LeeBoy 8515D - Hydraulic System

5-16 LeeBoy Model 8515D Conveyor Paver
Maintenance
Hydraulic System
Check Hydraulic Oil
The hydraulic motors and hydraulic cylinders use the
same hydraulic oil reservoir and hydraulic oil supply.
Take care when working with the
hydraulic system to ensure it is completely clean.
Never allow the hydraulic oil level to
fall too low. Pump damage will occur.
Check the hydraulic reservoir oil level daily using the
sight gauge on the left side of the paver. (Figure 5-19)
Check the hydraulic oil level when the hydraulic oil is at
normal operating temperature for an accurate reading.
If the hydraulic oil level falls below the black line, add
more hydraulic oil.
Hydraulic
Fill Cap
Sight
Gauge
Figure 5-19. Hydraulic Oil Cap and Sight Gauge
DO NOT loosen or remove the
hydraulic oil strainer ll cap when the hydraulic oil
is hot. Always loosen the cap slowly to relieve any
pressure in the hydraulic oil reservoir.
• Slowly unscrew the three wing nut to remove the
hydraulic oil strainer ll cap and add hydraulic oil,
replacing the wing nuts after lling the tank. (Figure
5-19)
• DO NOT use unltered hydraulic oil.
• Check the hydraulic oil level using the sight gauge.
• Keep the hydraulic oil lled to the correct level.
DO NOT overll the hydraulic oil
reservoir.
Leeboy uses a lead-detection dye that
may turn the hydraulic oil a slight yellow tint.
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 41 gallons.
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.