Hey all,
First off, I know SOOO much more about my B7100 than I did a couple months ago when I bought it! My mechanic friend and I split my tractor to basically do an overhaul on the clutch and wound up replacing and/or machining just about everything from the flywheel and pilot bearing to the joint tied into the transmission. We finally got everything put back together over the past two days.
Topped off all my fluids, reconnected all the electrical components, and went to start her up. Turned right over and started, but started to sputter and die about 15 seconds later. Won't restart now, and there's a squeak that seems to go along with the cranking while the starter spins.
Immediate thought is a fuel flow problem, probably air in the lines (drained the tank and replaced the fuel filter during the overhaul). Following Vic's directions here on OTT (http://www.orangetractortalks.com/2008/11/how-to-bleed-kubota-fuelinjector-lines/), I opened up the 10mm bleeder bolt at the filter and have fuel flowing clean there. I can't get to the bleeder bolt on the pump itself because of the shroud (which I can remove with enough work, I'm sure), so instead went up to the injectors and opened up the nuts and pulled up the tubes enough to let air out.
When I crank it that way, I get just a little bit of fuel out of one of the injectors (the first one in the line), but nothing that I can see out of the other two. I cranked for about 30 seconds with that result. Occasionally (maybe twice) I get a small puff of smoke from the injector port, and there is a LITTLE black smoke coming from the exhaust, but it doesn't really smell like diesel.
Here's a quick video with the squeaking sound I get when starting.
http://www.youtube.com/watch?v=K5AUxgv1p34
In the video I state that the sound seems to be coming from the transmission, but that was incorrect (heard it better once I got on the other side of the tractor, and seems to be coming from near the fuel pump, but I'm not sure). I DO have too much fluid in the tranny right now (manual said 12 qt, but it overflowed at about 10, so I'll siphon that out soon enough).
Thoughts? Here are a few pics from my recent adventure. Can't wait to get this thing going, and appreciate your ideas or questions.
First off, I know SOOO much more about my B7100 than I did a couple months ago when I bought it! My mechanic friend and I split my tractor to basically do an overhaul on the clutch and wound up replacing and/or machining just about everything from the flywheel and pilot bearing to the joint tied into the transmission. We finally got everything put back together over the past two days.
Topped off all my fluids, reconnected all the electrical components, and went to start her up. Turned right over and started, but started to sputter and die about 15 seconds later. Won't restart now, and there's a squeak that seems to go along with the cranking while the starter spins.
Immediate thought is a fuel flow problem, probably air in the lines (drained the tank and replaced the fuel filter during the overhaul). Following Vic's directions here on OTT (http://www.orangetractortalks.com/2008/11/how-to-bleed-kubota-fuelinjector-lines/), I opened up the 10mm bleeder bolt at the filter and have fuel flowing clean there. I can't get to the bleeder bolt on the pump itself because of the shroud (which I can remove with enough work, I'm sure), so instead went up to the injectors and opened up the nuts and pulled up the tubes enough to let air out.
When I crank it that way, I get just a little bit of fuel out of one of the injectors (the first one in the line), but nothing that I can see out of the other two. I cranked for about 30 seconds with that result. Occasionally (maybe twice) I get a small puff of smoke from the injector port, and there is a LITTLE black smoke coming from the exhaust, but it doesn't really smell like diesel.
Here's a quick video with the squeaking sound I get when starting.
http://www.youtube.com/watch?v=K5AUxgv1p34
In the video I state that the sound seems to be coming from the transmission, but that was incorrect (heard it better once I got on the other side of the tractor, and seems to be coming from near the fuel pump, but I'm not sure). I DO have too much fluid in the tranny right now (manual said 12 qt, but it overflowed at about 10, so I'll siphon that out soon enough).
Thoughts? Here are a few pics from my recent adventure. Can't wait to get this thing going, and appreciate your ideas or questions.


