MAINTENANCE
5-23
SY60C Excavator OMM
6.
Drain the engine coolant in the over flow tank (4) by
removing cap (5), loosening the clamp fastener (6),
and removing the tank to pour the over flow tank
contents in a container.
7.
Install the over flow tank, tighten clamp fastener and
install the over flow tank cap.
8.
Close the drain valve. Add new engine coolant to the
radiator until the level reaches the radiator filler
opening. With the radiator cap removed, run the
engine at low idle for 5 minutes and then at high
speed for 5 minutes to bleed air from the cooling
system.
9.
Top off the radiator and fill the over flow tank until the
engine coolant is between the FULL and LOW
marks.
10. Install the radiator filler cap.
Inspect and Clean the Cooling Package
WARNING
• Do not allow compressed air, pressurized water,
or steam to come into contact with skin. Always
wear goggles, gloves, and other personal
protective equipment (PPE).
• Failure to follow this warning could result in
death or serious injury.
NOTICE!
• Compressed air, high-pressure water, or steam
can damage the cooling fins if the nozzle is too
close to the fins. To prevent cooling fin damage,
keep the nozzle at a safe distance while cleaning.
• Damaged cooling fins may lead to leaks and
overheating. In dusty environments, inspect the
cooling fins daily regardless of the maintenance
schedule.
1.
Prepare the machine for service. See “Maintenance
Safety” on page 2-5.
0002957
Figure 5-27
2.
Open the engine hood (1) and the right rear access
door (4).
NOTE:
Maintain a minimum distance of 12 in. (30 cm)
from the cooling fins during cleaning.
3.
Check the front and rear of the radiator (2), hydraulic
oil cooler (3), and air conditioner condenser (5) for
dirt or debris. Use compressed air or low-pressurized
water from the engine side out through the cooling
package to clean the radiator fins.
4.
Check the fins for deformation, corrosion, and cracks
after cleaning.
5.
Check for loose radiator hoses and clamps. Tighten
clamps as necessary. Check for indications of
coolant leaks, repair as required.
Inspect the Engine Coolant Pump
Prepare the machine for service. See “Maintenance
Safety” on page 2-5.
0002899
Figure 5-28
The engine coolant pump (1) is behind and connected to
the engine fan (2).
1.
Check if the engine fan pulley has any play by gently
pulling and pushing the fan from side to side.
2.
If the fan pulley has play, the bearings inside the
engine coolant pump are worn and the engine
coolant pump must be replaced.
3.
Look for signs of leaking coolant at hose connections
and underneath the coolant pump.
NOTE:
Contact a SANY dealer for replacement of engine
components.
2
1
5
3
4
2
1
