Bypass A/C compressor belt size

Tiny
SRAY411
  • MEMBER
  • 2001 MITSUBISHI GALANT
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
Bad A/C compressor due to bad pulley bearing. Looking to bypass the compressor for now. Need a shorter belt size.
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Wednesday, November 21st, 2018 AT 12:17 PM

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Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi and thanks for using 2CarPros.

Removing the compressor changes the belt routing and yes the belt length. That usually does not work. What I suggest is to get an AC bypass pulley. It is about the same price as a belt and takes the place of the compressor. By doing this, you will maintain the correct routing and be able to reuse the present belt. If you are unable to find a bypass pulley, you will need to measure the length of belt needed, and a parts store can determine the correct belt.

Let me know if this helps. I wish I could just give you a part number, but that needs to be determined by how you plan to route the new belt and length. Make sure to keep all pulleys turning the correct direction.

Take care,
Joe
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Wednesday, November 21st, 2018 AT 4:08 PM
Tiny
STEVE W.
  • EXPERT
The 2.4 came with or without AC, you would need the non-AC belt and the non-AC tension-er pulley. On the AC equipped vehicles the tension-er rides on the rear of the belt. On the non-AC versions the tension-er rides inside on the ribs. Two different parts. You will likely need to move the AC compressor out of the way as well.
Belts - K series, 5 rib, 17MM wide, 43.4 outside diameter.
Dayco 5050430, Continental 4050429, ACDelco 5K429, Gates K050429
The tension-er pulley does not seem to be listed.

If the issue is the pulley bearing on the compressor and not the compressor itself, you may be able to change just the bearing, although a replacement compressor is not all that expensive.
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Wednesday, November 21st, 2018 AT 7:49 PM

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