GENERAL AR-TRACTOR 8W8800 - Caterpillar

Illustration 1 g00581354
Solenoid ValvesSolenoids control the oil flow to the clutches in the transmission. When a direction and gear are selected by the operator, the control module activates the appropriate solenoids. Two solenoids are activated in order to move the machine. One solenoid is activated for the direction and one solenoid is activated for the gear. When a solenoid is activated, a solenoid receives voltage from the control module. When the transmission is in neutral, no solenoids are activated.The solenoids have a connector with 2 contacts. One contact receives power from the corresponding connector contact (31 through 36) of the control module. The other contact returns to connector contact 39 of the control module. All of the solenoids have a return lead. The return leads join together with the other return leads. All of the leads terminate at contact 39.