Meritor publishes Technical Bulletin on Wheel End Inspection Meritor has published a technical bulletin on the procedures and intervals to inspect wheel ends and tighten spindle nuts on Meritor TL series trailer axles with unitized hubs. Cottrell customers can find this bulletin posted under the “Operator’s Manual” section of our website as well as attached below to this news posting. If you have any questions about this bulletin, feel free to contact your Cottrell representative.