VIBRATORY GP 3904800 - Caterpillar

Illustration 1 g00101435
Park the machine on level ground. Lower the bucket to the ground so that the stick is vertical.
Unlatch the engine hood and raise the engine hood.
Illustration 2 g00687272
(1) Bolts (2) Washers (3) Cover
Remove bolts (1), washers (2) and cover (3) from the top of the hydraulic tank.
Illustration 3 g00687312
Clean the area thoroughly in order to keep dirt out of the screen cover. Clean the area thoroughly in order to keep dirt out of the fill/vent plug.
Relieve the internal pressure from the hydraulic tank by loosening the fill/vent plug. After the pressure is relieved, remove the fill/vent plug.
Illustration 4 g00691202
(4) Bolts (5) Washers (6) Cover (7) Spring (8) Screen
Remove bolts (4), washers (5) and cover (6) .Note: Do not allow spring (7) to fall into the tank.
Remove spring (7) and screen (8) .Note: Refer to Operation and Maintenance, "General Hazard Information" for information on containing fluid spillage.
Wash the screen in a clean nonflammable solvent. Allow the screen to dry. Inspect the screen. Replace the screen, if the screen is damaged.
Illustration 5 g00691204
(9) O-ring seal (10) O-ring seal
Remove O-ring seal (9) from screen (12) .
Inspect O-ring seals (9) and (10). Replace the O-ring seals if wear or damage is evident.
Install O-ring seal (9) on screen (12) .
Install screen (8) and spring (7). Then install cover (6), washers (5), and bolts (4) .Note: Make sure that the O-ring seals and the spring are properly positioned during installation.
Inspect the O-ring seal on the filler plug for damage. Replace the O-ring, if necessary. Clean the filler plug. Install the filler plug.
Install cover (3) with bolts (1) and washers (2) .
Close the engine hood and latch the engine hood.