SY50U Excavator OMM
Maintenance
SANY
Operation and Maintenance Manual — 0120
5-51
TABLE OF
CONTENTS
INTRODUCTION
SAFETY
MACHINE
CONTROLS
MACHINE
OPERA
TION
MAINTENANCE
SPECIFICA
TIONS
OPTIONAL
EQUIPMENT
3. Clean the top of the hydraulic tank and the return filter
cover (1).
4. Loosen the four fasteners (2) that secure the return
filter cover. Push the cover down against the spring
pressure while removing the fasteners. Remove the
cover.
5. Discard the used spring (3) and return filter (4). Install
a new return filter and spring.
6. Install a new O-ring for the return filter cover. Tighten
the fasteners securely.
7. To purge air from the system, start the engine and run it
at low idle for 10 minutes. Check for leaks.
8. Check the hydraulic oil level and add hydraulic oil as
needed. See “Check the Hydraulic Oil Level” on
page
Clean and Replace the Hydraulic Oil Suction Strainer
NOTICE!
Dispose of the hydraulic oil and filters in
accordance with all applicable environmental
regulations. Failure to do so could result in
damage to the environment.
WARNING!
Never use hands to search for hydraulic oil
leaks. Use a piece of cardboard or paper.
Hydraulic oil leaking under pressure can
penetrate the skin. Failure to follow this warning
could result in death or serious injury.
WARNING!
•
Allow the hydraulic system to cool before servicing. Hot oil may cause burns or other
serious injury.
•
The hydraulic tank may be under pressure, and hydraulic oil may be present at the
breather. Relieve any pressure to prevent injury.
Failure to follow these warnings could result in death or serious injury.
Fig. 5-43
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1
2
Fig. 5-44
0001693
4
3
2
2
1
