BUZZER 9D5489 - Caterpillar

At operating temperature, the hydraulic tank is hot and under pressure.Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin.Before removing the filler cap, press the valve relief button on the hydraulic tank in order to relieve the tank pressure.Remove the filler cap only when the engine is stopped and the filler cap is cool enough to touch with your bare hand. Remove the filler cap slowly in order to relieve any remaining pressure.
Illustration 1 g03517118
Front view of the hydraulic tank
(1) Filler Cap
(2) Breaker Relief Valve
(3) Sight Glass
(4) Drain Valve
Press the button on the breaker relief valve (2) in order to relieve any tank pressure. Slowly remove filler cap (1).
Illustration 2 g03517119
Side view of the Hydraulic Tank
(2) Breaker Relief Valve
(5) Suction for Implement Pump
(6) Hydraulic tank access cover
(7) Kidney loop return port
(8) Implement return port
(9) Fan and kidney loop suction port
(10) Implement 2 suction port
(11) Implement 1 suction port
(12) Fan and implement case drain return
Drain the hydraulic oil tank at drain (4). Reference: For the correct procedure, refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change".
Disconnect the drain lines.
Unbolt hydraulic tank access cover (6).
Illustration 3 g03517136
Top view of the Hydraulic Tank
Illustration 4 g03517139
Return screens
(A) Implement return
(B) Fan and case drain return
Remove return screens that are within reach. Removing the filter from the top to reach one return screen may be necessary. Clean the screens with a clean, nonflammable solvent.
Inspect the O-ring seal, if the casting is removed. If the seal is damaged, replace the seal.
Replace the return screens.
Replace hydraulic tank access cover (6).
Assemble the drain lines.
Fill the hydraulic tank. Reference: For the correct procedure, refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change".
Replace filler cap (1).