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Farm King Snow Blower
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tjdno1
Posted 1/5/2017 18:58 (#5746927)
Subject: Farm King Snow Blower


Cartwright, McKenzie County, North Dakota, USA		Have a snow blower that is breaking shear pins in minutes, with nothing much in the impeller. It has two 5/16" bolts for shear pins that are located in the front yoke of the pto shaft. I even tried using grade 8 bolts. Is there something missing, traveling as slow as possible, granted the snow is deep but I think it was made to blow snow as deep as the unit is tall. IT has two augers. The tractor I am using now has 150 pto hp, but have used 125 on it in the past. What am i missing to do to stop breaking pins.
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Wheat77
Posted 1/5/2017 19:01 (#5746935 - in reply to #5746927)
Subject: RE: Farm King Snow Blower


I had a 960 Farmking that did the same thing. I finally had to drill those holes to 3/8"
Grade 5, bolts.

Edit to add: There is a recent thread about shear bolts, see if you can find it. You need to
have full shoulder on the shear joint, no threads, and use knurled lock nuts if you can.

Edited by Wheat77 1/5/2017 19:04
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tjdno1
Posted 1/5/2017 19:04 (#5746947 - in reply to #5746935)
Subject: RE: Farm King Snow Blower


Cartwright, McKenzie County, North Dakota, USA		The casting is machined so only 5/16 nuts fit in the slot. Is that how yours was? I have thought about drilling them out another size or finding a slip clutch.
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Wheat77
Posted 1/5/2017 19:06 (#5746953 - in reply to #5746947)
Subject: RE: Farm King Snow Blower


Slip clutch won't work, you would have to bolt it solid anyway.
Drill it out.
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RRVND
Posted 1/6/2017 20:57 (#5749932 - in reply to #5746935)
Subject: RE: Farm King Snow Blower


We have one of these worthless blowers too. A couple highschool kids with shovels can move about as much snow as this POS. I thought about welding the shaft where the bolts shear but I am afraid that gearbox won't last very long.
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School Of Hard Knock
Posted 1/5/2017 19:15 (#5746980 - in reply to #5746927)
Subject: RE: Farm King Snow Blower


just a tish NE of central ND		I bet it blew less bolts at 125hp than it does now. Bottom line is snow takes POWER and there is a good chance your pins are maxed out with your horse power applied..
When I took my 145 hp 4450 off of our blower and put the 6400 on it because it has was slower reverse, the pins now last a long time.BUT< its only 80 hp tractor. I can almost use up a whole tank of fuel before pins go south now.

Edited by School Of Hard Knock 1/5/2017 19:16
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farmwithjunkrrv
Posted 1/5/2017 19:25 (#5747013 - in reply to #5746980)
Subject: RE: Farm King Snow Blower


South west of Winnipeg MB		I posted on other post I had this Lucknow on the 1086 for years and had the same trouble reverse was to fast for first time through after that would take less but not the same as now with the m9000 kubota with creep gear only break shear pin if I try to blow something other than snow. Use the creep if snow is much more than a 10 inches deep or so.
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spx4410
Posted 1/5/2017 19:23 (#5747006 - in reply to #5746927)
Subject: RE: Farm King Snow Blower


Sunny side of the Moose Mountains		Same here. Got frustrated enough that I drilled them all the way through and now use 3/8" grade 8 bolts.
Helps but they still manage to break. I check them every hour or 2 of blowing. It seems even with locknuts on them they seem to work their way loose.
Not sure what my next move will be other than trade it off for a schulte blower. They seem to be built more sturdy.
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Poverty Flats
Posted 1/5/2017 19:54 (#5747147 - in reply to #5747006)
Subject: RE: Farm King Snow Blower


SW Minnesota		We have had our Farm King snow blower for 15 yrs use a 160 hp tractor and use slow reverse with having sheared very few bolts. We have used grade 8 bolts from the start as that was what the operators manual called for.
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Jim in Sask
Posted 1/5/2017 19:53 (#5747142 - in reply to #5746927)
Subject: RE: Farm King Snow Blower


I've had better luck with Gr 5 bolts than Gr 8's. Also use locking nuts as stated - I find ordinary nuts will vibrate loose then break the bolt. Use a longer bolt so the shank extends most of the way through the holes, cut off some of the threads to fit. You have a big tractor on your blower - I run a 6400 JD on a 96" double-auger Farm King, usually the tractor runs out of power before the bolts go flying.

