Jake Brake check on a Cat

This week in class my group and I started working on a Cat C-12. The C-12 is on a stand and has everthing to make it run icluding the computer which we have to figure out why it isnt reading right. We didnt have very much time on it so this week we are getting down and dirty with it.

It Runs!!!

This week on WSCC Diesel Family my classmate and I get the N14 running. After last weeks episode we decide to redo the over head on the N14. My classmate and I set the overhead on all of the valves we messed with. It was time consuming but we got it done and it runs!

N14 overhead set and CAC testing

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.

N14 Injector Removal

This week in class my group and I worked on a N14 Cummins. I have always liked the N14 because it reminds me of a old 12-valve Cummins, really simple to work on and simple mechanics. This class period we had to take three of the injectors out. We started by shutting off the power to the truck by switching the battery disconnect to the off location. I really find the disconnect interesting and thinking about getting one for my car. After that, a team member and I started disassembling the valve cover. First we removed the bolts then we had to remove the engine brake assembly for each part of the valve train. After finding the right socket, it was apparently hard to find a 7/16 12-point socket so it took longer to remove those but we finally did. Then it was onto the rocker assembly. We first removed the bolts and with a little motivation and some paint markers to remember where they came from we finally got those out. Lastly, it was time to remove the the injectors. We removed the injector retaining clip and used a crows foot to "pop" the injectors out. 

So, what I learned is that the N14 is a real simple design and the correct procedures in how to remove its injector. 

Installing thermostat and fuel filter.

After removing the thermostat and making sure it worked properly by heating water with a torch and watching it open we had to install it back on the truck. After installing the thermostat into the housing we bolted everything down to specs and used a neat little tool to refill the cooling system. We used a tool that plugged the coolant reservoir then used shop air to create a vacuum pulling the coolant out of the containers and into the coolant reservoir. After we found the leaks of course. After refilling the coolant we checked for leaks and everything was good. That ended the first class of the day. The second class was fuel systems. In this class we replaced the fuel filter and primed it on a  series 60. We also looked at our new Snap-on tool we got and let me tell you that diagnosis

machine is crazy. It can read everything the computer sees.

Learning Begins

This blog is for both of my classes with Starkey. This week in class we learned how to take a fuel tranfer pump off using our service literature and remove the thermostat. Sorry no pictures

New beginnings

Welcome to the new year of school. This class is going to be a blast. Diesel tune up and Maintenance. This week in class was just introducing everyone and getting settled in. Have some pictures of the. We year.