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Updated 4-16-08 ZF - IFS Wheel Wobble - Balancing Issues?
ZF - IFS (in red) Several owners have reported wheel balance issues on the front wheels with the ZF- IFS. After many inputs from owners on the FCOC Yahoo group, it seems that the recurring balance issues may be caused by a wheel centering issue, i.e. the wheel doesn't always center on the hub when mounted.
Most of us have seen the lug nuts on our cars...the nuts are tapered, thus centering the wheel on the hubs as we tighten down the lug nuts...assuming we do it in a cris-cross pattern as recommended by car mfg. Truck lug nuts are not tapered so other means have to be used to insure the wheel is centered when re-mounting the tire/wheel. FCCC informs me that the Metric hubs & wheels switched to SAE on June 5, 2006 when the wheel cut went from 56 to 60 degrees. The differences (wheel vs. hub) are subtle and may not cause a problem. For example, my '04 Evolution FCCC chassis developed a minor 'wobble' at only 1200 miles. After the RF wheel was removed and checked (no balance was performed because the tire dealer did not have an 11" center adapter hub to fit the Accuride wheels), after remounting the wheel, the problem went away. Last year I had the front tires upgraded from LRG to LRH...the tire dealer mounted the new tires, balanced them off the coach, remounted the wheels with no problem...I got lucky. Another owner reported - http://autos.groups.yahoo.com/group/FCOC/message/1041
"I have had a shimmy at 60 to 70 MPH
for the last year and I have Several other owners have reported similar problems with equal frustration. Possible Solution - thanks to owner Steve Hample for the following information. Steve says he has used the external centering lugs for over a year and says they work really well. Tru-Balance Truck Wheel Centering Products - http://www.tru-bal.com/index.cfm
When ordering, tell them you are a FCOC member and they should give you a 10% discount on parts.
To see how the products work - check it out, I think they have the answer. http://tru-bal.com/index.cfm/fuseaction/category.display/category_ID/177/How_it_works.cfm If my problem returns, I plan to give these products a try. Thanks Steve for the heads up...such a simple solution for such a dumb problem. Updated 4-16-08 Posted 9-03-07
Owner testimonials - Here is some actual experience from FCOC members on the FCOC Yahoo Group. #1
I have a 2005 Mandalay and have experienced a shimmy from
day one. I
This year I saw several postings concerning a product called TruBalance. I was very skeptical about dishing out money for something as simple as a couple of sets of bolt sleeves to ensure real wheel centering. I decided to try it anyways because the constant shimmy was bothersome. I went to a truck shop in Chillicothe MO who deals in that product and had the external sleeves installed on the front tires. The long and short of it is that the two sets of sleeves and the labor to install them cost me about $100 and one thousand miles later the problem
has not happened again. Money well spent and I am very satisfied with the
results.
Alex 05 Mandalay 40D Posted 10-20-07
#2 I just installed the Tru-Balance external sleeves on my wheels
and “it” will take out all the vibration.
Posted 10-20-07
#3
In my discussions with Freightliner, they made me aware of a product that they felt would do away with the problem. The product can be found here:
http://www.tru-
If you have a Tru-Balance story to share, send me an email. Rick Kennedy |
