Nice video. That fuel filter is a bear! A few comments: 2:55 yours is missing a hydraulic hose assembly with a steel elbow on one end and a cap on the other (or maybe it was added to later machines). You just pull out the end of the hose and remove the cap to drain the oil. When you're done, the hose just lays horizontally behind the engine. Bobcat P/N is 6572070. They have a real nice online parts book showing the parts breakdowns. I don't trust those oil change valves. If the valve leaks/gets bumped/vibrates open, the oil could drain without you knowing it. For much better access, change the fuel filter before you reinstall the hydraulic filter. Also, the coolant overflow bottle pulls right out - up and to the rear (I also remove the bracket, but YMMV. My battery is also on that side). The o-ring you pick up at 24:20 does not belong there. It goes on the filter housing at 26:46. I don't know why they don't give you the drain screw o-ring or the rubber washer on the bowl bottom either. You are correct about the primer bulb at 29:03. It belongs on the inlet side of the filter housing. 29:26 Don't need to take the line off the pump. There is a knob on the top of the injector pump, right where the fuel return line to the rear injector connects to the pump. Crack this valve open, and squeeze the primer bulb. This flushes the whole fuel system up through the return lines to the tank. When you don't hear any more air going through the lines, tighten the knob and the fuel system is bled. The worst thing is that there is a universal joint between the engine and pump. There are three fittings accessible by tilting the cab and reaching around the left side of the pump. They're real tough to get to, but they need grease.
Appreciate all the info. The drain hose you are mentioning doesn’t exist on my machine, may have been there previously. Those drain plugs I’m referring to have a cap that prevents it from opening and draining your crank case. Unfortunately this engine has a blown head gasket so I’ll be rebuilding it this winter, I’ll add that hose back.
Thanks, that was very helpful! You kept things very clean! I have 2 bobcat 743s, and getting ready to do that soon. Just fixed a wheel bearing on 1 of them, that was not much fun!
don't know if you'll see comments anymore but how the heck did you get the bolt into the base plug. can barely get both hands in to hold the bowl up and screw the top bolt let alone get the bolt aligned with the female thread in the top of the "base plug" edit: after posting that I went back out and tried again and the bolt found the base plug first time LOL now I'm wondering how tight I can go on the bolt without breaking the glass bowl...I have a tiny chipped area at the top edge of the bowl but the mating surface where the rubber gasket sits looks fine so I would think it should seal...but there's still a little wet after giving some pretty snug turns of the wrench....since there's two rubber gaskets I can imagine you need to tighten it up pretty good - just don't want to snap the glass bowl....any guidance?
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Nice video. That fuel filter is a bear! A few comments:
2:55 yours is missing a hydraulic hose assembly with a steel elbow on one end and a cap on the other (or maybe it was added to later machines). You just pull out the end of the hose and remove the cap to drain the oil. When you're done, the hose just lays horizontally behind the engine. Bobcat P/N is 6572070. They have a real nice online parts book showing the parts breakdowns. I don't trust those oil change valves. If the valve leaks/gets bumped/vibrates open, the oil could drain without you knowing it.
For much better access, change the fuel filter before you reinstall the hydraulic filter. Also, the coolant overflow bottle pulls right out - up and to the rear (I also remove the bracket, but YMMV. My battery is also on that side).
The o-ring you pick up at 24:20 does not belong there. It goes on the filter housing at 26:46. I don't know why they don't give you the drain screw o-ring or the rubber washer on the bowl bottom either.
You are correct about the primer bulb at 29:03. It belongs on the inlet side of the filter housing.
29:26 Don't need to take the line off the pump. There is a knob on the top of the injector pump, right where the fuel return line to the rear injector connects to the pump. Crack this valve open, and squeeze the primer bulb. This flushes the whole fuel system up through the return lines to the tank. When you don't hear any more air going through the lines, tighten the knob and the fuel system is bled.
The worst thing is that there is a universal joint between the engine and pump. There are three fittings accessible by tilting the cab and reaching around the left side of the pump. They're real tough to get to, but they need grease.
Appreciate all the info. The drain hose you are mentioning doesn’t exist on my machine, may have been there previously. Those drain plugs I’m referring to have a cap that prevents it from opening and draining your crank case. Unfortunately this engine has a blown head gasket so I’ll be rebuilding it this winter, I’ll add that hose back.
Super helpful video thanks for the effort you went to making it
Just purchased a used 743. This will be very helpful when I perform the first service. Thanks!
Thanks, that was very helpful! You kept things very clean! I have 2 bobcat 743s, and getting ready to do that soon. Just fixed a wheel bearing on 1 of them, that was not much fun!
Thanks good info
Thank you
Nice informative video, those fuel filters are always messy. Thanks for sharing!
Extremely helpful.
Thanks for this video and have a great day
don't know if you'll see comments anymore but how the heck did you get the bolt into the base plug. can barely get both hands in to hold the bowl up and screw the top bolt let alone get the bolt aligned with the female thread in the top of the "base plug"
edit: after posting that I went back out and tried again and the bolt found the base plug first time LOL
now I'm wondering how tight I can go on the bolt without breaking the glass bowl...I have a tiny chipped area at the top edge of the bowl but the mating surface where the rubber gasket sits looks fine so I would think it should seal...but there's still a little wet after giving some pretty snug turns of the wrench....since there's two rubber gaskets I can imagine you need to tighten it up pretty good - just don't want to snap the glass bowl....any guidance?
What are all the filter numbers