Tuesday, February 10, 2015

2/9

One of the things that I'm trying to improve on is finding problems during a service. There's a lot to look for and a lot to know to the point of it being overwhelming. There's so much that you can miss, but at the same time you're trying to complete the service as quickly as possible.
ECM model number of a Heston tow truck.
Engine placard on a reefer.


Helped Lally line up his engine during his motor swap for an SSC truck.


Air leak in the air line in this picture

Another torque rod where the bushing is in really bad shape.

Loose nut on a driveline

Cracked cross-member that's been repair welded poorly

Same thing on the other side of the cross-member

Oil coming out of the exhaust



Bushings in these torque rods are shot. 


Monday, December 15, 2014

12/8

I ended up changing out a 5th wheel on a Semi. I had to use a heel bar to get the pins out of the bushings. It's heavier than it looks so I used the forklift to remove and replace it via a lifting pin. After assembling it I learned how to grease a 5th wheel properly.

I was asked to find an air leak on a 30 year old Kenworth owned by Tiger Construction. A co worker had spent all day on it and still couldn't find all of the leaks. He found some of them but the truck would still leak air overnight to the point of being empty. I ended up pulling up a schematic with Jeff and going over how the air system works and ways you can separate which system are actually leaking.

What I actually learned was using a schematic to systematically work my way across an air system until I found the big leak on this truck. I started from the Wet Tank and worked my way back until I found bubbles on the air lines after spraying with soapy water. It ended up being a section of air line near the rear axle. I couldn't tell if it was leaking due to chafing but there were many hose clamps on it in an attempt to repair it. Just that 8 feet of hose had over half a dozen leaks in it that were substantial. I replaced the air line with DOT approved 1/4" OD tubing which the truck didn't have on it to begin with. That's a violation and it wouldn't have passed a truck inspection at the scales.

Using a pin to lift off the 5th wheel.
Reused the bushings on the 5th wheel.








Monday, December 1, 2014

12/1

servicing turcks (PMI)

fuel filter

u joints and driveline

# 2 and 3 u joint after the transmission

slip yolks being out of spec (rocking inside the yolk)

broken  caps










Monday, November 24, 2014

11/24

ssc truck fabrication

mig weleding

checking air brakes

greasing

how the air brakes work

service brakes vs parking brakes

stroke, diaphragm, and sizing






Thursday, November 20, 2014

11/17

Excavator tracks

lvl tracks to proper tension

trunnion

ssc truck fabrication

excavator circuit

testing my system pump 1
Coupler for the transducer being used on the test port for my pump.
2 inches was the spec for this cylinder on the drift test. Pretty small.



Again same concept but a longer stroke
bucket cylinder.



You use a tape measure to measure the tension on the track shoes.
You need to have the tracks off the ground though when adjusting.

Transducer used for testing my system's circuit.
Tire stacking contest. I lost but at the same time I've operated a much larger
excavator successfully.
component identification.

11/10

Took out a semi truck module to swap out with one that was good to test and see if it was the module or another problem. The marker lights on the truck weren't working so Bruce wanted me to test the module.