SANY SY35U Operation And Maintenance Manual page 207

SY35U Excavator OMM
3. Clean the top of the hydraulic tank and the return filter
cover (1).
4. Loosen the four fasteners (2) securing the return filter
cover. Push the cover down against spring pressure
while removing the fasteners. Remove the cover.
NOTICE!
Dispose of hydraulic oil and filters according to
all applicable environmental regulations. Failure
to follow this notice could damage the
environment.
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 "Check the Hydraulic Oil Level" on
page 4-11.
SANY
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Fig. 5-62
Fig. 5-63
Operation and Maintenance Manual — 0120
Maintenance
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0003772
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