SANY SY155U, Operation And Maintenance Manual

Page: 136 / 192

5-26
MAINTENANCE
SY155U Excavator OMM
0003603
Figure 5-36
6. Clean the turbocharger charge air cooler (3), engine
coolant radiator (4), and diesel fuel oil cooler (5) with
compressed air.
7. Inspect the area below the radiators and remove any
debris that has accumulated during operations.
8. Install and secure the screen with the two wing nut
fasteners.
9. Close the battery and air filter access panel.
Drain the Charge Air Cooler
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.
0003602
Figure 5-37
4. Remove the two wing nut fasteners (1).
5. Pull up and remove the screen (2). Clean the screen
with compressed air.
0003680
Figure 5-38
6. Place a suitable catch container under the end of
drain hose (3).
7. Open the drain valve (4) and allow any accumulated
oil in the charge air cooler (5) to drain.
NOTICE!
Dispose of oil in accordance with all applicable
environmental regulations. Failure to follow this
notice could damage the environment.
8. Close the drain valve, install the screen with the two
wing nut fasteners, and close the covers.
Inspect the Engine Coolant Pump
0003689
Figure 5-39
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.
4. Check the engine coolant pump (1) for signs of
leakage. This indicates a faulty seal on the pump
shaft.
5. If the fan pulley has play, the bearings inside the
engine coolant pump are worn. Contact a SANY
dealer for replacement of an engine coolant pump.
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