JLG sky trak mmv Service Manual page 50

General Information, Specifications and Maintenance
4. Slowly turn the radiator cap (1), located in the upper
radiator hose, to the first stop and allow any
pressure to escape. Remove the radiator cap.
5. Place a funnel (2) at the base of the radiator to
channel the drained coolant into a container.
Unscrew the radiator drain plug (3) and allow the
coolant to drain into the funnel.
6. Detach the hose (4) from the fitting (5) on the neck of
the radiator fill tube and drain any coolant from the
overflow bottle into the funnel.
7. Flush the radiator with clean water, and flush drain
again.
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2
8. Remove the engine block drain plug (6) and drain
any coolant from the engine block. Replace the
engine block plug.
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1
5
4
OM1640
6
OT0260
9. Transfer the coolant to a container with a cover and
label the container "Used Anti-freeze." Dispose of the
used coolant at an approved recycling facility.
10. Reconnect the hose (4) to the fitting on (5) the neck
of the radiator fill tube. Close the radiator drain plug
or petcock.
11. Open the petcock (7) on the turbo aftercooler.
12. Fill the radiator completely with a 50/50 mixture of
ethylene glycol and water. Replace the radiator cap.
Add coolant to the overflow bottle until the bottle is
half to three-quarters full. This "overfilling" will
compensate for any air in the cooling system.
13. Close the petcock (7) on the turbo aftercooler.
14. Clean dirt and debris from the radiator core.
15. Start and run the engine until normal engine operating
temperature is reached, then turn the engine OFF.
Check for leaks while the engine is cooling.
16. After engine has cooled for several minutes, open
the petcock (7) on the turbo aftercooler. Allow air in
the system to escape. Close the petcock when
coolant starts flowing from the petcock. All air is now
purged from the aftercooler.
17. Allow the engine to cool. Check the radiator coolant
level again and top off as needed with a 50/50
mixture of ethylene glycol and water. Replace the
radiator cap.
18. The overflow bottle should be one-quarter to
one-half full. If not, fill as necessary with a 50/50
mixture of ethylene glycol and water.
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OM1300
Model MMV Rev. 12/04