Exhaust Cooler (Nrs) - Test - Perkins 854E-E34TA Systems Operation Testing And Adjusting

62
Air Inlet and Exhaust System
Illustration 55
Typical example
1. Disconnect the pipe for the boost sensor (1) at the
wastegate actuator (2). Connect an air supply to
the wastegate actuator that can be adjusted
accurately.
2. Install Tooling (A) to the turbocharger so that the
end of the actuator rod (3) is in contact with Tooling
(A). This will measure axial movement of the
actuator rod (3).
3. Slowly apply air pressure to the wastegate so that
the actuator rod (3) moves 10 mm (0.3937 inch).
Refer to Specifications, "Turbocharger" for the
correct pressure for the wastegate. Ensure that the
dial indicator returns to zero when the air pressure
is released. Repeat the test several times. This will
ensure that an accurate reading is obtained.
4. If the operation of the wastegate is not correct, the
turbocharger will need to be replaced.
5. Repeat steps 2 to 3 in order to repeat the pressure
test.
6. If the air pressure is correct, remove the air supply.
Remove Tooling (A). Install the pipe for the boost
sensor (1).

Exhaust Cooler (NRS) - Test

Air Under Water Leak Test Procedure.
1. Follow steps 1.a. to 1.i. in order to test the coolant
side of the exhaust gas cooler (NRS).
This document is printed from SPI². Not for RESALE
a. Plug the coolant inlet of the exhaust gas cooler
(NRS).
b. Plug the coolant outlet port with tube and
pressure regulator assembly.
c. Make sure that the air pressure regulator is
closed and connect compressed air to the
pressure regulator.
d. Use a suitable air supply in order to apply an
air pressure of 250 kPa (36 psi) to the exhaust
gas cooler (NRS).
e. While the exhaust gas cooler (NRS) is still
pressurized, submerge the cooler in water that
is at ambient temperature.
f. Allow the exhaust gas cooler (NRS) to settle in
order for the air that is trapped to escape.
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g. Observe the exhaust gas cooler (NRS) for air
bubbles that indicate a leak. If air bubbles are
seen within 3 minutes, this indicates a leak
with the exhaust gas cooler (NRS). Note the
location or the origin of the leak. Record this
information.
h. If no bubbles are detected after 3 minutes, the
exhaust gas cooler (NRS) is reusable.
i. Remove the exhaust gas cooler (NRS) from
the water. If the exhaust gas cooler (NRS)
does not leak, the problem may be elsewhere
in the cooling system or the engine. Refer the
service manual in order to check for leakage. If
the exhaust gas cooler (NRS) does leak, the
exhaust gas cooler (NRS) should be replaced.
2. Follow steps 2.a. to 2.i. in order to test the gas side
of the exhaust gas cooler (NRS).
a. Plug the gas inlet of the exhaust gas cooler
(NRS).
b. Plug the gas outlet port with tube and pressure
regulator assembly.
c. Make sure that the air pressure regulator is
closed and connect compressed air to the
pressure regulator.
d. Use a suitable air supply in order to apply an
i04552042
air pressure of 250 kPa (36 psi) to the exhaust
gas cooler (NRS).
e. While the exhaust gas cooler (NRS) is still
pressurized, submerge the cooler in water that
is at ambient temperature.
UENR0623