Q: How to remove and install a Air Filter Box on Lincoln Navigator?
A: To detach the cable from the negative terminal of the battery, remove the accelerator control protection shield. Disconnect the IAT sensor and the MAF sensor, the PCV hose, and the IAC inlet hose. Remove the air filter box outlet tube mounting bolts and the air filter box clamp from the assembly. Lift the open end of the air filter box assembly and remove it. Installation is the reverse of removal.