SANY SY155U, Руководство по эксплуатации и обслуживанию, Страница: 130 / 192

5-20
MAINTENANCE
SY155U Excavator OMM
0004113
Figure 5-17
NOTE: If the dust valve is cracked, torn, remains open, or
is missing, dust particles that are normally
expelled can reenter the filter housing and deposit
themselves on the filter, shortening the air filter
service life.
5. Check the condition of the dust valve and replace it if
required.
6. Release the three latches (2) and remove the air filter
end cap (3).
0003647
Figure 5-18
7. Remove the primary air filter (4).
8. Inspect the air filter for damage, dampness, or dust.
Replace as necessary.
NOTICE!
Always replace the air filter, and never attempt to
clean and reuse a dirty or clogged air filter. Failure
to follow this instruction could result in machine
damage and improper machine performance.
0003575
Figure 5-19
9. Clean the inside of the air filter housing (5) with a
clean cloth before replacing the secondary air filter
(6).
10. Install the air filter housing end cap on the housing,
making sure that the dust valve is pointing down.
Secure the end cap to the housing using the latches.
11. Close the battery and air filter access door.
Change the Engine Oil and Filter
Replace the engine oil after the initial 50 hours of service,
then every 500 hours.
WARNING
• Do not perform engine maintenance when the
engine is hot. Hot engine oil or engine
components may cause severe burns.
• Allow the engine to cool before performing
engine maintenance.
Failure to follow this caution could result in injury.
1. Prepare the machine for checks and inspections.
See “Maintenance Safety” on page 2-5.
2. Open the appropriate access covers or compartment
doors. See “Doors, Panels, Covers, and Filler Cap”
on page 4-5.
3. Turn the battery disconnect switch to OFF. See
“Battery Disconnect Switch” on page 3-15.
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