Freightliner Truck: Engine

Affects Freightliner Truck · 1987–1992 — about 99 vehicles.

The hazard

Vehicles equipped with Caterpillar 3406B or 3306B engines may experience a loss of the governor servo pin. This would result in the engine and vehicle continuing at their same respective speeds until a change in load occurs (i.e. terrain, brakes or clutch) and could reduce engine braking with a subsequent increase in stopping distances and the risk of a crash. Correction: The rack servo cylinder assembly will be replaced on affected engines.

What to do

Contact your dealer; the remedy details were not included in the filing.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational