82
SEBU8603-01
Maintenance Section
Cooling System Coolant (Commercial Heavy-Duty) - Change
Install the belt. Refer to Disassembly and Assembly,
“Alternator Belt - Remove and Install”.
i04007090
Cooling System Coolant
(Commercial Heavy-Duty) -
Change
NOTICE
Care must be taken to ensure that
fl
uids are contained
during performance of inspection, maintenance, test-
ing, adjusting and repair of the product. Be prepared to
collect the
fl
uid with suitable containers before open-
ing any compartment or disassembling any compo-
nent containing
fl
uids.
Dispose of all
fl
uids according to Local regulations and
mandates.
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened
component life.
Clean the cooling system and
fl
ush the cooling
system before the recommended maintenance
interval if the following conditions exist:
•
The engine overheats frequently.
•
Foaming of the coolant is observed.
•
The oil has entered the cooling system and the
coolant is contaminated.
•
The fuel has entered the cooling system and the
coolant is contaminated.
Note:
When the cooling system is cleaned, only
clean water is needed.
NOTICE
When any servicing or repair of the engine cooling
system is performed the procedure must be performed
with the engine on level ground. This will allow you to
accurately check the coolant level. This will also help
in avoiding the risk of introducing an air lock into the
coolant system.
Drain
Pressurized System: Hot coolant can cause seri-
ous burns. To open the cooling system
fi
ller cap,
stop the engine and wait until the cooling system
components are cool. Loosen the cooling system
pressure cap slowly in order to relieve the pres-
sure.
1.
Stop the engine and allow the engine to cool.
Loosen the cooling system
fi
ller cap slowly in
order to relieve any pressure. Remove the cooling
system
fi
ller cap.
g02177998
Illustration 42
Typical example
2.
Open the drain cock or remove the drain plug (1)
on the engine. Also, remove the drain plug (2).
Open the drain cock or remove the drain plug on
the radiator.
Allow the coolant to drain.
NOTICE
Dispose of used engine coolant or recycle. Various
methods have been proposed to reclaim used coolant
for reuse in engine cooling systems. The full distillation
procedure is the only method acceptable by Perkins to
reclaim the coolant.
For information regarding the disposal and the
recycling of used coolant, consult your Perkins dealer
or your Perkins distributor.