Need to know shorter belt size

Tiny
BATHOOR
  • MEMBER
  • 2001 MERCEDES BENZ E320
  • 3.2L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 110,000 MILES
What belt size do I need to bypass A/C compressor for my Mercedes W210, E320, 3.2L, 2001, 722.607, V6 M112. Original Belt size: 2390 or 2400.
I am on a highway the belt and AC compressor are damaged. Help please!
Attached is sample picture.
Saturday, June 5th, 2021 AT 1:24 AM

3 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Unfortunately we don't have an option for a Non A/C belt so we have no way of knowing what the measurement would be.

For starters, I suspect you are off the highway at this point but if not, you can drive the vehicle with no belt but you want to keep an eye on the engine temperature. As soon as it starts to get hot, you want to pull over and let it cool down. However, it should be enough to get you to the next exit to get to a safer location.

As for what to do with the belt, you have two options. First is to get a bypass pulley and install it in place of the compressor. Next is to take a string and wrap it around the pulleys except the compressor and then measure the string. You will also want to compensate for the tensioner which normally has about 2 inches of travel so you need to remove this amount so the belt is tight. You will need to measure yours just to be sure.

Once you have this string length you will have to get a custom sized belt.

Please run through this info and let us know if you have other questions. Thanks
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Saturday, June 5th, 2021 AT 7:35 AM
Tiny
LINDA ROSEN
  • MEMBER
  • 2 POSTS
I deleted the A/C compressor this is the size belt needed for a 3.2 l V6 2003 Mercedes-Benz E320.
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Saturday, November 19th, 2022 AT 6:16 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Excellent addition to this thread! Please feel free to use 2CarPros anytime!
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Sunday, November 20th, 2022 AT 12:25 PM

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