[AT] OT truck tires/driveshaft?

Cecil R Bearden crbearden at copper.net
Sat Oct 31 15:40:13 PDT 2015


John:
  What was the brand of those tires?  Where were they made?

Cecil in OKla



On 10/31/2015 7:14 AM, jtchall at nc.rr.com wrote:
> And the verdict is in, after over a year, it was the new, properly balanced,
> front tires. To those of you who remember this thread my grain truck had a
> horrible vibration, especially when loaded. I shuffled tires around on the
> back like crazy because they were old, mismatched and downright dangerous
> looking. Finally put a new set on the rear. I also put new shocks on the
> front. Studied driveshaft phasing and checked the truck. Jacked up one side
> of the rear so I could watch the driveshaft turn. It didn't matter what I
> checked, everything seemed OK. I was going to pull the driveshaft and have
> it balanced--would cost a little under $200 to do that. Dad convinced me to
> first put 2 old tires on the front that I had mounted for spares. Amazingly,
> those ancient, worn, mismatched tires got rid of the vibration. Put my new,
> balanced tires back on and it was back. I found a nice matched pair off a
> church bus on Craigslist, for less than I paid for one new tire. The dealer
> that sold me the tires switched them for free, the tire manufacturer would
> not give any refund. We hauled 8 loads of corn and everything seems to be
> working well. The only thing I can figure is a belt or something in the new
> tires was broke/breaking and the problem was steadily worsening. Anyway, I'm
> glad that is fixed, I was getting to the point I could swap those tires at a
> rate that a Nascar pit crew would call admirable!
>
> John Hall
>
> -----Original Message-----
> From: jtchall at nc.rr.com
> Sent: Sunday, May 11, 2014 5:29 PM
> To: Antique tractor email discussion group
> Subject: [AT] OT truck tires/driveshaft?
>
> Been a little quiet so I’ll throw a problem out looking for suggestions. Got
> a 74 Ford F-600 2 ton grain truck. Around 40 mph I get a BAD vibration
> (empty or loaded) It goes away around 50 or so. I put new tires on the front
> a couple years ago and moved one of the old ones to the back. Shortly
> thereafter we noticed the vibration. It seems to be getting worse. I had the
> front tires balanced last fall, didn’t help. I shuffled tires around on the
> back yesterday, can’t really improve the situation. I even tried driving
> with only the inside tire mounted, maybe some better, but not much. The back
> tires are not a matched set and are pretty old. I know it could use a set of
> tires but I’m trying to hold off a little while longer buying them. I jacked
> the truck up so I could look for runout and wobble. Some of the tires have
> wobble, some have runout on the diameter. One is perfect, but it is so far
> out of balance that with the truck in neutral, it settles to the same place
> every time—I even replaced this with a spare, still haven’t solved the
> problem. Would a set of new tires solve my problem or are big old trucks
> like this forgiving enough that I have other trouble? All the u-joints feel
> tight and I only notice a faint bit of runout on the driveshaft. An old
> timer told me he thinks I have a u-joint trying to lock up or a twisted
> driveshaft. Dad says they once twisted a driveshaft on a truck we had by
> popping the clutch when it started rolling backwards. Whats your opinion?
>
> John Hall
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