Maintenance — Hydraulic System Maintenance Hydraulic System Maintenance
6. Slowly remove the oil fill cap (2, Figure 15). Allow the pressure to escape before completely removing the cap.
WARNING
7. Add hydraulic fluid as required. See “Fluid Capacities/Lubricants” on page 11.
Never use your hands to search for hydraulic fluid leaks; use a piece of paper or cardboard to find leaks. Escaping fluid under pressure can be invisible and can penetrate the skin, causing serious injury. If any fluid is injected into your skin, see a doctor at once. Injected fluid MUST be surgically removed, or gangrene may result.
8. Reinstall the oil fill cap. Changing Hydraulic Oil and Filter Replace the hydraulic oil if it becomes contaminated, after major repairs, and after 500 hours or one year of use.
Hydraulic Oil
1. Perform the “Mandatory Procedure” on page 4
Checking Hydraulic Oil Level 1. Perform the “Mandatory Procedure” on page 4.
Safety
Safety
Shutdown
2. Open the hood.
Shutdown
3. Slowly remove the oil fill cap (2, Figure 15). Allow the pressure to escape before completely removing the cap.
2. Completely lower the lift arm and attachment. 3. Open the hood.
4. Position a waste oil collection container, capacity 45 liters (11 gallons), underneath the hydraulic oil reservoir.
4. Check the hydraulic oil level by removing the dipstick (1, Figure 15), located on the left in the engine compartment.
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3
1
Figure 16 – Hydraulic Oil Drain Plug (AL 400 Series shown)
2
1. Drain Plug
Figure 15 – Hydraulic Oil Service (AL 500 Series shown)
IMPORTANT: Always dispose of hydraulic fluids according to environmental laws or take to a recycling center for proper disposal. DO NOT pour onto the ground or down a drain.
1. Hydraulic Oil Dipstick 2. Hydraulic Oil Fill Cap 3. Hydraulic Oil Filter Cover
5. Remove the drain plug (1, Figure 16) and allow the oil to completely drain.
5. If hydraulic oil is required, allow the system to cool. PRINTED IN U.S.A.
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