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Somewhat a CASE ?

D

Dale in Nw wa

Member
OK I have a Question? My 469 NH swather eats the bushings in the sickle Bar. I went out and cut about a 1/2 acre this morn. lost bushing, went in town got two more at 25 bucks a piece then went and paid 10 to get pushed in. thought about what is causing this sickle bar has been in use for a long time so went and got a new sickle bar put my new head on cut 5 acres lost new bushing. the guards are less than year old hold down clips and wear plates are ok anyone have a thought about what is causing this. OH and when I was cutting grass hay if I got into real short and real thick grass it would hammer real hard so I would drop to 1st gear in the DC as it is leading the 469 around. Thanks Dale Hubbard.
 
Dale: If the sickle bar is new, & guards are sharp, I'd say the sickle is out of "register". Full stroke left, sickle point should be centered under a guard, then full stroke right, the same sickle should be centered under the next guard right. Also, the best sickle section on the market is the Heavy, Top Serrated, Coarse Section.
 
I agree, it sounds like your knife is out of register, you have to have the wobble box in exactly the middle of it"s stroke before you tighten your knife bolt. Other wise the rubber bushing won"t twist the same amount both ways and will burn up in no time. Also check to see if your knife bolt is worn, you may need a new one if the bolt is out of round. I hope that this has helped you out.
 
The bolt was a brand new grade 5 bolt with double nuts got hot enough to raise a very large blister on finger it was that hot. Thanks for the info I never knew about centering it thanks Dale
 
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