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3.Podsoedinit indicator of crankcase gases to the nozzle discharge of crankcase gases and make the measurement. 4.Na idle pressure should not exceed 60 mm Hg 5.Pri increase speed to monitor the status indicator, his testimony should not increase, and ideally is a slight vacuum, ie the indicator fall to 10 mm Hg 6. If the testimony at increasing speed are increased, then there is a breakthrough of crankcase gases in the piston group. When spikes arrows can speak of a breakthrough of gases in one or more cylinders. Must be measured breakthrough crankcase gases at different speeds from 850 to 4500 rpm for a real picture of the piston. Method of diagnosing turbochargers for the engine: 1.Neobhodimo will connect to the system through the intake manifold tee, as the system must be airtight.
2. start the engine, allow engine to warm up to a temperature of 70 C. 3. check turbocharging: Yes. At the injection vehicles readings at idle speed should be in the Gaza evacuation of (green zone). On diesel vehicles readings fluctuate around 0. b.
For diesel vehicles readings may be in the range 0.5-0.8 bar at 2500-3500 rpm. at. On injection vehicles with smooth pressed the accelerator pedal to the engine speed of 2000 rpm readings up to 0-0.2 bar. In sharp pressed the accelerator pedal readings reach 0.5-0.7 bar and resets pressure because the engine is not loaded. Therefore, the injected car is necessary to diagnose the move. 4. check turbocharging: Yes. Necessary to bring the device into the car. b. Make measurements on the 2-nd transfer with maximum acceleration, while readings in the injection vehicles reach 0.8-1.0 bar and 0.6-0.8 bar for diesel. 5. After measurements, all connections to turbocharging to return to its initial state. Attention! If the turbo boost pressure for a diesel below 0.5 bar is necessary to give serious consideration to fuel equipment. If lower than 0.3 bar at a serviceable engine, the turbocharger needs repair. Attention! If the turbo boost pressure exceeds the maximum permissible parameters there is a high probability of failure of piston group (burn-piston). Technique for measuring radial and longitudinal backlash turbocharger. Without disassembly unit! 1. Necessary to dismantle the turbocharger engine. 2. Strengthen the unit (RIPL) for the measurement of backlash on the aluminum part of the turbocharger. 3. Set the measuring antenna device in the longitudinal course of protivohod turbocharger rotor and moving the rotor from the opposite side of the turbocharger axis reading of the indicator. 4. Set the measuring instrument antenna in protivohod radial run a turbocharger rotor and moving rotor from the opposite side of the turbocharger on radius of rotation to remove the indicator. 5. Set the measuring antenna device to the control surface of the rotor turning the turbocharger rotor turbocharger take readings from the indicator. Attention! Longitudinal gap is allowed no more than 0.1 mm Radial play turbocharger allowed 0,4 – 0,8 mm. Turbochargers with large numerical values than the tolerance be repaired by specialized companies.




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