United States 88V161000
Mack Trucks, Inc.
The problem
CERTAIN ENGINE SUPPORT CASTINGS WERE PRODUCED WITH FAULTY METALLURGY AND COULD FAIL.
Risk
FAILURE OF ONE OR BOTH BRACKETS COULD CAUSE DISLOCATIONOF ENGINE AND TRANSMISSION ASSEMBLY, WHICH COULD RESULT IN TRUCK DISABLEMENT,POSSIBLE LOSS OF ACCELERATOR CONTROL AND AN ACCIDENT.
What owners should do
REPLACE REAR ENGINE SUPPORTS AS NECESSARY.
Units 408