Front end wobble on unstyled W.C.

Hossman · Jul 18, 2011

Guys, Im workin on my Pa's old 36' unstyled WC an im currently tryin to fix a front end wobble that it has when you get her up in road gear. If you keep it at half throttle its ok but bump her up another notch and she starts the back an forth wobble. The steering wheel dont wobble at all it stays good an tight.Also the steering wheel dosent have much side to side "play" in it. When I lifted the front end and grab the front wheels there is 1-1.5" of free play before the it moves the steerin wheel.I took the plate off the front end and looked down on sector and worm gear mesh and it is pretty good an tight. Is it possible the bearing/bearings on the sector shaft is causing this? Also my book shows a lower bearing but no upper bearing but makes mention of an upper bearing, is there one or two? Sorry for the long post but was lookin for some info on this problem and maybe the proper way to remove the sector shaft. I think after removin sector gear you just pound it down an out but wasnt sure. Thanks for any help, Hoss

Aaron SEIA · Jul 18, 2011

There is a bolt in the bottom of the spindle assembly that you can remove and another one between the wheels. That should let the spindle drop off the bottom and you can pull the shaft out the top. I'm guessing the key and keyway is worn. Tightening the 2 bolts will probably take the play out for a while.
http://www.agcopartsbooks.com/PARTSBOOKSN/Viewer/book.aspx?book=agco/79001545

AaronSEIA

JMS/.MN · Jul 18, 2011

Often times the lower bearing gets "scalloped" from years of pounding across the fields. That will also make the front shimmy, worse at high speed or on blacktop roads.

bg/mo · Jul 19, 2011

yes the two bolts, especialy the one on the key that aaron is talking about will cause this. The bearing being worn will not.

Hossman · Jul 19, 2011

Fella's, Thanks so much for the info. Got everything out today(sector gear,sector shaft,bearing&race. I found the race and bearing pretty wore also some wear on sector shaft but not bad(.10,000ths) THEN i found a crack up the back of the cast pedestal from the very bottom runnin up to the first"boss" or ring thats moulded around the outside of pedestal.I think this crack is enough to let pedestal "spread" and the race of the bearing pretty much fell out.So im lookin at pullin the crack back shut "V" it out and have at it with the good ol nickle rod and see what I can do. Hopefully after I do the weld repair and replace lower bearing an race the problem will be solved. Thanks again, Hoss

Front end wobble on unstyled W.C.

Hossman

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Aaron SEIA

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JMS/.MN

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bg/mo

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Hossman

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