Does he have Service Maxx or Navistar Engine diagnostic software to perform an actuator output test, or an air management test? With a healthy engine, during an air management test, the engines runs at a higher rpm and produces about 8-12 psi of boost. The engine will test the egr valve, waste gate and back pressure valve one at a time. The program will have a bar graph of intake manifold pressure and exhaust back pressure during the test. When the egr valve is commanded open, the boost will slowly drop to about 2 psi, but you also hear the change in engine tone due to the exhaust recirculation through the engine. Then the valve closes and boost will return to about 8 psi and then the waste gate is commanded open. The boost will drop to zero until that part of the test is done. The gate is closed, boost returns to 8 psi and then the back pressure valve is closed. Boost drops to near zero and back pressure is usually over 20 psi. The other test is the actuator test. During the actuator tests, just the key is on and engine not running, but you need full air pressure built up first. You can exercise each actuator and actually watch it to see what is doing. Both the back pressure and waste gate linkages do get stuck sometimes and need some love taps with some penetrant spray to free up. Also, sometimes, the air control valve becomes faulty and does allows air to the waste gate all the time.
2013 INTERNATIONAL PROSTAR WITH MAXFORCE 13 MAKING WHISTLE SOUND WHILE ACCELERATING.
Discussion in 'International Forum' started by Sam718, Jan 15, 2019.
Page 3 of 4
-
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.
-
They still can’t figure out where is the air pressure leak coming from. Also My clutch was grinding whenever I shift the first gear and the mechanic said that wasn’t Normal and I had the clutch replaced 4 months ago. He said that he can add a metal plate to adjust the gap in the clutch and the sound will go away and that I may need to install one every 3 to 4 months. The grinding went away after the plate was installed but now I’m hearing a grinding sound from the clutch while the engine is idling and it goes away when I press the clutch. When I start the engine I hear a loud grinding sound but when I press the clutch it goes away. Can you please let me know what could be causing this? Here’s the picture of where he installed it.
Attached Files:
-
-
Yes they did a new Clutch break as well.. I just had a Road service come to take a look at and he said that the transmission is shot because there’s no oil in their and tracked the oil leak from where the Radiator is. He said when the new CAC and Radiator was Installed they didn’t install the fitting properly and that’s what killed the Transmission.
Attached the picture of it.Attached Files:
Heavyd Thanks this. -
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.
Page 3 of 4