10.
Start the engine. Inspect the cooling system for
leaks.
i04245214
Radiator
-
Clean
The
radiator
is
not
usually
supplied
by
Perkins.
The
following
text
describes
a
typical
cleaning
procedure
for
the
radiator.
Refer
to
the
OEM
information
for
further
information
on
cleaning
the
radiator.
Note:
Some
application
will
require
a
fuel
cooler
to
be
installed.
The
fuel
cooler
is
a
type
of
radiator
that
uses
air
to
cool
the
fuel
and
the
fuel
cooler
will
require
cleaning.
Note:
Adjust
the
frequency
of
cleaning
according
to
the
effects
of
the
operating
environment.
Inspect
the
radiator
for
these
items:
Damaged
fins,
corrosion,
dirt,
grease,
insects,
leaves,
oil
and
other
debris.
Clean
the
radiator,
if
necessary.
Personal injury can result from air pressure.
Personal injury can result without following prop-
er procedure. When using pressure air, wear a
protective face shield and protective clothing.
Maximum air pressure at the nozzle must be less
than 205 kPa (30 psi) for cleaning purposes.
Pressurized air is the preferred method for removing
loose debris. Direct the air in the opposite direction to
the fans air flow. Hold the nozzle approximately 6 mm
(0.25 inch) away from the radiator fins. Slowly move
the air nozzle in a direction that is parallel with the
radiator tube assembly. The pressurized air will
remove debris that is between the tubes.
Pressurized water may also be used for cleaning.
The maximum water pressure for cleaning purposes
must be less than 275 kPa (40 psi). Use pressurized
water in order to soften mud. Clean the core from
both sides.
Use a degreaser and steam for removal of oil and
grease. Clean both sides of the core. Wash the core
with detergent and hot water. Thoroughly rinse the
core with clean water.
If the radiator is blocked internally, refer to the OEM
Manual for information regarding flushing the cooling
system.
After cleaning the radiator, start the engine. Allow the
engine to operate at low idle speed for 3 to 5 minutes.
Accelerate the engine to high idle. The high idle
speed will help in the removal of debris and the
drying of the core. Slowly reduce the engine speed to
low idle and then stop the engine. Use a light bulb
behind the core in order to inspect the core for
cleanliness. Repeat the cleaning, if necessary.
Inspect the fins for damage. Bent fins may be opened
with a “comb”. Inspect these items for good condition:
Welds, mounting brackets, air lines, connections,
clamps and seals. Make repairs, if necessary.
i03639888
Radiator
Pressure
Cap
-
Clean/
Replace
Pressurized System: Hot coolant can cause seri-
ous burns. To open the cooling system filler 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
pressure.
NOTICE
When any servicing or repair of the engine cooling
system is performed the procedure must be per-
formed with the engine on level ground. This will al-
low you to accurately check the coolant level. This
will also help in avoiding the risk of introducing an air
lock into the coolant system.
1.
Stop the engine and allow the engine to cool.
Loosen the cooling system filler cap slowly in
order to relieve any pressure. Remove the radiator
pressure cap.
2.
Check coolant level. Refer to Operation and
Maintenance Manual, “Cooling System Coolant
Level - Check”.
3.
Install new radiator pressure cap.
i02335775
Severe
Service
Application
-
Check
Severe
service
is
the
application
of
an
engine
that
exceeds
the
current
published
standards
for
that
engine.
Perkins
maintains
standards
for
the
following
engine
parameters:
124
SEBU8601-04