HARNESS AS-SOLENOID 2305375 - Caterpillar

Illustration 1 g00993035
(1) The hydraulic tank for the brake actuation and rear axle lube drive (2) The return for the brake cooling oil (3) Hoist return screens (4) The return for the brake cooling oil (5) The steering and the brake cool drive and the fan motor drive tank. (6) Brake cooling relief valves (7) The screen for the rear brake cooling pump (8) The drive motor for the brake cooling pump (9) The screen for the front brake cooling pump The hydraulic tank is actually three separate hydraulic tanks in one. The large section of the hydraulic tank contains oil for the hoist system and for brake cooling. The piston motor drives three brake cooling pump sections that are located inside the large section of the hydraulic tank. The front brake cooling pump section sends oil through screen (9) for front brake cooling to the front brake oil cooler. The rear brake cooling pump sections send oil through screen (7) for the rear brake cooling to the rear brake oil cooler. The oil coolers are protected from high pressure by relief valves (6). Brake cooling oil is returned back to the large section of the hydraulic tank through return ports (2) and return port (4). Oil for the hoist system is returned back to the large section of the hydraulic tank through hoist return screens (3) .Small internal tank (1) is located near the top of the large section of the hydraulic tank. Internal tank (1) contains oil for brake actuation and oil for the rear axle motor drive. The internal tank is used to keep the brake actuation oil free of contaminants that return with the brake cooling oil. A passageway is located in the side of internal tank (1) that connects the internal tank to the large section of the hydraulic tank. The large section of the hydraulic tank is filled with oil that flows through the passageway.Hydraulic tank (5) is located at the bottom of the hydraulic tank. The hydraulic tank contains oil for the steering system, the piston pump that drives the brake cooling pump sections, and the piston pump that drives the fan drive motor. The oil level in lower rear tank (5) is monitored by an oil level sensor.