Yoke

Today I pulled in a truck and the second axle rear end yoke was loose. So I popped off the drive and got my impact on the nut and tightened it down. To take the drive shaft off I used a little bottle jack near the u joint to relieve the caps. Then I used a big bar and hit the yoke to pop the caps off. I inspected the u joint and after I installed it I made sure grease was coming out of all four out lets. And inspected the yoke after installing the drive line and the problem was solved. Here are some pictures.

Clutch

At school I got to take out a transmission and "change" the clutch. I tool out the transmission learning tricks and ways to set my jack so it's easier to install the transmission. I also learned how to take out the pilot bearing I had never done that before Jeff showed us how to us the bearing puller. I learned a different way to install a clutch on the fly wheel the way I did it but some people like to put it together on the transmission out side then install everything at one time. Also I learned how to do measurements before installing the transmission I has never done this before. I had to go through the service information so I knew what to measure. For example the fly wheel, the bell housing, pilot earing housing, etc. Here are some pictures....

Electrical and lighting problems

Today I brought a truck in for inspection and first thing I do is check the lights. One of the fog lights was not working. So I started looking at the light I saw that the ground was very corroded and bad looking. I disconnect the light from the butt connectors and it had power coming in from the main line. So I know the problem is from the wires coming from the fog light. Two problems the butt connectors that connect the main power supply wires to the fog light wires has croshion and green stuff in it. And the wires had rubbed through the rubber sleeve to help keep water out. I put new butt connectors and heat shrinked the bad wire. Here are some pictures....

Set up 

Main power supply for the fog lights.

 Wires from the main power to the fog light. 

Fixed where the wire rubbed through 

New butt connectors and the light works

I also had a truck come in today because  every time the driver hit the brakes the left turn signal would come on. I had to think about this for couple minutes I had never seen this before. After about 30 minutes of investigation I found that the trailer cords yellow wire had come out of the connector that plugs into the trailer. And because of that the left turn signal would go off when the driver hit the brakes. So I recut the wires replaced the old dirty plug with a new one and the problem was fixed.

Self study's answers and wheel bearing adjustment.

Cab heater core

I worked on a truck this week that I brought into the shop it had coolant leaking on to the fuel tanks. I investigated that and it was heater core for the sleeper. I have done the main heater core job before so this was easy. I took the heater core out of the cab and making sure I kept my work area clean because I was working in a cab that a driver called home. The job took about two hours and went smoothly. Here are some pictures.....

Also in school I have been learning a lot about wheel end adjustments and hub lock but adjusting. Also s cam wear. I have done all these things but now I have a reference or a nation wide standard. For example with a dail indicator you can measure how tight your lock nut is supposed to be between 1-5. I have a lot more research to do on s cams which I will post about in the next blog. I am hoping to be able to use all these standards at my work place if possible. Here is a picture of my teacher teaching us how to use the dail indicator....