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Pelican Technical Article:

Exhaust Line and Muffler Replacement

Mike Holloway

Tools:

12mm wrench, 12mm socket wrench, extension, flathead screwdriver or pry bar, floor jack, jack stands, wheel chocks, safety glasses, torque wrench

Applicable Models:

Mercedes-Benz 450SL (1973-80)

Parts Required:

Exhaust Line, muffler Pelican Part # 107-490-13-15-M125

Hot Tip:

Use penetrating oil and a jack stand to support the exhaust line

Performance Gain:

Functioning exhaust system

Complementary Modification:

Install chrome exhaust tips for a bit of flash

If you happen to notice a vibration of clattering when you drive your car, it maybe a faulty exhaust line. Replacing the muffler is easy compared to other jobs. You may find that the nuts holding the studs may not loosen as easily as you would like. Use plenty of penetrating oil on the nuts, allowing the fasteners to soak for a few hours.

In order to get at the exhaust line, jack up your car and place it on jack stands. While you do not have to jack up the car it will make it easier. Refer to the safely jacking your 450SL article for assistance.

Before you do any work on your car it is important that you wear safety glasses, work gloves and dispose of all fluids in a safe manner. If you have to jack up your car, make sure to use jack stands and chock your wheels as well as applying the parking brake. Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. If you're working with the electrical system, disconnect the battery before beginning. Recycle parts, packaging and fluids when possible. Never work on your vehicle if you feel the task is beyond your ability. Always wear eye and hand protection. Disconnect the battery before working on your car.

Using a 12mm wrench, loosen and remove the bolts that hold the exhaust line located past the exhaust manifold.
Figure 1

Using a 12mm wrench, loosen and remove the bolts that hold the exhaust line located past the exhaust manifold. Removing the line in pieces will make removal easy.

Using a 12mm wrench, loosen and remove the bolts that hold the exhaust line located past the oxygen sensor.
Figure 2

Using a 12mm wrench, loosen and remove the bolts that hold the exhaust line located past the oxygen sensor.

Using a 12mm socket, loosen and remove the bolt holding the exhaust line to the frame.
Figure 3

Using a 12mm socket, loosen and remove the bolt holding the exhaust line to the frame.

Using a small pry bar, loosen the exhaust line from the frame by prying the rubber grommet.
Figure 4

Using a small pry bar, loosen the exhaust line from the frame by prying the rubber grommet.  

Use a 12mm socket and extension to loosen and remove the bolt holding the muffler.
Figure 5

Use a 12mm socket and extension to loosen and remove the bolt holding the muffler. 
Installation is the opposite of removal.



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Page last updated: Fri 12/9/2016 02:56:25 AM