Turbocharger - Inspect (Single Turbocharger) - Perkins 1204F-E44TA Systems Operation Testing And Adjusting

UENR4490-01
The following levels of boost pressure indicate a
potential problem with the wastegate actuator or
wastegate regulator:
• Too high at full load conditions
• Too low at all lug conditions
The boost pressure controls the maximum rpm of the
turbocharger, which controls the position of the
wastegate. The following factors also affect the
maximum rpm of the turbocharger:
• The engine rating
• The power demand on the engine
• The high idle rpm
• Inlet air restriction
• Exhaust system restriction
Note: Check the operation of the wastegate
regulator. Refer to Troubleshooting, "Solenoid Valve -
Test".
Check the Wastegate for Proper
Operation
Table 4
Part
Tool Number
21825617
A
Illustration 79
Typical example
This document has been printed from SPI2. NOT FOR RESALE
Required Tools
Part Description
Dial Indicator Group
g03706106
Note: The wastegate actuator is installed to the high-
pressure turbocharger.
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 1.0 mm (0.039 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).
Qty
Turbocharger - Inspect
1
(Single Turbocharger)
Hot engine components can cause injury from
burns. Before performing maintenance on the en-
gine, allow the engine and the components to
cool.
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened
component life.
Air Inlet and Exhaust System
i05934751
NOTICE
91