IC Bus CE Series 2020, Руководство по эксплуатации и обслуживанию

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Maintenance
To function properly, the coolant system must be completely filled
with coolant and all air must be expelled. To accomplish this, the
following procedures should be carefully completed:
1. Open the Heater Core Supply cutoff valve (page 123) .
2. Close the Heater Core Return cutoff valve (page 123).
3. Open the Heater Core Return Bleed Valve.
4. Fill the system to top of the fill neck in the Deaeration
tank. Use a 50/50 mixture (75/25 if it has been flushed
with water) of the proper coolant concentrate (refer
to
Lubricant and Sealer Specifications in section
Maintenance Intervals and Specifications ) and
demineralized or distilled water into the deaeration tank.
A 50/50 coolant mixture will achieve a -34°F (-37°C)
freeze point. The first pour should reach to the top of
the reservoir fill neck.
5. Turn on engine and operate at low idle.
6. Maintain coolant level above the add line as the bottle
level draws down.
7. Increase engine speed to 1,000 rpm.
8. Continue to operate the engine at 1,000 rpm and
maintain bottle level above the add line until the heater
core return bleed valve begins to purge fluid.
9. Return engine to low idle.
10. Close the heater core return bleed valve.
11. Open the heater core return shutoff valve.
12. Raise engine speed to high idle until coolant
temperature reaches 190°F (88°C).
13. Continue operating engine for an additional five (5)
minutes after coolant temperature reaches 190°F
(88°C).
14. Return engine to low idle, allow engine to cool and shut
down.
15. Top off coolant level to COOLANT MAX line (1) on the
dearation tank.
16. Install pressure cap.
17. Let engine completely cool. Recheck coolant level and
concentration / freeze point with a refractometer and top
off as needed to achieve a coolant level at the COLD
MAX line when cold.
Coolant and Optional Coolant Filter
IC Bus recommends using only approved coolant with 2010
cooling packages, and will not warrant cooling systems that
have not utilized the recommended coolant.
The label on the deaeration tank provides additional coolant
/ antifreeze information. Consult the
Engine Operation and
Maintenance Manual for coolant service life details.
Some engines are ordered with an optional coolant filter that
should be replaced periodically.
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