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John In Ontario
Posted 1/5/2017 19:55 (#5747153 - in reply to #5746927)
Subject: RE: Farm King Snow Blower



Ripley, Ontario Canada		A few things to check, one you are likely pushing the limit of 2 5/16 pins with 150 hp, but if you are breaking them empty that isn't the issue.

Is your shaft at a sharp angle? New tractor might have a higher pto. Is the shaft bottoming out (shouldn't break bolts but still check) pto/3pth dimensions are not standard like drawbars.

Are the holes true in the pto shaft, if they get wore that doesn't help.
Is the bushing good in the shear hub. If the hub is loose without bolts in it, that will take out shearbolts real fast. May have to get a machine shop to bore out yoke and put in new brass bushing. Does new tractor have a fast engaging pto or pto break? That can be enough shock to shear the bolts.
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tjdno1
Posted 1/5/2017 20:53 (#5747339 - in reply to #5747153)
Subject: RE: Farm King Snow Blower


Cartwright, McKenzie County, North Dakota, USA		I was breaking pins with the 4430 the tractor i was using is a 6195R and part of it is the tall pto that and the 46" tires they come with now. It has always broken the shear pins with very little in the impeller, if it was stuffed full I wouldnt complain as I would know why. I will check out the bushings, but next week my tractor will be back from the dealer and their new one will go back to them, nice demo. 7520 IVT had the bolster bushings worn out and wore into the housing, if you are running a loader on the mfwd check for bushing wear. The winter checkup special at Gooseneck Imp, cost money but money well spent.
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North Dakota JD
Posted 1/5/2017 20:57 (#5747361 - in reply to #5747153)
Subject: RE: Farm King Snow Blower


Had same problem only have 115 hp on ours doesn't even pull and they shear using correct bolts manual calls for. Drill out to 3/8 grade 5 and grind lock nuts on opposite sides to fit in that stupid slot. Only shear now because of operator error but we are not over powered.
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1156versatile
Posted 1/5/2017 20:50 (#5747325 - in reply to #5746927)
Subject: RE: Farm King Snow Blower


Strathcona, mn		I had a farm king 960 blower for years. I drilled through the yoke so I didn't use the slot for the nuts. Then a 5/16 bolt pulls on the barrel of the shank. A farm king is a decent blower but a full cut with it is asking a lot out of it.
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tjdno1
Posted 1/5/2017 20:57 (#5747359 - in reply to #5747325)
Subject: RE: Farm King Snow Blower


Cartwright, McKenzie County, North Dakota, USA		You didnt bore it out to 3/8? What grade bolts , do you use lock nuts then
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1156versatile
Posted 1/5/2017 21:33 (#5747497 - in reply to #5747359)
Subject: RE: Farm King Snow Blower


Strathcona, mn		No boring it larger just drilled all the way through the yoke to get away from sliding in the nuts. Used grade 8 5/16" bolts. Then the shear is on the barrel of the bolt.
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farmwithjunkrrv
Posted 1/5/2017 21:55 (#5747551 - in reply to #5747497)
Subject: RE: Farm King Snow Blower


South west of Winnipeg MB		Didn't realize it was that kind of set up with nut in a slot have that on an auger and bolt was just a little to long and bottomed out just before it got tight would break with hardly any load got the right ones no more trouble.
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tbeck
Posted 1/5/2017 22:12 (#5747600 - in reply to #5746927)
Subject: RE: Farm King Snow Blower



Culbertson, MT		Have a Farm King 960 on a 2wd 4250 making north of 150 hp. I've found that slowing the engine speed to 1700 rpm or so helps with the shear bolts. And use short grade 8 bolts with lock nuts per Farm King.
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Helland
Posted 1/5/2017 22:55 (#5747688 - in reply to #5746927)
Subject: RE: Farm King Snow Blower


SE ND		New to me 960 here, have gone thru four shear bolts already. One side of mine is 5/16 and other side must be 3/8 cause I cannot add 2 5/16 bolts to mine like book says. Anyone seen that?

Edited by Helland 1/6/2017 05:47
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garybergfeld
Posted 1/6/2017 05:22 (#5747839 - in reply to #5747688)
Subject: RE: Farm King Snow Blower


I got a farm king 960 4 years ago and had the same problem.so I welded the shear pin hubs together and its working great .I still ride the clutch when I'm making my first passs and everyonce a while I will shear auger pins.i have a NH TG215 on it and I like to run the pto about 600 rpms.which helps also
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