3Com Caterpillar Commercial Diesel Engine SEBU6251-06 - Manual (Page 28)

28
Maintenance Section
Cooling System Specifications
Table 15
Example Of The Equation For Adding ELC
Extender To ELC
Total Volume
of the Cooling
System (V)
Multiplication
Factor
Amount of ELC
Extender that is
Required (X)
946 L
(250 US gal)
× 0.02 19 L
(5 US gal)
NOTICE
When using Caterpillar ELC, do not use standard
SCA’s or SCA filters. To avoid SCA contamination of
an ELC system, remove the SCA filter base and plug
off or by-pass the coolant lines.
ELC Cooling System Cleaning
Note: If the cooling system is already using ELC,
cleaning agents are not required to be used at
the specified coolant change interval. Cleaning
agents are only required if the system has been
contaminated by the addition of some other type of
coolant or by cooling system damage.
Clean water is the only cleaning agent that is
required when ELC is drained from the cooling
system.
ELC can be recycled. The drained coolant mixture
can be distilled in order to remove the ethylene
glycol and the water. The ethylene glycol and the
water can be reused. Consult your Caterpillar dealer
for more information.
After the cooling system is drained and after the
cooling system is refilled, operate the engine while
the cooling system filler cap is removed. Operate
the engine until the coolant level reaches the normal
operating temperature and until the coolant level
stabilizes. As needed, add the coolant mixture in
order to fill the system to the proper level.
Changing to Caterpillar ELC
To change from heavy-duty coolant/antifreeze to the
Caterpillar ELC, perform the following steps:
NOTICE
Care must be taken to ensure that fluids are contained
during performance of inspection, maintenance, test-
ing, adjusting and repair of the product. Be prepared to
collect the fluid with suitable containers before open-
ing any compartment or disassembling any compo-
nent containing fluids.
Refer to Special Publication, NENG2500, “Caterpillar
Tools and Shop Products Guide” for tools and supplies
suitable to collect and contain fluids on Caterpillar
products.
Dispose of all fluids according to local regulations and
mandates.
1. Drain the coolant into a suitable container.
2. Dispose of the coolant according to local
regulations.
NOTICE
Do not leave an empty SCA filter on an ELC system.
The filter housing may corrode and leak causing an
engine failure.
Remove the SCA filter base and plug off or by-pass
the coolant lines.
3. Remove the empty SCA filter and remove the
filter base. Plug the coolant lines or bypass the
coolant lines.
4. Flush the system with clean water in order to
remove any debris.
5. Use Caterpillar cleaner to clean the system.
Follow the instruction on the label.
6. Drain the cleaner into a suitable container. Flush
the cooling system with clean water.
7. Fill the cooling system with clean water and
operate the engine until the engine is warmed to
49

to 66

C (120

to 150

F).
NOTICE
Improper or incomplete rinsing of the cooling system
can result in damage to copper and other metal com-
ponents.
To avoid damage to the cooling system, make sure
to completely flush the cooling system with clear wa-
ter. Continue to flush the system until all signs of the
cleaning agent are gone.