Date: 2003-08-11
Honda (American Honda Motor Co.)
NHTSA Action Number: PE03039
Components: STRUCTURE:FRAME AND MEMBERS
Subject: REAR SUSPENSION COLLAPSE
Opened From: 2003-08-11 - 2003-10-10
NHTSA Recall Number: 03V350
Summary
THE SUBJECT MOTORCYCLES, INTRODUCED WITH THE 2001 MODEL YEAR, UTILIZE AN ALUMINUM FRAME INDIVIDUALLY WELDED BY HONDA EMPLOYEES IN THE COMPANY?S MARYSVILLE, OHIO ASSEMBLY PLANT.NHTSA/ODI OPENED THIS INVESTIGATION AFTER LEARNING THAT SOME 2002 MODEL YEAR GL1800?S WERE EXPERIENCING REAR SUSPENSION COLLAPSE WHEN THE LOWEST CROSSMEMBER WOULD COMPLETELY SEPARATE FROM THE FRAME.IT APPEARED THE CROSSMEMBER WAS SEPARATING DUE TO SUB-STANDARD WELDING OF THE CROSSMEMBER TO THE FRAME. ON SEPTEMBER 4, 2003 HONDA BRIEFED ODI STAFF AND ADVISED THAT THE SUBJECT WELD FAILURES RESULTED FROM A COMBINATION OF PRODUCTION LINE CHANGES THAT TOOK EFFECT ON MARCH 1, 2002.THESE CHANGES WERE:1) FEW, IF ANY, REINFORCING TIG WELDS APPLIED TO THE CROSSMEMBER MIG WELDS; 2) A RELATIVELY INEXPERIENCED WELDER BEGAN WELDING FRAMES AS OF THAT DATE; AND 3) A LESS ROBUST WELD QUALITY CONTROL INSPECTION WAS INTRODUCED.EFFECTIVE SEPTEMBER 11, 2002 HONDA ADDRESSED THESE ASSEMBLY LINE ISSUES.ON SEPTEMBER 16, 2003 HONDA ADVISED NHTSA/ODI THAT IT WAS CONDUCTING A SAFETY RECALL OF ALL MYR 2002/2003 GL1800?S BUILT FROM MARCH 1, 2002 THROUGH SEPTEMBER 10, 2002.THIS IS A WORLDWIDERECALL INVOLVING 9,521 MOTORCYCLES, OF WHICH 8,196 ARE IN THE UNITED STATES.FOR MORE INFORMATION CONCERNING BOTH HONDA?S SEPTEMBER 4TH BRIEFING AND THE RECALL, PLEASE REFER TO NHTSA?S OCTOBER 2, 2003 MEMO.BASED ON INFORMATION PROVIDED BY HONDA CONCERNING THE PRODUCTION LINE CHANGES; THE FIELD PERFORMANCE OF ALL 2001-2003 GL1800?S; AND NHTSA?S INDEPENDENT INFORMATION GATHERING ACTIVITIES; THE SCOPE OF HONDA?S RECALL APPEARS JUSTIFIED.ODI WILL CLOSELY MONITOR SUBJECT CROSSMEMBER WELD INTEGRITY FOR BIKES BUILT OUTSIDE THE RECALL SCOPE, AS WELL AS THE EFFECTIVENESS OF HONDA?S RECALL REMEDY FOR THOSE BIKES WITHIN IT, AND WILL TAKE ADDITIONAL ACTION IF WARRANTED BY FUTURE DEVELOPMENTS.
Investigation Documents
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