freightliner Custom Classic MT45 2022, Руководство по обслуживанию

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then at high idle for 1 minute. Return to
low idle for 1 minute.
8.3 Turn the engine off. Fill the surge tank to
the COLD MAX line. Install the radiator
cap.
Alternative Fuel Engine, 6.0 L
and 6.6 L
Refer to Fig. 1 when performing the following
procedure.
WARNING
Never remove the radiator cap while the engine is
operating or while the engine and radiator are still
hot. Scalding fluid and steam can blow out under
pressure if the cap is taken off too soon. Failure
to follow these precautions could result in serious
personal injury from heated coolant spray.
1. When the engine is cool, remove the radiator
cap.
Turn the cap slowly counterclockwise until it
reaches a "stop." Do not press down while turn-
ing the cap. Wait until any remaining pressure
(indicated by a hissing sound) is relieved, then
press down on the cap and continue turning it
counterclockwise.
2. When the cap is removed, run the engine until
the upper radiator hose is hot. This shows that
the thermostat is open and that the coolant is
flowing through the system.
3. Shut down the engine. Remove the lower radia-
tor hose and drain the coolant. Draining may be
speeded up by removing the plug from the bot-
tom of the water inlet.
NOTICE
During filling, air must be vented from the engine
coolant passages. Any air trapped in the system
can cause severe engine damage.
NOTE: The maximum fill rate of the radiator is 2
gallons per minute.
4. Connect the lower radiator hose and install the
plug in the bottom of the water inlet. Add water
until the system is filled and run the engine until
the upper radiator hose is hot again. The system
must be filled slowly to prevent air locks. Wait 2
to 3 minutes to allow air to be vented, then add
water to bring the level to the top.
5. Repeat the last two steps several times until the
drained liquid is nearly colorless.
6. Drain the system, then close the radiator and
block the drain valves.
7. Disconnect the hose from the coolant overflow
bottle. Remove the bottle and pour out any fluid.
Scrub and clean the inside of the overflow bottle
with soap and water. Flush it thoroughly with
clean water, then drain it. Reinstall the overflow
bottle and hoses.
NOTE: The maximum fill rate of the radiator is 2
gallons per minute.
8. Fill the system with a 50/50 mixture of antifreeze
and water to the base of the filler neck. Refer to
the engine manufacturer’s service literature for
approved coolants.
9. With the radiator cap removed, start the engine
and run it at low idle for 60 seconds. Increase
07/07/2015 f200861
1
2
3
1. Overflow Bottle
2. Overflow Bottle Fill Neck
3. Radiator Fill Neck
Fig. 1, Overflow Bottle
Engine Cooling/Radiator
20
Walk-In Van Chassis Maintenance Manual, January 2022
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