Genuine Mitsubishi Sigma V-Belt

Mitsubishi Sigma V-Belt Parts Questions & Experts Answers

• Alternator Belt
  MD187461
  Q: How often should the V-Belt(s) be inspected and adjusted, and how to ensure proper tension and replacement on Mitsubishi Sigma?

  A:

  The V-belts fitted to your Mitsubishi should be checked and adjusted every 15000 miles. Furthermore, they should be replaced every 30000 miles. Start by examining the belts. Then engage the starter for a short time, allowing for a different inspection of worn areas. A belt must be under constant tension to prevent slipping. A slipping belt will overheat and wear out quickly. However, excessive tension can cause the bearing to fail prematurely. The downward deflection of the belt should be one-quarter to three-eighths in order to estimate tension between pulleys. If necessary, loosen the bolt that holds the support and the bolt that adjusts it. Then pull the alternator or the power steering pump away from the engine block for the required tension before tightening the bolt that adjusts it. On particular models, the timing belt tensioner bolts situated between alternator and power steering pump pulleys will require adjustment and lock nut done up to secure adjustment. Don't pry against the accessory, if you need to pry on the housing by the adjusting bolt. A torque wrench should be used to tighten the support bolt to 14-18 ft.lbs. and the adjusting bolt, to 8.5-11 ft. lbs Loosen both bolts and move accessory towards the engine block so you don't have to force the new belt on. If installation is still difficult, the wrong belt may have been chosen. After you have put the accessory belt onto the pulleys, pull the accessory outward to tension it. New belts can be adjusted slightly tighter than used belts. Check the tension after running the engine and after a few hundred miles.