I have a 2003 LB75. All of last summer it started without any problems, once the batteries were replaced. Then, around September, a new problem started to develop. It would get harder and harder to start, meaning that it would turn over fine, but not start. After a bit of cranking, it would sometimes start to catch, and the engine, somewhat firing, would help the starter make the engine turn over faster. However, if you let go of the key, the engine would not run on it's own. Then, trying to crank it again would require a jump or the charger to catch up bringing the batteries to full charge. If you jumped it, the engine would turn over again, and eventually start. Once started, it would run fine with lots of power and no performance issues; just don't turn it off.
Then, last month, 35 degree Wisconsin weather, It wouldn't start at all, even with a jump. It does have the cold weather package (air preheater). I read the owner's manual for cold temp starting. It said you can use ether once the preheater is disconnected. I removed the airfilters to make sure there was no restriction to air flow. The engine was blowing small amounts of soot out of the exhaust, and lots of black smoke when it was 'partially' running, along with the starter, but then the starter over heated and fried.
I replaced the fuel filter and filled it with fuel. I tried to manually prime the mechanical fuel pump, but after 3 minutes of pumping, never noticed any pressure building against the plunger lever. I replaced the started and tried the ether. It ran for 5 seconds, and then stopped. Would not start again...
Question time: I went over a service cd for this unit, but there is no mention of the fuel system, except to 'see dealer'. I know it has a mechanical fuel pump, located right below the fuel filter. Is it possible that the fuel pump is bad? Is there a way to test, or is it better to just replace? $50.
Is there an electrical fuel lift pump on this tractor? I find a listing for one for the LB's but don't know what years it applies to.
Where is the fuel shutoff solenoid located? Again, the manual I have doesn't show it...
Since this issue started before the filter was replaced, I'm not sure that air in the line was an original problem. However, the pump not being able to be manually primed; could that be an indicator that the pump was weak or worn, allowing fuel to leak back into the tank, and not being able to suck it up when needed to?
Would the soot and partial engine running be possibly from the engine and the injectors starving for fuel? I know my Ford diesel wants the right amount of fuel with the right amount of pressure before it wants to run...
Well, that's about it. I did watch a youtube video of a guy starting his LB, 30 degrees. He hit the key and it popped right off. Mine has never done that... even when it was warm out!
Thanks for your time.
By the way, except for the starting issues, I love this machine. We own a Deere 4wd w/front end loader, Kubota 4wd w/loader, NH skid steer and Komatsu dozer. Each one has areas where it out performs all of the others. The Lb is my favorite to run...
Then, last month, 35 degree Wisconsin weather, It wouldn't start at all, even with a jump. It does have the cold weather package (air preheater). I read the owner's manual for cold temp starting. It said you can use ether once the preheater is disconnected. I removed the airfilters to make sure there was no restriction to air flow. The engine was blowing small amounts of soot out of the exhaust, and lots of black smoke when it was 'partially' running, along with the starter, but then the starter over heated and fried.
I replaced the fuel filter and filled it with fuel. I tried to manually prime the mechanical fuel pump, but after 3 minutes of pumping, never noticed any pressure building against the plunger lever. I replaced the started and tried the ether. It ran for 5 seconds, and then stopped. Would not start again...
Question time: I went over a service cd for this unit, but there is no mention of the fuel system, except to 'see dealer'. I know it has a mechanical fuel pump, located right below the fuel filter. Is it possible that the fuel pump is bad? Is there a way to test, or is it better to just replace? $50.
Is there an electrical fuel lift pump on this tractor? I find a listing for one for the LB's but don't know what years it applies to.
Where is the fuel shutoff solenoid located? Again, the manual I have doesn't show it...
Since this issue started before the filter was replaced, I'm not sure that air in the line was an original problem. However, the pump not being able to be manually primed; could that be an indicator that the pump was weak or worn, allowing fuel to leak back into the tank, and not being able to suck it up when needed to?
Would the soot and partial engine running be possibly from the engine and the injectors starving for fuel? I know my Ford diesel wants the right amount of fuel with the right amount of pressure before it wants to run...
Well, that's about it. I did watch a youtube video of a guy starting his LB, 30 degrees. He hit the key and it popped right off. Mine has never done that... even when it was warm out!
Thanks for your time.
By the way, except for the starting issues, I love this machine. We own a Deere 4wd w/front end loader, Kubota 4wd w/loader, NH skid steer and Komatsu dozer. Each one has areas where it out performs all of the others. The Lb is my favorite to run...