Bolt Stretch Dry and Lubed Torqued to Failure

I took 4 bolts and torqued them both dry and lubed to failure to see the differences between the bolts. I started first with a 307A steel bolt at 2.26 in long and was torqued to failure dry at 64ftlbs with a overall stretch of 2.33in that's not that impressive of a bolt,lubed it did a little better and lasted until it got till 68.1ftlbs with not as much stretch as it had dry but still stretched to 2.28.Second on the table was a grade 5 bolt that was 2.285in to start and dry it failed at 134ftlbs and stretched to 2.35in, lubed it lasted to 87.7ftlbs and stretched to 2.32in. 3rd was a grade 8 bolt that started at 2.291in and after bieng torqued to 126ftlbs it failed and stretched to 2,33in. It didnt break off it stripped the threads out, lubed it lasted only to 115.4 ftlbs and stretched to 2.34in before it failed. 4th was the A325 steel bolt it started at 2.271in and dry it maxed out at 123ftlbs with a stretch to 2.26in, lubed it lasted to 122.22 with a failure at a max stretch measuring 2.29in.Its obvious to me that bolts lubed dont have the strength they do when dry on some occasions and they stretch a little bit more than they do when they are dry.

8 week
112 month

Keystock bending and twisting

Researched and checked different pieces of key stock and found the difference between two of them first was steel over-sized key stock part number 98830a610 its $1.56 a foot and it bent 90° at 130 ftlbs and broke after 1.5 turns at only 100ftlbs of pressure with the large electronic torque wrench.The second I did was with my group it was the Alloy steel over-sized key stock part number 99020a435 it was quite a bit more brittle and stronger obviously had more carbon in the steel it bent 90° at 165ftlbs and broke after only a half turn at 126.5ftlbs. I think that shows how the better the steel the more carbon is evident.Pricier steel is the way to go if its a important job your working on.

40 week
104 month

Cat recommended fuels

1. What is an ISO Cleanliness code?

                -ISO (International Standards Organization) is the protocol for expressing the level of contamination . The ISO code numbers correspond respectively to the number of particles grater than 4,6 and 14 microns 

2. What ISO cleanliness code does Cummins Inc recommend for their engines?

                -They recommend ISO code 4406

3. What are the specifications for the tank vent filter recommended by Cummins Inc?

                -98.7% efficiency at 10 microns

4. Briefly outline what Cummins Inc has to say about fuel additives. Be specific

                .-It Neither approves or dissaproves fuel additives any problems that occure while using additives is not covered by warranty.But they dont recommend fuel additives unless needed for specific applications.

5. Does Cummins Inc allow the use of bio-diesel?

                -Yes it does as long as its B100 Bio-diesel and its not recommended in low use applications such as standby power, recreational marine or seasonal applications.

6. Outline some indicators of microbial contamination of a fuel storage tank.

               -Filter Plugging and Corrosion

7. What is the amount of sulfur in low-sulfur diesel (LSD)?

              - Up to 500ppm Sulfer Content

8. What is the amount of sulfur in ultra-low-sulfur diesel (ULSD)?

              - Up to 15ppm Sulfer Content

9. What diesel fuels are currently available at the pump?

             - ULSD

10. What is the ASTM number for the Standard Specification for Diesel Fuel Oils? 

              -ASTMD975

40 week
64 month

Dec 2013 Commercial Carrier Journal

December 2013 CCJ has a interesting article about video based DRM (driver risk management) system. Its a forward looking and cab facing video system.It continuously records vehicle date ,audio ,and video. It records sudden lane changes acceleration or deceleration and rolling through a stop sign. The data is uploaded daily from the truck to a cloud like device that stores all of the data and its reviewed by the next day and given a score.Its going to stop the careless activities like talking or texting or just not paying attention which in turn will cut down insurance on these larger trucking companies. On the average a fatality costs a company around 7 million. I'm a firm believer that this will make people and truckers safer on the road.




I definitely learned that safety is paramount in any transportation business. I am a firm believer if you make drivers think that they are being watched at all times by big brother than they will  be driving safer by obeying all the laws of the rd,especially if they know they cant get away with anything.

McMaster-Carr

Worked through the box of fasteners using
McMaster-Carr    it was very useful at finding all the parts in the bag. There was a few that took some time to find i definitely learned a couple new fasteners. Ill be using it again for sure.

Wrench Cutout

I used the torch and cutout my wrench it was pretty rough but with plenty of work it will come out nice.

The Cat Contamination Control Compliance Guide

The Cat Contamination Control Compliance Guide is a useful tool if you can get through its lengthy massive 225 pages you will find useful rules and guidelines to keep a shop running smooth. This guide covers training ,equipment wash facilities and cleanliness from wash pads to clean paths to the shop, shop attributes including sealed floors and workshop doors dedicated pallets or blocks for support and storage, Shop practices like painted barrels or dumpsters, fuel injection test bench room with filtered incoming air supply and tiled floor,hydraulic cylinder rebuild area with storage rack to stack the sealed rods and much much more..
















24 week
24 month

Torch Time

Finally got some torch time yesterday and I found out I like it and might like to find a job in a shop that needs cutting for scrap or resell.

Goals of all this

I'm looking forward to getting my Diesel Technology degree so I can work in either the trucking industry, farming or possibly a scrapping company