09-19-2024, 04:49 AM
As I said before… I had a tug of war happening in the back of the bus. The Drive axle and Tag axle were fighting each other.
Before
After
Bill and Paul knew exactly what’s needed to set up all three axles.
They disconnected the “Hydraulics” to properly set up the “Mechanicals”. When they had the mechanics of the suspension set up to roll down the road, they connected the ZF RAS system again.
Bill and Paul could have made additional adjustments in Caster and Camber however they were limited by the steer control arm mounting stud length. They estimated if studs were 1.25” longer, they could have continued to shim the A Arms to achieve the values they wanted to make the bus drive optimal.
Unfortunately it doesn’t appear we can replace the steer axle studs.
My next drive will be from Springfield Missouri back home to Bentonville Arkansas. I’ll continue to update the blog and will likely add a summary of my journey.
The last modification I’ll make to my ZF RAS will be in an attempt to bleed the hydraulic system more effectively. I have a plan but right now I don’t have the time to execute.
JK
Before
After
Bill and Paul knew exactly what’s needed to set up all three axles.
They disconnected the “Hydraulics” to properly set up the “Mechanicals”. When they had the mechanics of the suspension set up to roll down the road, they connected the ZF RAS system again.
Bill and Paul could have made additional adjustments in Caster and Camber however they were limited by the steer control arm mounting stud length. They estimated if studs were 1.25” longer, they could have continued to shim the A Arms to achieve the values they wanted to make the bus drive optimal.
Unfortunately it doesn’t appear we can replace the steer axle studs.
My next drive will be from Springfield Missouri back home to Bentonville Arkansas. I’ll continue to update the blog and will likely add a summary of my journey.
The last modification I’ll make to my ZF RAS will be in an attempt to bleed the hydraulic system more effectively. I have a plan but right now I don’t have the time to execute.
JK
Kristi & Jeff King
Bentonville, Arkansas
#744 2005 45’ Newell Coach
ZF Suspension/Active Steering Tag Axle
CAT-13 ACERT KCB Engine 525HP 1642 ftlbs Torque Cat Compound Turbocharger 43.5 psi
Allison HD4000MH Transmission with PTO drive.