The axles may have insufficient lubrication, which may result in damage to the wheel end bearings.
If the bearings are damaged, the wheel may separate and cause a sudden loss of vehicle control, increasing the risk of crash.
What to do
Navistar will notify owners, and dealers will inspect the steer axle wheel hubs for proper fluid level and repair any damaged wheel end components and spindles -- as necessary -- free of charge.
The recall is expected to begin May 1, 2020.
Owners may contact Navistar customer service at (800) 448-7825. Navistar's number for this recall is 20503.