SANY SY500H, Operation And Maintenance Manual

Page: 138 / 196

5-30
MAINTENANCE
SY500H Excavator OMM
Drain the Primary Fuel Filter
WARNING
Never maintain the fuel system near an open
flame or while smoking. This could cause a fire
and result in death or serious injury.
1. Prepare the machine for service. See “Maintenance
Safety” on page 2-4.
0004761
Figure 5-39
2. Locate the filter (1) behind the right rear access door.
See “Right Rear Access Door” on page 4-8.
3. Place an appropriately sized container beneath the
fuel filter drain.
4. Open the drain valve (2) to allow all water and/or
contaminated fuel to drain from the filter.
NOTICE!
Dispose of contaminated fuel or water in
accordance with all applicable environmental
regulations. Failure to do so could damage the
environment.
5. Close the drain valve when the flow from the primary
fuel filter is free of water or contamination.
NOTE: If an excessive amount of water or contaminant
was found while draining the fuel filter, drain the
fuel tank.
6. Check for fuel leaks.
7. Repair fuel leaks if found.
8. Close and secure the right rear access door.
Hydraulic System
Check the Accumulator Function
WARNING
• The accumulator contains pressurized nitrogen.
Improper handling is extremely dangerous.
• Do not drill holes in the accumulator or place it
close to fire or a high-heat source.
• Do not weld any part on the accumulator.
• Air in the accumulator must be released upon
disposal.
• See “Accumulator” on page 2-5 for special
precautions that need to be taken when working
with or around the accumulator. Contact a SANY
dealer for additional information.
Failure to follow these warnings could result in
death or serious injury.
The accumulator allows the operator to lower hydraulic
equipment within 15 minutes of an engine shutdown with
the key switch in the ON position.
1. Prepare the machine for checks and inspections.
See “Maintenance Safety” on page 2-4.
0000709
Figure 5-40
2. Position the work equipment (1) 18 in.–24 in.
(457 mm–610 mm) from the ground.
3. Shut down the engine.
4. Turn the key switch to the ON position.
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