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1997 Mercedes Benz 300d fan clutch removal

Tiny
PLAYERE
  • MEMBER
  • 1997 MERCEDES BENZ 300D
Air Conditioning problem
1997 Mercedes Benz 300d Front Wheel Drive Automatic 150, 00 miles

hey guys. I am huge fan of your webite. Its very informative and full of information. So I felt like you guys could probally help with my problem. Ok, I have a 97 mecedes E300D and I am trying to change out the water pump. The only problem I have is this god forsakken fan clutch. How do you get it off? I mean is there a special tool for it? If so what would I be. I went to the autozone to rent a fan clutch wrench but I really didnt know what to do with it and honsetly it didnt seem to fit on anything in regards to the fan clutch. If there is a tool how do yu use it. What does it attach to where do you fet it from. Heck can it be removed please help.A
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Sunday, December 6th, 2009 AT 12:48 PM

5 Replies

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Hello and thanks for the donation and compliment!

Below are the 3 types of fan clutches that were used in the 1997 300 series motors. You should be able to match up the picture with your motor then follow its replacement steps to learn how to remove and replace your viscous fan clutch.


https://www.2carpros.com/forum/automotive_pictures/261618_Noname_1239.jpg



https://www.2carpros.com/forum/automotive_pictures/261618_Noname2_363.jpg



https://www.2carpros.com/forum/automotive_pictures/261618_Noname3_138.jpg

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Sunday, December 6th, 2009 AT 6:16 PM
Tiny
PLAYERE
  • MEMBER
  • 6 POSTS
Wanted to know does the fan clutch for a 1997 mercedes E300D have a reverse thread. If not is it right threaded or left. I am having a hard time trying to get it off and I ould like to know which way I need to go without strippeing the threads if I havent already done so.
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Saturday, December 12th, 2009 AT 9:56 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Hi playere,

There are 2 diffferent designs for the clutch fan holding nut and one is right and the other is left threaded.

For the nut that is in front of the fan clutch, it is left threaded. If the nut is behind the fan clutch it is right threaded.

For both, loosening is by turning the nut clockwise. If the holding tools do not work well, use a common ( open end ) spanner and tap the spanner clockwise with a hammer to release.

Hope this helps.

Have a nice day.
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Saturday, December 12th, 2009 AT 11:16 PM
Tiny
PLAYERE
  • MEMBER
  • 6 POSTS
So I turn clockwise. Ok cool. But as I looked at the allen head bolt( the that they use for fan clutch bolt) I see that it may have been stripped. Is it possible I may use jb weld on the allen head to try to get it out. Since I have to replace the bolt anyway. Any advice would help
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Sunday, December 13th, 2009 AT 5:35 PM
Tiny
DR LOOT
  • MECHANIC
  • 2,311 POSTS
Try using a pair of Vise Grip on the outside of the allen bolts to remove them.
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Monday, December 14th, 2009 AT 12:05 AM

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