55
LeeBoy Model 8510E Conveyor Paver 5-17
Maintenance
Change Hydraulic Oil and Filter
Changing the hydraulic oil removes the accumulation
of dirt, water and mechanical wear particles from the
hydraulic oil system. Clean, ltered oil is critical to
optimize hydraulic system operation. The hydraulic oil
system holds approximately 67 gallons (254 liters).
Contaminated hydraulic oil can
shorten the expected service life of components in
the hydraulic system.
DO NOT drain the hydraulic oil when it
is hot. Hot hydraulic oil can cause serious personal
injury.
Protect your eyes by wearing
safety glasses when working on hydraulic system
components.
Fuel
Filters
Engine
Hydraulic
Charge Filter
Oil
Filter
Figure 5-20. Hydraulic Charge Filter
Use the following procedures to change the hydraulic oil
and charge lter:
1. Stop the engine.
2. Allow the hydraulic oil to cool until it is at a warm
temperature.
3. Slowly remove the hydraulic oil strainer ll cap. Do
not remove the strainer portion under the cap.
4. Place a clean, lint-free cloth over the reservoir ll
tube opening and secure in place with tape.
5. Carefully remove the plug from the bottom of the
hydraulic tank.
6. Allow all the hydraulic oil to drain from the hydraulic
tank.
7. Reinstall the hydraulic oil drain plug and tighten
securely. Close valve.
8. Change the hydraulic charge lter by turning lter
counterclockwise, then replace with new lter
turning clockwise until snug (by hand only). (Figure
5-20)
9. Carefully remove the cloth from the hydraulic oil
reservoir ll tube opening.
10. Remove the strainer. Replace if necessary.
DO NOT ll the hydraulic oil reservoir
with new hydraulic oil until the strainer inside the ll
cap has been serviced.
11. Fill the hydraulic oil tank with ltered hydraulic oil.
The cold oil level should be about 1/2-inch below the
ll level black line on the sight gauge. (Figure 5-19)
12. Reinstall the hydraulic oil strainer ller cap and
tighten the three wingnuts securely.
13. Start the engine and check the hydraulic system for
possible leaks.
DO NOT use your hands on any
hydraulic hoses, ttings or system component when
checking for leaks. Serious personal injury can
result from an oil leak under high pressure. Oil can
be injected under the skin by high pressure. Protect
the eyes by wearing safety glasses.
Stop the engine immediately if any
hydraulic leak is noted. DO NOT start the engine until
any problem noted has been corrected.
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