SANY SY500H, Operation And Maintenance Manual

Page: 126 / 196

5-18
MAINTENANCE
SY500H Excavator OMM
Cooling System
Replace the Engine Coolant
WARNING
Engine coolant is toxic and could result in death
or serious injury. Avoid inhaling or ingesting
engine coolant.
CAUTION
Do not remove the radiator cap while the engine is
hot. Engine coolant is under pressure when hot
and could spray out, which could result in burns
or serious injury. Always wait for the engine to
cool before removing the radiator cap.
1. Swing the upper structure to allow easy access to the
drain valve beneath the radiator.
2. Prepare the machine for service. See “Maintenance
Safety” on page 2-4.
3. Open the engine access door. See “Engine Access
Door” on page 4-10.
0004828
Figure 5-2
4. Open the expansion tank access door (1). See
“Expansion Tank Access Door” on page 4-10.
5. Slowly open the filler cap (2) on top of the expansion
tank to release the cooling system pressure.
6. Remove the cap when all pressure has been
relieved.
0004777
Figure 5-3
NOTE: For engine cooling system capacity. See
“Location, Capacity, and Type” on page 5-6.
7. Place a suitable sized container under the radiator
drain hose (3).
0004778
Figure 5-4
8. Open the left rear access door. See “Left Rear
Access Door” on page 4-8.
9. Open the radiator drain valve (4).
NOTICE!
Dispose of drained coolant in accordance with all
applicable environmental regulations. Failure to
do so could damage the environment.
10. Allow the coolant to completely drain into the
container, then close the drain valve.
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