03-02-2025, 06:28 PM
I believe I’ve discovered the smoking gun.
Today I was finishing up the new sway bar arm by powder coating it before I installed it.
In preparation to install the arm, I put the bus in travel height, pinned the HCV in the neutral position and disconnected the control rod.
I had to go to work for a while today so I was away from the bus from 2pm until about 6:45 pm.
When I went out to check on the bus, the steer air bags were at maximum inflation! It looked higher than I’ve ever seen it but it might be because I didn’t expect it to be that high.
My assumption is the HCV is faulty and is passing air to the bags in the neutral position. I can only assume that this is my true problem with the steer axle travel height increasing as I drive and causing the alignment to drive poorly.
I’m sure the mods I’m making will improve my situation but it is nice to know that I’ve found a smoking gun…
Moral of the story… don’t let a tech weld your HCV arm to the valve shaft….
It’s always something….
Today I was finishing up the new sway bar arm by powder coating it before I installed it.
In preparation to install the arm, I put the bus in travel height, pinned the HCV in the neutral position and disconnected the control rod.
I had to go to work for a while today so I was away from the bus from 2pm until about 6:45 pm.
When I went out to check on the bus, the steer air bags were at maximum inflation! It looked higher than I’ve ever seen it but it might be because I didn’t expect it to be that high.
My assumption is the HCV is faulty and is passing air to the bags in the neutral position. I can only assume that this is my true problem with the steer axle travel height increasing as I drive and causing the alignment to drive poorly.
I’m sure the mods I’m making will improve my situation but it is nice to know that I’ve found a smoking gun…
Moral of the story… don’t let a tech weld your HCV arm to the valve shaft….
It’s always something….
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.