NHTSA campaign 21V226000
Hazard
Navistar, Inc. (Navistar) is recalling certain 2021 International LT and International RH vehicles. The spring inside the spring brake chamber may allow the pressure plate to shift and wear a hole through the diaphragm.
Consequence
A hole in the diaphragm may cause an air leak, causing the parking brake to engage and increasing the risk of a crash.
Remedy
Navistar will notify owners, and dealers will inspect and, as necessary, replace the spring brake chambers, free of charge. Owner notification letters were mailed on May 28, 2021. Owners may contact Navistar customer service at 1-800-448-7825. Navistar's number for this recall is 21502.
The text above is quoted verbatim from the NHTSA record. Confirm the affected units and the remedy with the manufacturer or NHTSA. Recall data may be incomplete, delayed, or superseded.