PUMP GP-PISTON 1968429 - Caterpillar

Illustration 1 g00910203
The hydraulic tank is located on the right side of the machine. Press button (1) on the breaker relief valve in order to relieve any tank pressure.
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.
Slowly remove filler cap (2).
Illustration 2 g00130780
Remove the cover mounting bolts. Remove the cover, the screen, and filter assembly.
Remove the retaining nut and the screen.
Remove the filter elements. Properly discard the filter elements. If the stud was loosened during the removal of the retaining nut, tighten the stud to a torque of 55 7 N m (40 5 lb ft).
Clean the cover and the screen in a clean nonflammable solvent.
Inspect the cover seal and inspect the seal on the top of the tank. Replace the seals if the seals are damaged.
Install a new filter element.
Install the screen and the retaining nut.
Install the cover and the filter assembly. Tighten the cover mounting bolts to a torque of 45 7 N m (32 5 lb ft).
Illustration 3 g00581645
Maintain the hydraulic oil to the "FULL" mark on the sight gauge.
Install filler cap (2).