VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS BUILT WITH REAR LEAF SPRING SUSPENSIONS (MODELS 4700 BUILT WITH REAR LEAF SUSPENSIONS AND MANUFACTURED FROM DECEMBER 9, THROUGH DECEMBER 16, 1998; MODELS 3400 AND 3800 BUILT WITH 14SBK REAR LEAF SPRING SUSPENSIONS AND BUILT APRIL 14 THROUGH MAY 10, 1999; AND MODELS 3400 AND 3800 BUILT WITH REAR LEAF SPRING SUSPENSIONS AND MANUFACTURED FROM MAY 10 THROUGH MAY 18, 1999). ON VEHICLES WHERE THE FRAME TO AXLE HOSE LENGTH WAS TOO LONG, A CHAFING CONDITION EXISTS ON SUSPENSION COMPONENTS, WHICH COULD RESULT IN HOSE RUPTURE. ON VEHICLES WHERE THE HOSES ARE TOO SHORT, A HOSE SEPARATION COULD OCCUR WITH SEVERE SUSPENSION ARTICULATION.
IF A HOSE RUPTURES, THE REAR BRAKES WILL FAIL INCREASING THE RISK OF A VEHICLE CRASH.
SHORT HOSES WILL BE REPLACED AND THE LONG HOSES WILL HAVE A HOSE ROUTING KIT INSTALLED TO PREVENT ANY CHAFING PROBLEMS.
INTERNATIONAL RECALL NO. 99508.OWNER NOTIFICATION BEGAN OCTOBER 11, 1999.OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT NAVISTAR AT 1-800-448-7825.ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-888-DASH-2-DOT (1-888-327-4236).