with a 4x4 Posi-Lok offered us a little peace of mind. Here's how the installation went.