INSPECTION
Turbocharger
1. Ensure that the turbine and compressor rotors turn smoothly.
2. Ensure that the actuator valve and waste-gate assembly operate correctly.
3. As the turbine is turned it should not bind at any point, there should be no side play, and there should be no axial play in the turbine/compressor shaft.
WARNING: IF THE TURBOCHARGER UNIT DOES NOT OPERATE PROPERLY, THE ENTIRE UNIT, INCLUDING THE ACTUATOR VALVE/WASTEGATE ASSEMBLY, MUST BE REPLACED.
Exhaust Pipes and Mufflers
CAUTION: Check the exhaust pipes, exhaust chamber, and left and right mufflers for any leaks or material that could make its way into the turbocharger unit. Also check the oil scavenge and oil supply lines for any leaks. Replace as necessary.
Actuator Valve/Wastegate Assembly Using the following procedure, check the pressure on the actuator valve.
1. Install the turbocharger pressure gauge (P/N YM-33076) and the dial gauge as shown below.
1. Turbocharger pressure gauge
1. Turbocharger 2. Dial gauge 3. Bellows pressure gauge 4. Relief valve 5 Actuator
|
Dial gauge read |
Pressure gauge read |
1.0 mm (0.04 in) 5.0 mm (0.20 in) |
67.7 ± 2.9 kPa 83.4 ± 6.9 kPa |
0.69 ± 0.03 kg/cm2 0.85 ± 0.07 kg/cm2 |
9.81 ± 0.43 psi 12.1 ± 1.00 psi |
CAUTION: Do not loosen the actuator shaft locknut. The shaft and locknut held fast by an adhesive. An attempt to force them apart will cause damage to the actuator diaphragm.
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