This week in class was a adventure. In my first class on Monday my group and I did a CAC (Charge Air Cooler) test. To do this test we had to disconnect the CAC from the turbo and intake then fit a OTC tester to one side and block off the other. We hooked a air supply to the test and regulated how much air going into the CAC (about 35psi) After we set the pressure to 35 psi, we shutoff the air and timed how fast the pressure dropped.(15 seconds) For the system to pass it could not drop 5 psi within 15 seconds. Which it did pass! We learned that the system can hold a lot more than 35 psi(had it up to 50) with out it failing. The test is really simple to perform.
Moving onto my second class we had to set the valve clearance on the N14. Everything was going smooth until we realized ( after the motor wouldn't turn over) that we didn't have the push tubes and rockers seated properly. We fixed that then found out that we were doing the intake valves,instead of the exhaust valves. We are still currently working on it this week.
No comments:
Post a Comment