104 SEBU8603-01
Maintenance Section
Radiator - Clean
The following t
ext describes a typical method
of replacing coolant hoses. Refer to the OEM
information for further information on the coolant
system and the
hoses for the coolant system.
Pressurized System: Hot coolant can cause seri-
ous burns. To open the cooling system filler cap,
stop the eng
ine and wait until the cooli ng system
components are cool. Loosen the cooling system
pressure c ap slowly in order to relieve the pres-
sure.
1. Stop the engine. Allow the engine to cool.
2. Loosen the cooling system filler cap slowly in
order to relieve any pressure. Remove the cooling
system fil
ler cap.
Note: Drain the coolant into a suitable, clean
containe
r. The coolant can be reused.
3. Drain the coolant from the cooling system to a
level th
at is below the hose that is being replaced.
4. Remove the hose clamps.
5. Disconnect the old hose.
6. Replac
e the old hose with a new hose.
7. Install the hose clamps with a torque wrench.
Note: For the correct coolant, see this Operation and
Maintenance Manual, “Fluid Recommendations”.
8. Refill the cooling system. Refer to the OEM
information for further information on refilling the
cool
ing system.
9. Clean the cooling system filler cap. Inspect the
cool
ing system filler cap's seals. Replace the
cooling system filler cap if the seals are damaged.
Install the cooling system filler cap.
10. Start the engine. Inspect the cooling system for
leaks.
i04
245214
Radiator - C lean
Th
e radiator is not usually supplied by Perkins. The
following text describes a typical cleaning procedure
for the radiator. Refer to the OEM information for
f
urther information on cleaning the radiator.
Note: Some appl
ication 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 clean
ing.
Note: Adjust the frequency of cleaning according to
the effects o
f 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 pro-
tective fa
ce shield and protective clothing.
Maximum air pressure at the nozzle must be less
than 205 k
Pa (30 psi) for cleaning purposes.
Pressurized air is the preferred method for removing
loose de
bris. 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 b
e 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 th
e radiator is blocked internally, refer to the OEM
Manual for information regarding flushing the cooling
system.
After cleaning the radiator, start the engine. Allow
theenginetooperateatlowidlespeedfor3to5
min
utes. 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:
W
elds, mounting brackets, air lines, connections,
clamps, and seals. Make repairs, if necessary.
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