Intake Air System Pressure Test
INTAKE AIR SYSTEM PRESSURE TESTPOSSIBLE CAUSES
- Charge air cooler pressure test
Diagnostic Test
1. CHARGE AIR COOLER PRESSURE TEST
Loosen air inlet tube clamp at the turbocharger.
Remove the air filter housing and the inlet tube from the vehicle as an assembly.
Install the CAC Pressure Tester #9022 into the inner diameter of the turbocharger, securing it in place with the supplied three-fingered band clamp, tighten tool clamp to 8Nm (72 in lbs).
NOTE: Never attempt to start or run the vehicle at any time during this test, engine damage may occur.
Fasten the safety chain around a solid surface behind the turbocharger.
Warning: NEVER RUN CAC PRESSURE TEST WITHOUT THE SAFETY CHAIN SECURELY FASTENED.
Before attaching shop air to the pressure regulator verify that the regulator is at its lowest pressure setting (0 psi).
Attach an air supply to the regulator and slowly increase the pressure until the pressure gauge reads 20 psi.
WARNING: NEVER APPLY MORE THAN 20 PSI.
Using a solution of soap and water spray the Turbocharger, Turbocharger wastegate, Charge Air Cooler Heat Exchange and CAC Hoses while watching for leaks.
Before any attempt to repair the CAC system is made, its necessary to completely discharge the system. This can be accomplished by turning the regulator knob counter-clockwise.
Allow for adequate time to pass before removing the CAC Pressure tester from the turbo charger inlet.
Position the Air Filter Housing over the three mounting studs located on the inside front fender well and press down firmly to lock housing into place.
Install Air Inlet Tube over the Turbocharger inlet and torque the band clamp to 35 in.lbs.
View Repair
Repair
Test complete.
Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Powertrain Verification Test - Ver 1