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Post by meskie on Sept 4, 2024 21:44:15 GMT -6
The knob that holds that panel on was missing so not sure what happened. Dad went to clean the rock trap after combining on some newer breaking and found that panel laying on the feeder cylinders.
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Post by kenmb on Sept 5, 2024 6:43:51 GMT -6
The washers are a good idea, none on mine but will add some.
Victory, the bushings were my first thought. Spent my time the night before crawling around and in combine to see if a bushing was bad or bolt fell out. All was good. Next morning I looked at that rock trap cover and was very easy to see the grain pan was hitting it in the center. Not much of a bend, 1/4 maybe 3/8" but that is all it takes. Then grain pan starts hitting it and something has to break. Important take away is not to reinforce those arms too much when they break - fix the real problem which is bent cover. Brought home a new spare, straightened mine and welded back together.
Yeah, I lost that hand knob also when both arms broke. I know I put it on and tightened it after fixing the one broken arm. I was going to replace it with 2 nuts and jam nut it, but once again, if something has to give I would rather the knob rattle off and get lost vs lock nut that down so something else gets damaged.
This is a design begging for an upgrade. I see no reason for that swing down panel. It's not a frequent service area. Make the stone trap floor out of 1/4" plate, a reinforcement bar under it. And bolt to either side of combine frame. If you want to pull that floor once a year or every 3rd year then spin out four bolts and pull it.
That top cab panel is also something to clean every couple years. I chalk that up to the poor cab filter design. Make sure area is clear of chaff and no wind blowing when pulling those filters otherwise any debris goes right into that HVAC box and then can start plugging stuff like drain holes. Mine needed a good cleaning.
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Post by kenmb on Sept 25, 2024 8:35:09 GMT -6
Doing brown flax now. Did a little straight cut last week but the 36ft honeybee was plugging the knife in the green straw so quit and swathed it all now. New to me header so likely needs new gaurds, the 30ft honeybee on swather was cutting 7 to 8 mph all day long everywhere through the field.
Smooth APs grates, APs doors closed. TM6 seives. Started out with concave at 10mm and then 8mm and just can't make that work for me, same experience as the 2388. Too much chaff and partial bolls in the hopper when going over the hills where seeds and straw are dried out. And lower capacity as a result of higher tailings.
Was out yesterday in the swaths and flax around 9% and not seeing much difference with concave between 15 to 22 mm. I seem to settle around 19mm for whatever reason. Cylinder at 840, no cracking so could go higher. Fan around 870, seives at 9 and 3mm. Rotors at 940. Really not seeing any losses on monitor with sensitivity at 85. The odd time can see rotor loss light up. Two rotor door open, there are 2 manual covers in place that I left in. Like to run 400 to 500 bph, have seen the display go up to 800 bph at times and tailing volume and losses don't really change. Much like the 2388, it's still tailings volume that slows the machine down.
Did some ground checking the other day and may see 3 seeds on the ground about an area the size of my hand, often less. Not the same as dropping pans but seems to confirm the monitor and its same method I used for 2388.
If I run fan down to 770 ish I see more chaff in hopper, running 930 doesn't seem to make much difference so I figure I may as well run a little lower so 870 ish is where I have settled.
Aside from being the only guy on the planet who doesn't close concave as tight as it goes and cylinder as fast as possible, any other opinions on what works for them?
If I see no seive loss on monitor, is it worth running tighter top seive? I suspect this is where pans would help as perhaps some partial bolls may go over seive and not trigger sensor, but that seem unlikely but without testing I don't know. How about fan speed, is that indicator for seeds in return of value - meaning does anyone adjust fan speed based on looking for that to go lower or higher?
Overall machine seems to be working ok. Straw not chopping and spreading as well as the 2388 but will extend stationary knives more today and could be a variety or straw dampness thing. Supposed to be sunny and 30c today so should see an improvement. Likely more about me learning the machine and knowing crop conditions year over year.
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Post by meskie on Sept 25, 2024 12:57:23 GMT -6
No experience with flax but I’d run tighter concave and up the wind to blow out the chaff if there is no sieve loss. I tend to run more wind and more open sieve then most guys.
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Post by SWMan on Sept 26, 2024 1:19:21 GMT -6
What is in the return? If there is unthreshed I would tighten to 7MM and rotors at max speed and cylinder as high as you can go without cracking.
On the loss I find the cebis settings are usually much too low for my liking, if sensitivity is at 65 you might be pushing some out the back and not know it. Been a few years since I did flax, but straw was green and I was getting rotor loss if pushed too hard. I usually have sensitivity at 80-85 under normal conditions and turn it down if I'm really in a hurry...ha ha
I suppose the intensive threshing segments could be installed to help threshing, I never used them personally though. I would run keystock APS grates with disawning plates closed.
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Post by kenmb on Sept 26, 2024 6:47:38 GMT -6
Set sensitivity to 85, up from 80. Can peg the seive loss monitor in a few places like where some Canada thistle went through, or cat tails so it is working. Rotor loss goes up to maybe 50% level at worst, running rotors at 1000 now. Look on ground and still have to look pretty hard to find a seed. So monitor seems accurate. Can't make it throw grain out, even with display showing 600, 700, 900 bph. Returns still limiting factor and it is what it is. Tried the 7mm and 550 cylinder, the 7mm and 870 rpm, finished day with 18mm and 790 rpm. Working fine. Great thresh on kochia and wheat grass too. A few whole bolls in the hopper but suspect those are getting past the cleaning system somehow. The 2388 was like that too, just couldn't get the last ones.
Were a few seeds to shake out of the tufts of straw from day before but yesterday was drier and chopper cutting better so only handful sized tufts to find and so no seeds to shake out.
Flax when dry is the easiest thing to thresh, a 2 year old can pinch a boll in their fingers and have it threshed. Wheat not so much, even yellow mustard takes more effort. It's the seperation that is the tricky part, and so tailings are the factor. A real tight concave works, but problem is breaking up the straw where over dry, no different than mustard/canola. Go easier on the thresh and it makes for better cleaning. More aggressive threshing just isn't solving my limits with tailings.
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Post by SWMan on Sept 26, 2024 20:02:10 GMT -6
Sounds like your conditions are much different than mine was, I couldn't hit it hard enough as it wasn't quite mature enough. The returns are small for a big combine, rarely is it a problem except maybe what you are doing and apparently sunflowers are almost impossible to do with a Claas.  |
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Post by kenmb on Sept 27, 2024 8:16:07 GMT -6
Yes, it's the overly dry straw areas that are the issue. At sundown yesterday went down to 12mm and up to 870 rpm on cylinder and getting good thresh with much less chaff. Straw pretty green in most places but was swathed about 5 days ago so still tough enough to not break up easy. But returns remain my limiting factor. Returns come down if I am in a nice swath of say 30 bu/ac and no kochia, can run 500 bph there. It's the drier hills and the kochia that throws the settings out the window. Very bad year to make a poor decision on spring burnoff. Got my service manuals yesterday, part #2926645 for 780 to 620 models. 13.5 kg of 3 binders, $520. Not the best laid out but better than nothing. Flipping through some this morning and does not go into a lot of detail on various things but it's still 3030 pages. Something to reference.
Tailings monitor warning was flashing in the one picture which is why it is at zero.
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