DOWEL (.9100" DIAMETER) 4D4011 - Caterpillar

Illustration 1 g01061655
(1) Hydraulic tank (2) Sight glass (3) Hydraulic oil temperature switchThe hydraulic tank (1) is located on the left side of the machine. The hood for the engine compartment provides access to the hydraulic tank.The propel hydraulic system, the vibratory hydraulic system, and the steering hydraulic system share a common hydraulic tank (1). The tank is located on the left side of the engine compartment. The sight glass (2) is located on the front of the tank. The sight glass indicates the oil level in the hydraulic tank. Oil should be visible between the "FULL" mark and the "ADD" mark when the oil is warm. The refill capacity of the hydraulic tank is 50 L (13 US gal). The hydraulic oil fill port can be accessed from the left side of the machine, while the engine hood is closed.The hydraulic oil temperature switch (3) is mounted in the front, lower face of the hydraulic tank. The actuation temperature of the switch is 92 °C (198 °F). When the hydraulic oil temperature is greater than the actuation temperature of the switch, the switch is closed, and a ground path is provided for current to flow through the hydraulic oil temperature indicator on the instrument panel. The deactuation temperature of the switch is 83 °C (181 °F). Once the switch has been actuated, the oil temperature must fall below the deactuation temperature before the switch will reopen.