MACK R685ST 1974: SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE
NHTSA Campaign ID Number: 75V050000
| Make | Model | Year |
|---|---|---|
| MACK | R685ST | 1974 |
| Date Received by ODI | Date Added to Database | |
| 1975-03-28 | 1979-10-12 |
Manufacturers Involved: Mack Trucks, Inc.
Component: SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE
Potential Number Of Units Affected: 38
Report Initiator: MFR MFR Report
Regulation Part Number: 571
Federal Motor Vehicle Safety Standard Number: 121
MACK CAMPAIGN NO N/A.TRUCK/ANTI WHEEL LOCK BRAKE CONTROL.OCT 1974 THRU NOV.26, 1974.POSSIBILITY OF THE ANTI-LOCK SYSTEM FAILURE.THE COMPUTER MODULECONTAINS A NUMBER OF PIN CONNECTIONS WHICH MAY BE DEFECTIVE AND COULD CAUSE ALOSS OF WHEEL ANTI-LOCK CONTROL WITHOUT WARNING TO THE DRIVER.SUCH A FAILUREOF THE SYSTEM WOULD NOT CAUSE THE "ANTI-LOCK INOPERATIVE" WARNING LIGHT TOFUNCTION.'CORRECT BY INSPECTING AND REPLACING COMPUTER MODULE WITH IMPROVEDDESIGN WHERE NECESSARY'.
