Q: How to Service and Repair a Muffler and Tail Pipe with a Fire Suppression System on Mercury Grand Marquis?
A: Before servicing the muffler and tailpipe one must disable the fire suppression system to prevent severe injuries. Place the vehicle in NEUTRAL gear on the hoisting equipment. You should start by taking off the rear suspension lateral arms together with the rear coil springs. The installation process should include using 48 Nm (35 ft. lbs.) torque when tightening the 2 nuts and the clamp after removal. Thoroughly examine the isolator before conducting repairs for wear or damage and get a replacement if needed. Then detach it. You should detach the isolator by turning the muffler and tailpipe assembly counterclockwise around the rear axle. Workers should install new exhaust fasteners without early engagement until the entire assembly is in place before they alternate torque application to the specified parameters until reaching 33 Nm (24 ft. lbs.) final torque. Vehicle owners must activate a fire suppression system function after installation completion yet they must follow safety warning procedures for preventable serious personal injuries while doing so.