SY26U Excavator OMM
Maintenance
SANY
Operation and Maintenance Manual — 1119
5-37
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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.
8. Check the hydraulic oil level and add hydraulic oil as
needed. See “Hydraulic Oil Level Check” on page 4-
10.
Clean and Replace the Hydraulic Oil Suction
Strainer
1. Prepare the machine for service. See “Maintenance Safety” on page 2-8.
2. Relieve system pressure. See “Relieve Hydraulic System Pressure” on page 5-32.
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 filler
cover. Remove the filler cover slowly to relieve any pressure to prevent injury.
Failure to follow these warnings could result in death or serious injury.
NOTICE!
Dispose of used oil and strainer in accordance with all applicable environmental regulations.
Failure to do so could result in damage to the environment.
Fig. 5-26
0001322
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