All Those Teeth
Remember guys the circle has teeth 360 degrees. Those back teeth aren’t for looks, they’re made to be used. The practice of finishing a cul-de-sac in reverse or maybe even getting it close (my choice) makes great sense if you’re not running an all wheel drive machine. The forces created by the moldboard angle and laterally moving material over comes the front tires traction coefficient many times. It only takes about 60 seconds to turn it around. I can turn our 16 foot moldboard on our 14H around in about 70 seconds, just over a minute. That time includes the time spent pulling the pin and repositioning the linkbar. I always do it on the right side, I put the pin in the far right hole, swing the drawbar, circle and moldboard up beside the machine with the moldboard facing straight up at the sky, circle the moldboard clockwise and side-shift the left end out over the top of the right front tire completely retracting the cylinder (H Series), then retract the left lift cylinder, extend the right lift cylinder, keep rotating clockwise and retracting the centershift cylinder at the same time. It’s all simultaneous motion. This brings the right end of the moldboard (soon to become the left) under the S bend in the main frame while the left end (soon to become the right) is rolling right down behind and beside the right front tire. As soon as I get the moldboard back under the main frame I reposition the linkage if necessary. If the machine is equipped with grade/slope control then the cable to the rotation sensor has to be specially routed or it will get torn right in half. Every machine I operate I take the time to reroute the cable so that it’s possible to turn the circle and moldboard around. The picture below shows the way I generally park the machine at night; circle and moldboard facing back with the tires off the ground. This position exposes the front circle drive teeth so we can apply grease every day (like the book says). These are the teeth that are being used 99% of the time we’re working. Every couple days I scrap off the old dirty grease using a drywall spatula and every couple weeks I wash the teeth with solvent. This positioning also gets the weight off the tires at night. Don’t want any flat spots in the tires come morning. Many times we get in and have to start finishing to hubs first thing in the morning. In the last training class I taught I made it manditory to graduate. They had to be able to proficiently reposition the linkage, clean the top of the moldboard using the linkage, pull a back slope and park the machine at night with the moldboard facing back.
In the other pictures, which are dark, but if you look closely you can see the moldboard is turned around on the 16M. This works great for squeegeeing the water on top of the ice and filling the small holes and accelerating the freeze time. You can rub the ice (snow & water mixture) and not cut into it. Turning the moldboard around on this 16M with a 2 foot extension requires a little more caution and it helps if you run the front tires up on a pile, this makes it easier to swing the moldboard extension under the steps. It would be real easy to tear the steps right off the machine if you don’t know what you’re doing. That applies to any grader not just the 16M.
I also turn the moldboard around for finishing away from bridge abutments and will explain this more in detail later. I turn it around and articulate for cleaning some wet ditches also. Like I said they put those teeth there for a reason.
I will photograph this entire procedure step by step when I get time and post it. I will also add more to this thread in general, but right now I have to get ready to travel again.
This part is for all you younger guys that like adventure; I’m actually on my two weeks R&R from the Chevron project right now, but got a phone call yesterday morning. We were just awarded a hazardous cleanup project off the Northern coast of Alaska. It’s an old “Defense Early Warning” radar site. So I have to go get baseline blood work done today then spend the next 4 days in training, yeap right through the weekend so that we can be ready to fly back to Deadhorse the first of next week. We are going to haul the material 50 miles across the sea ice back to Prudhoe Bay where it will be put in special containment. I look at this as another great adventure, which I get to be a part of and the pay is fantastic (so is the food). They don’t call me to go on these details because they like the way I look or the things I say, they call me for one reason and one reason only; because I can operate a motor grader. My father told me over 30 years ago while I was riding in a grader with him and watching his every move, “Get good on one of these son and you will never have to look for a job”. That statement has rung true so many times in my life that I’ve lost count. It’s a great career! Don’t ever pass up the chance to get on one.
Regards, Randy
This is a good thread you started here. If everyone agree, and felt the same about everything then it would be a pretty boring place wouldn't it? 
