BUSHING 1177278 - Caterpillar

Illustration 1 g01432716
Rear of Machine (1) Screed lift cylinder (2) Auger lift cylinderEach side of the machine is equipped with screed lift cylinder (1) and auger lift cylinder (2). Pressurized oil is directed into screed lift cylinders (1) under the following conditions: the screed is lifted, or the screed assist system is operating. When the screed lock switch is in the UNLOCK position, the head ends of the screed lift cylinders are open to the hydraulic tank. When the screed is being lowered, the rod ends of the screed lift cylinders are also open to the hydraulic tank. Gravity forces the screed to the ground. The inlet port at the rod end of each screed lift cylinder contains an orifice. The orifice limits the rate in which the screed lowers. When the auger lift switch is in the RAISE position, the auger raise solenoid directs oil into the rod end of the right auger lift cylinder. Oil is transferred from the head end of the right auger lift cylinder to the rod end of left auger lift cylinder (2). The auger lower solenoid directs oil from the head end of the left auger lift cylinder into the return passage in the auxiliary manifold. When the auger lift switch is in the LOWER position, the auger lower solenoid directs oil into the head end of the left auger lift cylinder. Oil is transferred from the rod end of the left cylinder to the head end of the right cylinder. The auger raise solenoid directs oil from the rod end of the right auger lift cylinder into the return passage in the auxiliary manifold.
Illustration 2 g01432720
Right Side of Machine (3) Tow point cylinder (4) Tow point position scaleEach side of the machine is equipped with tow point cylinder (3) and tow point position scale (4) .Each tow point cylinder raises the respective tow point and each tow point lowers the respective tow point. When