Two technical service bulletins have been issued for National vehicles. The components associated with the service bulletins were driveline center support bearing and power train.
| Bulletin Date: | Jun. 25, 2020 |
| Component: | Driveline center support bearing. |
| Bulletin Summary: | Product notice alerting customers to ball bearings that were misboxed |
| National models covered in this TSB: |
National National.
|
| Bulletin Date: | Jun. 11, 2020 |
| Component: | Power train. |
| Bulletin Summary: | Product notice alerting customers that certain bearing cones cannot be installed on vehicles |
| National models covered in this TSB: |
National National,
National O-ring O-ring,
National Rv National Rv.
|