Posted by NCWayne on May 20, 2011 at 21:13:14 from (166.82.187.163):
Got a call this morning from a customer with a mini excavator they couldn't get started. The info I was given was that the machine had been running and was cut off and now wouldn't restart. So I loaded up and headed that direction. The first thing I did when I got there was turn it over and notice there was no smoke from the exhaust when doing so. So I broke the injector lines loose and saw there was no fuel getting to the injectors. Since each pump is individual I knew it had to be something common to all three pumps so I checked the fuel level. There was plenty of fuel, and the electric transfer pump was working, so I moved to the next obvious thing, the fuel filters. I checked the primary screen and the filter and both looked OK so I moved to the next thing which was the fuel shutdown solenoid. I had power going to it so I thought it must be bad. With it pulled from the engine the engine should start but again it wouldn't, still no fuel to the injectors. So I put it back in and 'scratched my head' trying to figure out what I had missed. Then I happened to notice that the levers on the two filters were in different positions. When I checked them earlier I only turned off the one on the primary filter screen as it fed out into the other filter housing so effectively cut the fuel off to both when it was closed. It took a bit of doing to get my head cocked around were I could see the instructions on the filter housing but once I got them in sight it was obvious that the valve on the secondary filter housing had been turned off. So, I gave it a quarter turn, blead the lines, and she fired up in short order.
Given the info I was supplied with in the call all I can figure is someone decided they wanted to go home early Friday and did the one thing nobody would think to look at on a machine that had been running not to long before to shut it down...... I guess it just goes to prove when you think you've seen it all someone goes and comes up with something new for you to check out...
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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