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Replacing the Exhaust Manifold Gaskets
 
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Pelican Technical Article:

Replacing the Exhaust Manifold Gaskets

Mike Holloway

Tools:

12mm wrench, 13mm socket

Applicable Models:

Mercedes-Benz R107 (1975-86)

Parts Required:

Exhaust manifold gasket Pelican Part #116-142-02-80-MBZ (OEM) or #116-142-02-80-M30

Hot Tip:

Use penetrating oil

Performance Gain:

Less noise and vibration

Complementary Modification:

Replace exhaust manifold

If you happen to notice a vibration or clattering when driving your car, it maybe a faulty exhaust manifold. Replacing the gaskets is relatively 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 them to soak for a few hours.

In order to get at the exhaust manifold gasket, it may be needed to remove the air-box as well as the fluid reservoirs.

Before you do any work on your car it is important that you wear safety glasses and work gloves. 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. Never work on your vehicle if you feel the task is beyond your ability. Always disconnect the battery before working on your car.

The exhaust manifold has a shield that will have to be removed.
Figure 1

The exhaust manifold has a shield that will have to be removed.

Using a 12mm socket and extension, loosen and remove the bolts holding the shield down.
Figure 2

Using a 12mm socket and extension, loosen and remove the bolts holding the shield down.

The shield is now free to be replaced or at least cleaned.
Figure 3

The shield is now free to be replaced or at least cleaned.

Using an open-end 13mm wrench, remove the bolts that hold the manifold.
Figure 4

Using an open-end 13mm wrench, remove the bolts that hold the manifold. It won't be possible to use a socket wrench. You will want to use plenty of penetrating oil.

After the exhaust manifold bolts are loosened move on to under the car.
Figure 5

After the exhaust manifold bolts are loosened move on to under the car. Using a 12mm open-ended wrench, loosen and remove the bolts holding the manifold pipe to the exhaust pipe.

While the exhaust manifold itself maybe fine, the gaskets will have to be replaced. Installation is the reversal of removal. 


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Page last updated: Fri 12/9/2016 02:54:36 AM