Specifications

Engine Cooling System Preventive Maintenance
– 174 – Y53-6008A
Medium Duty (R05/09)
• The leading edge of any fan blade must be 1 in. (25 mm)
from the inside edge of the shroud.
Exhaust System
The exhaust system is part of the noise control system. Peri-
odically check the exhaust for wear and loose or missing
parts. For details, see
“Noise and Emission Control” on
page 251
.
WARNING! The exhaust piping, muffler, con-
verter muffler or independent converter become
extremely hot during engine operation and can
cause serious burns to the skin. Allow adequate
cooling time before working on or near any part
of the exhaust system.
Engine Cooling System
Your engine’s cooling system is standard with Extended
Life Coolant (ELC). ELC consists of a mixture of ethylene
glycol, water, and organic acid technology chemical inhib-
itors. ELC prevents corrosion and scale formation as well
as provides freezing and boiling point protection.
CAUTION: The engine cooling system has very
specific maintenance and inspection require-
ments. Failure to follow requirements can dam-
age the engine. Engine damage can include but
is not limited to:
• Freezing
• Boiling
• Corrosion
• Pitted cylinder liners
This information is found in the engine manufac-
turers owner’s manual. It is the owner’s respon-
sibility to follow all requirements listed in the
engine manufacturers owner’s manual.