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Bolt Problems Dual Hubs

M

Moonlite37

Well-known Member
I Have a friend I am trying to help. He has a set of hub mount duals with the screw in lug bolts that have stripped in the hub. I have told him that I can drill the damaged hub threads and install grade 8 bolts and fit with coned klug nuts. Second thoughts I remember in years past I had trouble with heavy truck broken lug bolts because I had not been driving the studs in thoroughly with a sledge hammer. I am afraid that the bolts will not fit the holes in the hubs tight enough. T do not know if there is a size of drive-in lug bolts at the truck/trailer parts store. Also considered knurling bolts with my lathe but I do not know if a grade 8 bolt can be knurled. Anybody had this situation?
 
Helicoil never gave me much but grief, I like your idea of bolts from the back or drilling and pressing studs. The stud breakage from not driving them in all the way is simply cause they loosen up as they go in the rest of the way.
 
It can be a big change, but we went to all 10 bolt heavy duty hubs even on the 4020,,got tired of the light duty 9 bolt set up,, we had a 8430 back in the day that had 9 bolt hubs, it was a constant battle keeping them tight,,never had an issue with the 10 bolt set up..
 
I second the 10 bolt hub idea. We fought with 9 hole hubs for years on a D21 Allis. Either go to the 10 bolt or maybe drive new studs in. If I remember right, there are 3 hols=es that don't go all the way through?
 
Another thought to repairing what you have is to have a machine shop make you a stud that was a larger size on one end and drill your bad hole out and thread it to match the special stud.and use a lug nut on the rim side of the stud....just a loose thought..
 
Well how much do you want to spend to fix ??? i had a set that i bought at a sale that ran really late into the night and never buy under the flashlight . all the holes were stripped out . well i had them and what i did was i drilled them out and installed Keen serts , ya only need the special driver to set the locks . Ya use the regular drill bit for the size of a standard tap hole and tape with a standard tap . You then screw the keen sert in with your fingers and get it flush with the serface then install the drive tool and hit with a hammer to drive the locks in . Keenserts are better then grade 8 . So now you can go back to the wheel bolts or you can install standard wheel studs , your option here . If the day ever comes when the keensert strips out you just drill down thru it take a chisel and fold the locks inward and screw the old out and screw a new one in .
 
I have both keenserts and helicoils. I think the keensert are a more durable option. You just need to drill a bigger hole. On most things I use helicoils. There is one called recoils, I like them too.
 
Next time I'm near it I'll take a picture...they look a bit big on there but they will stay tight..
 
I snapped a few pictures this evening, the 4020 hubs have thick halves in them, as you can see and they are Deere hubs..
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Thanks Tim, Been around Deeres all my life and you have the only set of 10 bolt 3 an 3/8's I have ever seen. We have never had problems with the nine bolt hubs. I bought the 4630 from my Dad and he had 24.5 x 32 tires and never had trouble. I bought it from him in 87 and switched it to 18.4's so I could plant with it--no trouble. Still have the hubs on my pulling tractor. Thanks again-----Tee
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