Figure 10-100-2
HYDRAULIC SYSTEM Checking And Adding Fluid
1
Put the machine on a flat level surface. Retract the arm and bucket cylinders, put the bucket on the ground and raise the blade. Stop the engine. Open the tailgate. Figure 10-100-1 2
P-21162
Check the condition of the fill strainer screen (Item 1) [Figure 10-100-2]. Clean or replace as necessary. Be sure the screen is installed before adding oil. 1 Add the correct fluid to the reservoir until it is visible in the sight gauge. (See HYDRAULIC FLUID SPECIFICATIONS on Page SPEC-50-1.) P-21161
Check the breather cap and clean as necessary. Replace the cap if damaged. Check the hydraulic fluid level, it must be visible in the sight gauge (Item 1) [Figure 10-100-1]. Clean the surface around the reservoir (breather) cap and remove the cap from the reservoir (Item 2) [Figure 10-100-1].
Install the reservoir cap. Close the tailgate.
10-100-1
331, 331E, 334 Excavator Service Manual