TIMER CASE 0858079 - Caterpillar

Illustration 1 g02728085
Center of Main Screed (1) Crown adjust motor (2) Crown scale (3) Crown adjust screwThe center of the main screed can be raised or lowered to provide a 10 percent positive or 3 percent negative crown. The screed is equipped with a power crown control mechanism.Two crown adjusting screws set the crown. One screw (3) is at the rear of the screed and one screw is at the front of the screed. The two screws are connected together with a chain and sprockets. Crown adjust motor (1) turns the rear screw. As the rear screw turns, the chain causes the front screw to turn the same amount. A switch on the right screed operator station controls the crown motor.Crown adjust scale (2) above the crown motor indicates the approximate crown setting in percent. The scale indicates from 2 percent negative crown to 12 percent positive crown. The scale should be used for reference only. The mat should be checked for the actual crown. Fine-tuning may be required to obtain the desired crown.