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Fan and Shroud Replacement
 
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Pelican Technical Article:

Fan and Shroud Replacement

Tom Morr

Time:

2 hours2 hrs

Tab:

$150 to $300

Talent:

**

Tools:

10mm socket, flathead screwdriver,

Applicable Models:

Mercedes-Benz SLK230 (1998-04)

Parts Required:

New fan and or shroud

Hot Tip:

Work on a cold engine

Performance Gain:

Proper engine temps

Complementary Modification:

Coolant Flush

If your fan fails and needs replacing you will need to remove the fan and shroud together to perform this work. It is possible to remove the fan and shroud without disconnecting any of the water lines and removal of the shroud will give you more room to work on the front of the engine. If you are frustrated by the lack of room to replace the belts on the car you may want to remove the shroud to make the job easier.

From the top of the engine you will need to remove the two clips that hold the shroud to the radiator, the hose clip on the right side of the shroud and the two 10mm bolts that hold the overflow reservoir tank. From the bottom of the shroud you will need to unclip the hose, it just pulls out. You can do this from the top without removing the under tray. The shroud sits in two rubber grommets on the lower front cross member and are just a friction and gravity fit.

Use a screwdriver and unclip the hose on the right side.

At the front upper cross member there are four clips: two for the shroud and two for the radiator. Use a flathead screwdriver and lift out the two clips for the shroud.

Remove the two 10mm bolts holding the coolant overflow tank to the cross member and slide the tank out from the rubber grommet on the side. Disconnect the wiring harness for the coolant level sensor.

Directly under the coolant overflow tank is the wiring harness connection for the fan. Use a small flathead screwdriver to gently pry open the clip and pull the harness straight up and out.

You can now push the over flow tank back away from the cross member enough to lift the fan and shroud up and out of the engine bay.

If you are installing a new fan you will need to unclip the harness connection from the shroud and remove the three T25 Torx bolts holding the fan to the shroud.

Installation is the reverse of removal.

From the top of the engine you will need to remove the two clips that hold the shroud to the radiator (red arrows), the hose clip on the right side of the shroud (green arrow) and the two 10mm bolts that hold the overflow reservoir tank (yellow arrows).
Figure 1

From the top of the engine you will need to remove the two clips that hold the shroud to the radiator (red arrows), the hose clip on the right side of the shroud (green arrow) and the two 10mm bolts that hold the overflow reservoir tank (yellow arrows).

From the bottom of the shroud you will need to unclip the hose, it just pulls out (red arrow).
Figure 2

From the bottom of the shroud you will need to unclip the hose, it just pulls out (red arrow). You can do this from the top without removing the under tray. The shroud sits in two rubber grommets on the lower front cross member and are just a friction and gravity fit (yellow arrows). Note: thisPicture was taken from below with the under tray removed so illustration purposes only, you do not need to remove the under tray to perform this work.

Use a screwdriver and unclip the hose on the right side (red arrow).
Figure 3

Use a screwdriver and unclip the hose on the right side (red arrow).

At the front upper cross member there are four clips: two for the shroud (red arrow) and two for the radiator (yellow arrow).
Figure 4

At the front upper cross member there are four clips: two for the shroud (red arrow) and two for the radiator (yellow arrow).

Use a flathead screwdriver and lift out the two clips for the shroud (red arrow).
Figure 5

Use a flathead screwdriver and lift out the two clips for the shroud (red arrow).

Remove the two 10mm bolts (red arrows) holding the coolant overflow tank to the cross member and slide the tank out from the rubber grommet on the side.
Figure 6

Remove the two 10mm bolts (red arrows) holding the coolant overflow tank to the cross member and slide the tank out from the rubber grommet on the side.

Disconnect the wiring harness for the coolant level sensor (red arrow).
Figure 7

Disconnect the wiring harness for the coolant level sensor (red arrow).

Directly under the coolant overflow tank is the wiring harness connection for the fan.
Figure 8

Directly under the coolant overflow tank is the wiring harness connection for the fan. Use a small flathead screwdriver to gently pry open the clip and pull the harness straight up and out (red arrow).

You can now push the over flow tank back away from the cross member enough to lift the fan and shroud up and out of the engine bay (red arrow).
Figure 9

You can now push the over flow tank back away from the cross member enough to lift the fan and shroud up and out of the engine bay (red arrow).

If you are installing a new fan you will need to unclip the harness connection from the shroud (red arrow) and remove the three T25 Torx bolts (yellow arrows) holding the fan to the shroud.
Figure 10

If you are installing a new fan you will need to unclip the harness connection from the shroud (red arrow) and remove the three T25 Torx bolts (yellow arrows) holding the fan to the shroud.

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Comments and Suggestions:
DaveSpud Comments: I'm having trouble with both the wiring clips-the overflow tank clip and the fan connector. I pushed the wrong way on the overflow clip and popped the top half of the clip off! Can you give any additional direction on how to loosen the clips? Or how their clamps work?
November 9, 2016
  Followup from the Pelican Staff: The electrical connectors? They should push straight on until seated. - Nick at Pelican Parts  

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