CASE ASSEM. 9S8791 - Caterpillar

Illustration 1 g01062363
The 112-PU wire transfers power from the main power relay to the fuse for water spray and to the fuse for emulsion spray. Power transfers from the water spray fuse to contact 2 of the water spray switch through the 118-GY wire. Power transfers from the emulsion spray fuse to the switch for emulsion spray through the 119-PK wire.When the water spray switch is in CONTINUOUS, contact 1 and contact 2 of the switch are closed. Power is then transferred to the C922-BR wire. The C922-BR wire transfers power to the motor for water spray, and the motor for water spray operates. The motor operates without interruption while the water spray switch is in CONTINUOUS.When the water spray switch is in INTERMITTENT, contact 2 and contact 3 of the switch are closed. The C935-PU wire transfers power to the BATTERY contact of the timer. Also, power is transferred to contact 30 of the relay for the water spray, and to the coil of the relay for water spray. The ground path to the coil of the relay for water spray is through the timer. The timer completes the ground path to the coil in 15 second increments. When the ground path is complete, the coil in the relay for the water spray is energized, and power transfers across the relay to the motor for the water spray. The motor for water spray operates until the ground path for the coil in the relay for the water spray is broken.The emulsion spray system on the CB-225E consists of a simple switch with an electric motor. When the switch is ON, power is transferred to the motor through the A893-OR wire, and the motor operates.