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Home >> Jeep >> 2007 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine & Automatic Transmission Cooling System) >> Accessory Drive >> TENSIONER-Accessory Drive Belt >> Operation >> Belt TENSIONER-Operation

Belt TENSIONER-Operation

WARNING: This page is about a different variant/trim than selected.
WARNING: The automatic belt tensioner assembly is spring loaded. Do not attempt to disassemble the tensioner assembly.

The automatic belt tensioner maintains correct belt tension using a coiled spring within the tensioner housing. The spring applies pressure to the tensioner arm pressing the arm into the belt, tensioning the belt.

If a new belt is being installed, the arrow must be within approximately 3 mm (1/8 in.) of indexing mark. Belt is considered new if it has been used 15 minutes or less. If this specification cannot be met, check for:

  1. The wrong belt being installed (incorrect length/width)
  2. Worn bearings on an engine accessory (A/C compressor, power steering pump, water pump, idler pulley or generator)
  3. A pulley on an engine accessory being loose
  4. Misalignment of an engine accessory
  5. Belt incorrectly routed.
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