Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×


Reply
 
Thread Tools Display Modes
 
Old 10-11-2017, 07:51 AM   #1
Bus Crazy
 
JDOnTheGo's Avatar
 
Join Date: Feb 2017
Location: The West
Posts: 1,209
Year: 1998
Coachwork: MCI
Chassis: 102 EL3
Engine: DD 60
Elusive Vibration - Wheel Centering

Howdy all,

I learned something this week and I hope it will save someone from spending the money I have spent to learn about it. It may be common knowledge which makes me an idiot - but no big surprise there.

I have been fighting a vibration at cruise speed. It has been VERY hard for me to determine where it is coming from. I have replaced all tires, had all tires balanced a second time (after installation), replaced steering and suspension parts, and even replaced the front wheels. It was at the shop that was installing the new wheels that I made serious progress. A smart fellow in the back of the shop heard me talking to the others about the vibration. He knew the problem and had the answer.

My bus has 'hub centered' wheels. These wheels fit over a flange/lip on the hub. This flange on the hub is supposed to center the wheel on the axle. Apparently, with enough miles, these flanges wear and the wheel is no longer centered. That was my problem.

The smart fellow pulled out a tool called "TRU-BALANCE." This is basically three alignment 'rods' that screw onto three studs. The wheel is then installed over these 'rods' which centers the wheel on the studs. Then all wheel nuts are installed/tightened and the three rods removed (and nuts installed on those studs).

Ridiculously simple but IT WORKED!! The vibration in the front end was gone. Now, I can clearly feel that there is some vibration coming from the back. I intend to return to the same shop and have them do the same thing on rear wheels.

Hope that helps someone, someday...

__________________
JD - Full timer out west
Missy - 1998 MCI 102-EL3 - 1.7kW Solar - 10kWh Lithium
My Adventures & Build
JDOnTheGo is offline   Reply With Quote
Old 10-11-2017, 07:54 AM   #2
Bus Crazy
 
Njsurf73's Avatar
 
Join Date: Jan 2017
Location: Massachusetts
Posts: 1,497
Year: 2002
Coachwork: Bluebird
Chassis: Bluebird
Engine: 5.9 Cummins 24v
Rated Cap: 72 pax
It was not common knowledge to me. Thanks for sharing that. You may have saved a few people the same struggle.

Sent from my XT1254 using Tapatalk
Njsurf73 is offline   Reply With Quote
Old 10-11-2017, 08:27 AM   #3
Bus Geek
 
Join Date: May 2014
Location: West Ohio
Posts: 3,775
Year: 1984
Coachwork: Bluebird
Chassis: International 1753
Engine: 6.9 International
Rated Cap: 65
I've heard of it. Have never seen it personally though. Do you have alloy wheels or are they steel?
Booyah45828 is offline   Reply With Quote
Old 10-11-2017, 08:29 AM   #4
Bus Crazy
 
JDOnTheGo's Avatar
 
Join Date: Feb 2017
Location: The West
Posts: 1,209
Year: 1998
Coachwork: MCI
Chassis: 102 EL3
Engine: DD 60
Quote:
Originally Posted by Booyah45828 View Post
I've heard of it. Have never seen it personally though. Do you have alloy wheels or are they steel?
All eight were steel. Now the two fronts are alloy.
__________________
JD - Full timer out west
Missy - 1998 MCI 102-EL3 - 1.7kW Solar - 10kWh Lithium
My Adventures & Build
JDOnTheGo is offline   Reply With Quote
Old 10-11-2017, 09:13 AM   #5
Traveling
 
Join Date: Nov 2015
Location: Midwest
Posts: 2,573
Year: 2003
Coachwork: BlueBird
Chassis: TC2000
Engine: 5.9L Cummins
Rated Cap: '00
Quote:
Originally Posted by JDOnTheGo View Post
All eight were steel. Now the two fronts are alloy.
GREAT info.

Here is manufacturer link
Rusty is offline   Reply With Quote
Old 10-11-2017, 09:22 AM   #6
Bus Geek
 
Tango's Avatar
 
Join Date: Mar 2011
Location: Houston, Texas
Posts: 8,462
Year: 1946
Coachwork: Chevrolet/Wayne
Chassis: 1- 1/2 ton
Engine: Cummins 4BT
Rated Cap: 15
When reinstalling "hub-centric" wheels, be sure to apply a small amount of anti-sieze to the hub where they fit together with the rim. Steel, hub-centric rims can be a monster to work with when they rust weld onto the hub.

SIDE NOTE...

Never put anti-sieze on lug bolts.
Tango is offline   Reply With Quote
Old 10-11-2017, 11:16 AM   #7
Bus Geek
 
Join Date: Sep 2017
Location: Owasso, OK
Posts: 2,627
Year: 1999
Coachwork: Thomas
Chassis: Saf-T-Liner MVP ER
Engine: Cummins 6CTA8.3 Mechanical MD3060
Rated Cap: 46 Coach Seats, 40 foot
Quote:
Originally Posted by Tango View Post

SIDE NOTE...

Never put anti-sieze on lug bolts.
Good advice, but remember that threads should be clean and dry.

If you do use anti-sieze, torque values increase by 30% in all instances except where anti-sieze is specified .... or threadlock, for that matter.

It's useful to add anti-seize to steel sparkplugs in aluminum heads, but again the torque value goes up.
__________________
Steve Bracken

Build Thread
Twigg is offline   Reply With Quote
Old 10-11-2017, 11:28 AM   #8
Bus Geek
 
Join Date: May 2009
Location: Columbus Ohio
Posts: 19,007
Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
super cool news!!!
I had seen this once before a few years back when I rented a freightliner budget miving van.. I had a horrid shake.. and called truck rental, they sent me to a freightliner garage where the tech jacked up the front wheels and spun both.. the left front was way off center.. part of the hub flange was actually bent.. he took a few tapered lug nuts.. and center the wheel by loosening all 10 lugs, then putting those tapered ones and tightened just enough to pull the wheel true.. then ran in the rest of the nuts (regular with his gun.. removed the tpered, put on the regular ran them in.. and good to go.. (im sure he was suppose to torque them wit ha wrench but he used his gun.. I took off down the road and it was pretty smooth!
-Christopher
cadillackid is offline   Reply With Quote
Old 10-12-2017, 06:51 AM   #9
Bus Geek
 
Join Date: Sep 2017
Location: Owasso, OK
Posts: 2,627
Year: 1999
Coachwork: Thomas
Chassis: Saf-T-Liner MVP ER
Engine: Cummins 6CTA8.3 Mechanical MD3060
Rated Cap: 46 Coach Seats, 40 foot
Quote:
Originally Posted by cadillackid View Post
super cool news!!!
I had seen this once before a few years back when I rented a freightliner budget miving van.. I had a horrid shake.. and called truck rental, they sent me to a freightliner garage where the tech jacked up the front wheels and spun both.. the left front was way off center.. part of the hub flange was actually bent.. he took a few tapered lug nuts.. and center the wheel by loosening all 10 lugs, then putting those tapered ones and tightened just enough to pull the wheel true.. then ran in the rest of the nuts (regular with his gun.. removed the tpered, put on the regular ran them in.. and good to go.. (im sure he was suppose to torque them wit ha wrench but he used his gun.. I took off down the road and it was pretty smooth!
-Christopher
The air-wrenches in tire shops are preset for the correct torque.

Whether they are set correctly is another story
__________________
Steve Bracken

Build Thread
Twigg is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 01:14 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.