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Old 04-11-2018, 01:13 AM   #1
Mini-Skoolie
 
Join Date: Feb 2018
Location: WA
Posts: 27
Year: 2004
Coachwork: Thomas
Chassis: Saf-T-Liner MVP EF
Engine: Cat 3126b
Rated Cap: 71
Front end shakes over 45mph

I bought a bus....well a few busses...but the one I planned on keeping and converting has issues, at about 45 mph she starts shaking, Part of me says sell her for cheap and keep a different bus but the other part says to figure it out and get her fixed.

Im not a gear head by any means but dont mind getting a little dirty, my plan is to get the front end up on stands and start shaking the wheels looking for slop, any other ideas?


Bus is a 2004 Thomas front engine.
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Old 04-11-2018, 04:47 AM   #2
Skoolie
 
Join Date: Dec 2017
Location: southern maine
Posts: 114
Year: 2010
Coachwork: Coach & Equipment MFG
Chassis: ford E350 superduty
Engine: 5.4 liter v8
Rated Cap: 7 passenger
if you don't find anything loose on the front end,.. i would take the tires off and have them balanced, checked for roundness, inspected for dirt/mud in the wheel,.. sometimes when a bus is going to be sold they swap good tires out and put problem tires on to get rid of them (as was the case with the bus I bought)
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Old 04-11-2018, 07:21 AM   #3
Bus Geek
 
Join Date: May 2009
Location: Columbus Ohio
Posts: 11,630
Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
Bad king-pins will give you a pretty good shimmy, esp if it changes momentarily when you hit bumps or potholes..

Jack it up on HEAVY STANDS or cribbing (busses are too heavy for most auto-parts store jack stands). enough that you can get a bar or pipe in the handholes of the wheel, then shake things around. if the whole knuckle moves up and down in reference to the mount, the king pins are usually the culprit. spinning the tires slowly and watching will show you out-of-roundness.

-Christopher
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Old 04-11-2018, 09:05 AM   #4
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
Harbor Freight have a good set of six ton stands.

They are good enough for a 13000 lb axle, especially one that is not loaded to the max.

My steer axle currently has 6300 lbs weight on it, or about 3 ton.
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Old 04-11-2018, 09:24 AM   #5
Mini-Skoolie
 
Join Date: Feb 2018
Location: WA
Posts: 27
Year: 2004
Coachwork: Thomas
Chassis: Saf-T-Liner MVP EF
Engine: Cat 3126b
Rated Cap: 71
Thanks guys, ill try that, yes I figured out quick that I didnt have the tools to lift a bus wheel off the ground.

Quick trip to HF got me a pair of 6T stands and a 12T bottle jack with air lift, man what an arm saver that air is.
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