Do I need to drain the fuel tank to change the 3 fuel filters (fuel filter and water seperator) on a Hyundai 130 LC3 with a Cummins 4BTA3.9 engine?
I've never come across any full size excavator where you need to drain the fuel tank to change the fuel filter. I'm 99% certain that all you need to do is unscrew the old filters, clean the filter mounting base, put diesel on the new filter's gasket, and screw in the new filter. If the machine isn't equipped with a priming pump, you'll need to pre-fill the filters with diesel before screwing them in. Once the filters are in, you'll need to bleed the fuel system. On a machine with a hand operated priming pump: Just put the filters in without filling them with diesel, open the air bleed holes above the filters and on the injector pump, and pump till diesel starts flowing out of the first hole. Then close the bleed hole, and proceed to do the same with all the other bleed holes. Once done, start the engine and you're ready to go. On a machine without a priming pump (rare, but there may be some such machines. My excavator is missing its priming pump ointhead): 1. Make sure filters are filled with clean diesel before screwing them in. 2. Open all air bleed holes. 3. Have someone crank the engine till fuel starts coming out of the first bleed hole. Close the first hole, and repeat with all the other holes. 4. You're ready to go once you've bled all the air up to the injector pump.
Hmm, great, now where do I find the priming pump? Time to do some exploration. BTW its a '96.
should be realy close to the injector pump
If you have a copy of the operating manual, it may show you how to change the filter. I think Cat does.
well that wasnt so bad. Just followed the fuel line from the tank up to the engine. Looks like its right up close to where the fuel line goes into the top of the engine. Just finished changing engine oil, air filters, and 3 fuel filters. Looks like ill change the hydraulic fluid in a couple days.
Don't have to drain the fuel tank, but one thing you do want to do is drain the water/dregs from the bottom of the tank. That crud leads to all sorts of fuel issues.
What colour is your hydraulic oil? If it's dark brown, change it, but if its yellow or very light brown, you probably can do without changing it. You know that you will be dealing with 150+ liters (40+ gallons) of hydraulic oil. You'll need a huge container to store and transport the old oil, and that much new oil isn't cheap. What I do suggest is that you change the main hydraulic filter and the pilot filter. That isn't too hard to do. And as ATCO says, drain the water and sediment from the bottom of the fuel and hydraulic tanks. You don't have to drain the entire tank, just the junk forming a thin layer at the bottom.