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Pelican Technical Article:

Engine Cover Removal

Steve Vernon

Time:

10 minutes10 mins

Tab:

$0

Talent:

*

Tools:

Hands

Applicable Models:

Mercedes-Benz C350 (2008-15)
Mercedes-Benz GLK350 (2010-15)

Hot Tip:

Wiggle and pull at the same time

Performance Gain:

Access to the engine systems

Complementary Modification:

Change cabin air filter

There are two engine covers on the C350 along with two air ducts that you will need to remove to perform just about any work on the motor. Removal is simple and easy and needs no tools other than your hands.

Note: On the 2013 C300 4Matic you will need to remove the engine cover, vacuum line bracket and air ducts. There is also sound insulation that has to come off--start by unclipping and removing the air filter, then the top cover and ducts. 

With the hood open you can see the two engine covers: the front one (red arrow) that comes off for just about any job, and the rear one (yellow arrow) which also contains the air filters.
Figure 1

With the hood open you can see the two engine covers: the front one (red arrow) that comes off for just about any job, and the rear one (yellow arrow) which also contains the air filters. There are also two air ducts that you will need to remove to work on the front of the engine (green arrows).

To remove the front cover simply grasp it at the front and lift it straight up (red arrow).
Figure 2

To remove the front cover simply grasp it at the front and lift it straight up (red arrow).

There are two plastic knobs on the front of the cover (red arrow).
Figure 3

There are two plastic knobs on the front of the cover (red arrow).

There are two metal clips on the rear (red arrow).
Figure 4

There are two metal clips on the rear (red arrow). These clips can weaken over time and can easily be replaced just by pulling them off and pushing new ones on.

This photo illustrates where the front plastic knobs sit in the engine (red arrows) and where the rear clips attach to the rear cover (yellow arrows).
Figure 5

This photo illustrates where the front plastic knobs sit in the engine (red arrows) and where the rear clips attach to the rear cover (yellow arrows). The center rear clip is made of plastic. You can remove the two air ducts with the front cover in place if you need to (green arrows).

To remove the ducts compress the plastic duct towards the front of the car (red arrow) and slide it off the rear engine cover.
Figure 6

To remove the ducts compress the plastic duct towards the front of the car (red arrow) and slide it off the rear engine cover. These are just friction fits and do not have fasteners.

With the duct off the rear simply pull it off the plastic piece on the front (red arrow) and remove it from the engine.
Figure 7

With the duct off the rear simply pull it off the plastic piece on the front (red arrow) and remove it from the engine.

To remove the rear cover/air filter housing grasp it in the center and pull it straight up (red arrow).
Figure 8

To remove the rear cover/air filter housing grasp it in the center and pull it straight up (red arrow). You do not need to remove the vacuum line (yellow arrow) on the left side, as the cover will come off with it in place.

Separate the air hose on the front right side of the cover (red arrow) before completely removing the cover.
Figure 9

Separate the air hose on the front right side of the cover (red arrow) before completely removing the cover.

With the cover removed and turned upside down you can see the four clips (red arrows) that hold the cover/air filters in place.
Figure 10

With the cover removed and turned upside down you can see the four clips (red arrows) that hold the cover/air filters in place. Installation is the reverse of removal .




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Comments and Suggestions:
Ashestexas Comments: Hi, I'm trying to change my spark plugs on a 2013 c300 4matic and cannot figure out how to take off the cover towards the window. The one pictured here is different than mine. Any ideas?
October 5, 2016
  Followup from the Pelican Staff: On your model the engine cover, vacuum line bracket and air ducts have to come off. Then I recall there being sound insulation that has to come off. Start by unclipping and removing the air filter, then the top cover and the ducts. - Nick at Pelican Parts  
Brandon Comments: What is the part number for the metal clips referenced in this tutorial? Do you carry them?
February 22, 2016
  Followup from the Pelican Staff: I believe spring clips. I am not sure if they are available separately. Give our parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need.
- Nick at Pelican Parts
 

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Page last updated: Mon 1/16/2017 02:56:24 AM