PUMP AS-FUEL 9N5459 - Caterpillar

Illustration 1 g06204063
The hydraulic tank is on the right side of the truck between the front and rear tires.
(1) Vent Tube
(2) Front Brake (Left) Return Line
(3) Front Brake (Right) Return Line
(4) Filter Access Port
(5) Hydraulic Tank Oil Fill Tube
(6) Hoist Upper Sight Gauge
(7) Brake Sight Gauge
(8) Hoist Lower Sight GaugeHydraulic Tank (Brake, Brake Cooling, Hoist) is on the right side of the frame between the front and rear tires. Hydraulic Tank (Brake, Brake Cooling, Hoist) supplies oil to the brakes, to the brake cooling system, and to the hoist hydraulics. Hydraulic tank oil fill tube (5) and vent tube (1) are on top of the tank. Vent tube (1) is connected to a breather which is mounted to the steering oil tank on the right-hand platform.Hydraulic Tank (Brake, Brake Cooling, Hoist) has three sight gauges. The Hoist Upper sight gauge (6) is used for checking the oil level when the truck body is down. The oil level should be checked the first time with cold oil and the engine stopped. The level should be checked a second time with warm oil and the engine running. Lower sight gauge (8) can be used to fill the tank when the hoist cylinders are in the RAISED position. When the hoist cylinders are lowered, the hydraulic oil level will increase. After the hoist cylinders are lowered, check the hydraulic tank oil level with upper sight gauge (6) as explained above. The Brake Oil sight gauge (7) is used to check the oil level for the brake fluid section of the tank. See the Operation and Maintenance Manual for the lubrication viscosity and for the refill capacity of Hydraulic Tank (Brake, Brake Cooling, Hoist) .Tank Ports
Illustration 2 g06204093
Rear view of the hydraulic tank and hydraulic connection locations.
(9) To Brake Caliper
(10) Return from Brake Caliper
(11) Brake Control Manifold
(12) (Future Use)
(13) Brake Accumulator Valve (Return)
(14) Brake Cooling Pump (Discharge)
(15) Hoist Gear Pump Raise (Discharge)
(16) Hoist Gear Pump Lower (Discharge)
(17) Hoist Control Low-Pressure Tank Port
(18) Brake Cooling Pump (Suction)
(19) Hoist Gear Pump Raise (Suction)
(20) Hoist Gear Pump Lower (Suction)
(21) (Future Use)The hoist section of Gear Pump (Brake, Brake Cooling, Hoist) pulls oil from Hydraulic Tank (Brake, Brake Cooling, Hoist) through a suction screen and Suction port for hoist section of Gear Pump (Brake, Brake Cooling, Hoist) (18). Suction port for hoist section of Gear Pump (Brake, Brake Cooling, Hoist) (18) is on the inboard side of the tank. Oil returns from the Control Valve (Hoist) through Control Valve (Hoist) relief return port (17).The brake cooling pumps pull oil from Hydraulic Tank (Brake, Brake Cooling, Hoist) (3) through suction screens and Brake cooling suction ports (13). Brake cooling oil returns to the hydraulic tank through Brake cooling return ports (14).