SANY SY500H, Operation And Maintenance Manual

Page: 141 / 196

MAINTENANCE
5-33 SY500H Excavator OMM
0004762
Figure 5-48
4. Place a suitable container under the case drain filter
(1).
NOTICE!
Make sure the hydraulic tank is empty before
removing the cover. See “Replace Hydraulic Oil”
on page 5-35.
5. Remove four fasteners (2) that secure the cover to
the housing.
6. Remove the case drain filter cover (3).
7. Remove the case drain filter.
8. Install a new case drain filter and a new O-ring.
9. Install the case drain filter cover.
10. Add hydraulic oil. See “Add Hydraulic Oil” on
page 5-34.
11. Start and run the engine at low idle (1050 rpm) for 10
minutes to bleed any air from the hydraulic system.
0004692
Figure 5-49
12. Set the hydraulic lockout control lever (9) to the
unlocked (open) position (10).
WARNING
Never open a hydraulic component under
pressure. Escaping hydraulic oil is under high
pressure and can penetrate skin and cause
serious injury or death. Do not use hands to
check for leaks. Wear gloves, eye protection, and
other personal protective equipment (PPE), and
use a piece of cardboard or paper to search for
suspected leaks.
13. Check for leaks and repair as necessary.
14. Close and secure the right rear access door.
15. Shut down the engine.
Check the Hydraulic Oil Level
NOTE: Park the machine on a level surface.
1. Prepare the machine for maintenance. See
“Maintenance Safety” on page 2-4.
2. Open the right rear access door. See “Right Rear
Access Door” on page 4-8.
222558858555
Figure 5-50
3. Check the hydraulic oil level in the hydraulic oil tank
through the sight glass (1). The hydraulic oil level
should be within the hydraulic oil level decal (2) of the
sight glass.
4. If the level is below the L mark, add hydraulic oil. See
“Add Hydraulic Oil” on page 5-34.
Check the Hydraulic Hoses
Check all hoses for leaks and replace damaged or
leaking hoses immediately. Any hydraulic pump lines,
hoses, and connectors connected to the engine
compartment must be replaced if they are damaged.
Make sure there is a sufficient distance between all lines
and hoses and the high-temperature engine components
(for example, the exhaust system). Make sure there is no
friction between them.
3
1
2
10
9
2
1