A
P–21161
1
2
B
P–21162
1
Operation & Maintenance Manual–48–
331/331E/334 Excavator
HYDRAULIC SYSTEM
Checking And Adding Fluid
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.
Check the hydraulic fluid level, it must be visible in the sight
gauge (Item 1) [A].
Clean the surface around the reservoir (breather) cap and
remove the cap from the reservoir (Item 2) [A].
Check the condition of the fill strainer screen (Item 1) [B].
Clean or replace as necessary.
Be sure the screen is installed before adding oil.
Add the correct fluid to the reservoir until it is visible in the
sight gauge. (See FUEL, COOLANT AND LUBRICANTS
Chart, Page 81.)
Check the breather cap and clean as necessary. Replace
the cap if damaged.
Install the reservoir cap.
Close the tailgate.
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