DORSEY DFVPD 1994: SERVICE BRAKES, AIR:SUPPLY:HOSES, LINES/PIPING, AND FITTINGS

General Information

NHTSA Campaign ID Number: 93V151000

Make Model Year
DORSEY DFVPD 1994
Date Owners Notified Date Received by ODI Date Added to Database
1993-09-09 1993-09-15 1993-09-21

Production Dates: 1993-03-01 - 1993-08-01

Manufacturers Involved: DORSEY CORPORATION

Component: SERVICE BRAKES, AIR:SUPPLY:HOSES, LINES/PIPING, AND FITTINGS

Potential Number Of Units Affected: 979

Report Initiator: MFR MFR Report

Summary

IMPROPER ROUTING OF THE AIR BRAKE HOSES FROM THE BRAKE VALVES TO THE BRAKE CHAMBERS OF THE AIR OPERATED S-CAM BRAKES CAN CAUSE THE HOSES TO CHAFE OR BE CUT ON THE TRAILER FRAME.

Consequence

SERVICE BRAKE HOSE CHAFING OR CUTTING CAN CAUSE REDUCTIONOR LOSS OF SERVICE BRAKES WITHOUT PRIOR WARNING TO THE DRIVER. A VEHICLE CRASHCAN OCCUR AS A RESULT OF THE MALFUNCTIONING SERVICE BRAKES. ALSO, IF A SPRINGBRAKE HOSE IS CUT, THE SPRING BRAKE DRAG OCCURS, WHICH REDUCES THE EFFECTIVENESSOF THE SERVICE BRAKES, AND CAUSES BRAKE COMPONENTS TO OVERHEAT TO THE POINT OFIGNITING THE UNDERCOATING AND BURNING THE TRAILER. THIS CAN ALSO CAUSE WHEELLOCKUP WHICH COULD RESULT IN A VEHICLE CRASH.

Remedy

CHAFFED BRAKE HOSES WILL BE REPLACED, AND THE BRAKE HOSE ROUTING AND BRAKE CHAMBER INSTALLATION WILL BE MODIFIED TO ELIMINATE THE BRAKE HOSE CHAFFING PROBLEM.

Notes

SYSTEM: BRAKES; AIR BRAKES; NON-METALLIC HOSES.VEHICLE DESCRIPTION: 28 FOOT LONG VAN TRAILER BUILT ON A SINGLE AXLE DROP FRAMEUNDERCARRIAGE.NOTE: IF YOU TRAILER IS PRESENTED TO AN AUTHORIZED DEALER ON AN AGREED UPONSERVICE DATE AND THE REMEDY IS NOT PROVIDED WITHIN A REASONABLE TIME AND FREEOF CHARGE OR THE REMEDY DOES NOT CORRECT THE DEFECT, PLEASE CONTACT DORSEYTRAILERS AT 1-205-897-5711 OR 1-404-438-9595. ALSO, CONTACT THE NATIONALHIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-800-424-9393.