OPERATOR'S MANUAL

Preventive Maintenance Engine Cooling System
Medium Duty
(R05/09) Y53-6027 – 183 –
Cooling Hoses Check the radiator and heater hoses for leaks. X X
Extended Life Coolant (ELC)
Check the freeze point (see page 178).
X
Check for contamination using test strips (see
page 179).
X
Replace blank water filter if applicable. X
Perform lab analysis (see
page 179).
If lab analysis shows coolant is unsuitable for continued use
Flush, drain, and refill (see
page 178).
Add ELC Extender (see
page 179).
X
Flush, drain, and refill with new coolant (see page 178).
X
Fan clutch housing Check for air leaks. X X
Surge Tank Fill Cap Check fill cap seal at each oil change. X X X X X X