SANY SY500H, Operation And Maintenance Manual

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MAINTENANCE
5-17 SY500H Excavator OMM
26. Close right rear access door. See “Right Rear
Access Door” on page 4-8.
27. Close engine access cover. See “Engine Access
Door” on page 4-10.
Check the Engine Belts
0004771
Figure 5-20
1. Prepare the machine for service. See “Maintenance
Safety” on page 2-4.
2. Open the engine access door (1). See “Engine
Access Door” on page 4-10.
0004775
Figure 5-21
3. Locate the engine serpentine belt (3) and alternator
belt (2), and inspect for wear, cuts, cracks, or
damage.
4. Replace as necessary.
5. Close the engine access door. See “Engine Access
Door” on page 4-10.
Check the Alternator
Contact a SANY dealer for inspection.
Check the Starter
1. Prepare the machine for checks and inspections.
See “Maintenance Safety” on page 2-4.
2. Open the appropriate access covers or compartment
doors. See “Access Doors, Panels, and Covers” on
page 4-6.
3. Turn the key switch to the START position and listen
for abnormal noise and operation.
Some symptoms that may indicate a faulty starter:
• High-pitched screeching sounds.
• Grinding noise.
• Intermittent whirring sound (starter not engaging
engine flywheel).
• Starter turns engine over slowly.
• Burning smell or smoke coming from the starter.
If the starter is malfunctioning, contact a SANY dealer for
additional information.
Check the Air Intake and the Charge Air
Piping
0004826
Figure 5-1
1. Prepare the machine for service. See “Maintenance
Safety” on page 2-4.
2. Open the engine access door. See “Engine Access
Door” on page 4-10.
3. Inspect the intake piping (1) for wear points and
damage to piping, loose clamps, and punctures that
can damage the engine.
4. Replace damaged pipes and tighten loose clamps as
necessary to prevent the air system from leaking.
NOTE: Tighten all clamps to 6 lb-ft (8 N•m).
5. Check for corrosion under the clamps and hoses of
the intake system piping. Corrosion can allow
corrosive products and dirt to enter the intake
system. Disassemble and clean as necessary.
6. Inspect the charge air piping and hoses for any
damage or loose connections.
7. Repair or replace hose clamps as necessary.
8. Close the engine access door. See “Engine Access
Door” on page 4-10.
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