The front band, depending on what the factory service manuals calls for is to loosen the lock nut on the front band and tighten the adjuster,it is external (while holdiing the lock nut) to 72 inch lbs and then back the adjuster bolt off from 1.5 to 2.0 full turns and lock it down, Google the specs for your year tranny and motor size The rear band is harder to get to, you have to drop the tranny pan