Recently ran into that with our Frieghtliner chassis. There are two shops in town owned by the same outfit. One shop will not work on our chassis but they will send you to the other where they will work on it.
IH theoretically should work on all of the front issues but may have some reluctance to work underneath on the chassis.
I would send an email to IH to find out what their policy is.
Gordon and Janet
Tour 42QD/inTech Stacker