Serpentine belt breaking Jeep Wrangler 1993 I bought a new serpentine belt for my jeep but it keeps breaking. please help thanks?

Answer 1

1. Look at the broken belt for any clues as to the cause of the failure; did it abrade, snap, cut. 2 - Double check the replacment belt is the right spec & in good condition before inatallation. No nicks, cracks, fatigue, rubs, etc. - just because its new does not always mean its problem free. 3. Disconnect beattery negative 4. Check there's no damage to any of the sheaves; dents around the edges, rough spots, sharp bits etc 5. Check the sheaves are aligned - to do this precisely is tricky because of the access and needs special tooling - however you can do a reasonable check by eye using a straight edge. 6. Check theres no looseness in the sheaves, they should not wobble on the spindles (sideways or in/out) and they shoud rotate smoothly - though not always easily by hand! 7. Fit belt, double check the routing (and make sure your water pump spins in the right direction). Adjust the tension if you don't have a tool for this use a straight edge across two of the sheaves and measure how far you can push the belt down ~1/4 to 3/8 inch is ok 8. Other than the sheaves check there's nothing else that makes contact with the belt on any part of the length as it moves. 9. Reconnect battery and drive away.