United States 03V306000
PACCAR Incorporated
The problem
ON CERTAIN TRUCKS EQUIPPED WITH CATERPILLAR C7 OR 3126E 2002 ENGINES AND HORTON FAN HUBS, THE FAN HUB MOUNTING BOLTS CAN FAIL RESULTING IN THE HUB AND FAN ASSEMBLY SEPARATING FROM THE ENGINE. THIS LOSS OF CLAMP LOAD CAUSES UNWANTED VIBRATION IN THE ASSEMBLY THAT LEADS TO BOLT FAILURE.
Risk
IF THE BOLTS FAIL, THE COMPLETE HUB AND FAN ASSEMBLY COULD SEPARATE FROM THE ENGINE RESULTING IN EQUIPMENT DAMAGE AND/OR PERSONAL INJURY.
What owners should do
DEALERS WILL ADD A RIGID SPACER ACROSS THE TWO LOWER MOUNTING HOLES OF THE FAN HUB TO MAINTAIN THE CLAMPING FORCE AND REPLACE ALL THE BOLTS AND WASHERS. OWNER NOTIFICATION BEGAN OCTOBER 22, 2003. OWNERS SHOULD CONTACT PETERBILT AT 1-940-591-4201.
Units 1858