Combines TR 99 bubble up augerIJ

We just traded our tr97 on a low hour tr99 which had just had the bubbleup auger upgrade fitted. (the original must have been a real winner if this an upgrade) We heard of the trouble with the upgrade so checked ours out before it did any harvesting even taped the hex shaft with a hammer it seemed to be solid so adjusted the top auger to fit the uni joint onto the hex a bit deeper an all worked well for about 650 acres of barley then one morning the hex shaft sliped down the bottom auger shaft and stoped driving the top auger. (Apearantly paint is not good enough to hold the hex shaft up.)so to fix it we bored a 3_8 hole 3 1_4 inches below the top of the bottom auger shaft and put a 3_8 bolt through it to hold up the hex shaft so it cant fall down again, have only done a couple of hours with it since as we have had four wet days since fixing it. Hope this helps. I have been told that 5 out of seven around here have now failed. George

have heard of them being run by hydromotor before.Oil flow shouldnt be a problem as alot of 99 that i have seen are running hydro chaff spreaders that are plumbed into the block of outlets were the reel drive and comb lift come from on right hand side of cab, can control speed with manual valve. hope this helps.

We got the update as well, no big problems before. Since the update 2 augers have dropped that hex shaft and we are running the old auger now to finish the harvest. The vibration is shocking now as the hat mounts have cracked off ( replaced with heavier steel) and now the hat has cracked. I really wonder if there was any testing done with this update or did NH let us do the testing instead.

I have a tr-85 and had problems with the gear box that drove the clean grain auger, it would eat one every year. I put an angle iron across the top of the bin ext. and mounted a bearing there with a short auger down to the exsiting and coupled together with a universal. I"ve not had a problem for three years now.

I don't think that running a hyd. motor to run the bubble up auger will be satisfactory, if you want to get the oil supply from the reel drive. Remember, the reel drive hyd. pump only drives when the feeder house is engaged. When you are using the reverser to work a slug through, the bubble up would be stopped, then your clean grain elevator slip clutch would be going off. New Holland is once again working on a new bubble up style, which is supposed to be released before the '04 harvest. Rumor is it will be a campaign - which it should be. A good idea would be to simply change back to a similar setup as in a TR98, with only one auger.

I got the update done this summer before Wheat and after about 2500ac it shakes just as bad as before. I think "tv 140"s idea using the straight Auger as it is in the TR98 and adding a hydraulic bubbleup Auger is the best idea. Also there has to be a better and_or faster unloading System_Auger. I put new sprockets on at the start of the season and they are showing quite a bit of wear alredy. At the speed that Auger is running it should move a lot more stuff especially when the bin gets near empty.

Just inquiring, why do we insist on running this auger by hydraulicsIJ The latest bubble up gearbox is pretty much bulletproof, such as on the TR98. How many hours did you get out your unloading auger sprockets originallyIJ I am amazed to hear that these sprockets actually wear out.

You are right that the current bubble-up gear box is very reliable.They did two things to make it that way. first they reversed therotation so that the auger didn't try to throw grain back into the elevator. Secondly they finally taper the otput splined shaft so if the auger wasn't exactly straight it could move abit without binding the stub shaft eventually breaking it. The cain drive on the unloading auger is a weak point too. the drive sprocket wears rapidly. 400-600 hrs. is about it. We were replacing the original 16 tooth with a 18 tooth way back to the TR-97's. This improved the flow rate. We even tried a 22 tooth, but that was too much-didn't increase flow and the vibration was very bad. NH didn't accept this idea till the 99. The idea came from custom harvestors. We even had to find the part n from a chopper I think.

I put 300 seperator hours on the unloading sprockets and there is no way I can use them another season. I agree, if there is a way to do it without hydraulics is fine with me. NH has to get rid of that bend in the pipe. I am sure some grain is damaged because of that. Thanks Pete