Hino Dutro—Engine Vacuum Pump
What are the defects?
Due to excessive design diameter of the oil feed union bolt lubrication pressure to the vacuum pump is inadequate and possibly operates with insufficient lubrication. Continued operation may result in premature wear of the vacuum pump vanes reducing its ability to produce negative pressure (vacuum).
What are the hazards?
What should consumers do?
All owners of affected vehicles will be contacted individually by letter.