V-Mech Automotive - This common issue on BT-50 and Ford Rangers sees the accessory drive belt tensioner sag and slowly slip the belt off the pulleys. You can see on the top
![ISF belt slip at high RPM (solved Gates 6PK2055 accessory belt) - Lexus IS-F Club - Australian Lexus Owners Club Forums ISF belt slip at high RPM (solved Gates 6PK2055 accessory belt) - Lexus IS-F Club - Australian Lexus Owners Club Forums](https://lexusownersau.b-cdn.net/uploads/monthly_2018_08/Belt.jpg.4627f24d011d752b4697aafc2ec9d960.jpg)
ISF belt slip at high RPM (solved Gates 6PK2055 accessory belt) - Lexus IS-F Club - Australian Lexus Owners Club Forums
![How do I adjust the drive belt tensioner so I can install a new drive belt on my 2002 2.3L ford ranger? How do I adjust the drive belt tensioner so I can install a new drive belt on my 2002 2.3L ford ranger?](https://www.justanswer.com/uploads/VirtualWrench/2007-12-17_113650_belt.jpg)