Vehicle Safety Recalls

Search 30,271 NHTSA recall campaigns covering every vehicle sold in the United States since 1966.

30,271 Recall Campaigns
24,323 Vehicle Models
233 Vehicle Makes
1966, 2026 Year Range

What is a vehicle safety recall?

A vehicle safety recall is issued when a manufacturer or the National Highway Traffic Safety Administration (NHTSA) determines that a defect in a motor vehicle creates an unreasonable risk to safety, or that the vehicle fails to meet a federal motor vehicle safety standard. Once a recall is issued, the manufacturer is required by federal law (49 U.S.C. ยง 30120) to repair, replace, or refund the vehicle without charge to the owner. The repair obligation lasts at least 15 years from the date the vehicle was first sold, regardless of mileage, ownership history, or warranty status.

The list below contains every recall campaign in NHTSA's official database, over 30,271 campaigns covering tens of millions of individual vehicles dating back to 1966. Each entry includes the official NHTSA campaign number (used to schedule the repair at any franchised dealer), the affected component, the defect description, the consequence of the failure, and the manufacturer's remedy. You can filter by make, model year, or keyword. To check whether a specific vehicle has an open recall, use the VIN lookup; to read every recall ever issued for a particular brand, use browse by make.

How to read a recall entry

Each recall card on this page surfaces the four pieces of information that matter most to vehicle owners:

  • Component. The system or part affected by the defect, brakes, airbags, fuel system, electrical, etc. NHTSA uses a standardized component taxonomy.
  • Summary. Plain-English description of the defect and what is expected to fail.
  • Consequence. The actual safety risk, fire, loss of brakes, airbag rupture, sudden stalling. This is the most important field for understanding severity.
  • Remedy. What the dealer will do to fix the vehicle. This tells you how long the repair will take and whether parts are likely to be available.

A small share of recalls, typically less than 3 percent, also carry severity flags such as "Park Outside" or "Do Not Drive." When a recall has one of these flags, NHTSA is recommending that owners take additional precautions until the repair is performed. Park Outside means the defect can ignite a fire even when the vehicle is parked; Do Not Drive means the failure mode is severe enough that NHTSA cannot recommend continuing to operate the vehicle. We have a deeper explainer at Understanding Recall Severity.

Where this data comes from

This page is built on NHTSA's recall flat-file database, which we re-import on the first day of every month. Each individual recall record is sourced directly from NHTSA's public files, we don't paraphrase, summarize, or alter the official descriptions. The summaries you see are the manufacturer's own filings as submitted to NHTSA, lightly reformatted for readability. For the most current status of any specific VIN, the authoritative source is nhtsa.gov/recalls; this page is most useful for browsing patterns across models and years rather than checking the status of one specific car.

Read more from our blog

How to Check If Your Car Has an Open Recall › What to Do If Your Car Is Recalled › Why Recall Repairs Are Always Free › Used Car: 7 Recall Checks to Run First › The Takata Airbag Recall: Full Story › All Articles ›
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Showing 432 recalls for MACK

02V168000 Jun 21, 2002
MACK DM600 (2002) - EXTERIOR LIGHTING:HEADLIGHTS
CERTAIN CLASS 8 CHASSIS FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT." FRONT DRIVE AXLES WERE INSTALLED BY THE MACUNGIE MODIFICATION CENTER. WITH THE INSTALLATION OF THE AXLE, THE OVERALL HEIGHT OF THE FRONT OF THE VEHICLE WAS RAISED.
40 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THIS CAN CAUSE THE NONCOMPLIANCE.
Remedy: A SET OF LAMPS WILL BE MOUNTED BELOW THE BUMPER, BRINGING THE LAMP HEIGHT INTO COMPLIANCE. THE EXISTING LAMPS IN THE HOOD WILL BE REMOVED AND DECORATIVE COVERS WILL BE INSTALLED TO COVER THE HOLES IN THE HOOD. OWNER NOTIFICATION BEGAN OCTOBER 4, 2002. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZ...
02V018005 Apr 26, 2002
MACK CV (2001) - SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE
ON CERTAIN TRUCKS EQUIPPED WITH MERITOR WABCO PNEUMATIC ANITLOCK BRAKE SYSTEM (ABS) VALVE PACKAGES, THE ASSEMBLY BOLTS ON THESE VALVE PACKAGES WERE NOT TIGHTENED CORRECTLY.
100 vehicles affected Manufacturer: MACK TRUCKS, INC.
Consequence: BOLTS TORQUED BELOW SPECIFICATION WILL NOT RELIABLY PREVENT AIR LEAKAGE AT THE AFFECTED ABS VALVE PACKAGE INTERFACE JOINTS ONCE THE COMPONENT BEGINS NORMAL VEHICLE OPERATION. IF AIR LEAKS DEVELOP AT ANY OF THE ABS VALVE PACKAGE INTERFACE JOINTS, BRAKE SYSTEM PRESSURE REDUCTIONS COULD OCCUR DURING B...
Remedy: DEALERS WILL TIGHTEN THE FASTENERS TO THE PROPER SPECIFICATION. OWNER NOTIFICATION BEGAN JUNE 13, 2002. 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 MACK AT 1610-709-3337..
02V061002 Mar 21, 2002
MACK CL (1998) - SUSPENSION:REAR
ON CERTAIN HEAVY DUTY TRUCKS EQUIPPED WITH DANA SPICER TANDEM DRIVE AXLE MODELS DS463, AN UNDERSIZED ATTACHMENT WELD MAY FRACTURE WITHOUT WARNING.
213 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THE LOSS OF THIS ATTACHMENT TO THE VEHICLE CHASSIS CAN ADVERSELY AFFECT VEHICLE HANDLING OR DRIVER CONTROL.
Remedy: THE DEALERS WILL REMOVE THE SUSPECT BRACKET, INSPECT THE AXLE HOUSING, AND REWELD THE BRACKET TO THE AXLE HOUSING. OWNER NOTIFICATION BEGAN APRIL 22, 2002. 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 T...
02V019000 Jan 18, 2002
MACK CH (2000) - STEERING:HYDRAULIC POWER ASSIST:HOSE, PIPING, AND CONNECTIONS
ON CERTAIN CLASS 8 HEAVY DUTY TRUCKS EQUIPPED WITH R. H. SHEPPARD M90 STEERING GEARS, AN INCORRECT HOSE WAS USED FOR THE HIGH-PRESSURE LINE BETWEEN THE POWER STEERING PUMP AND THE STEERING GEAR. THE HOSE IS RATED AT 2000 PSI, WHILE IT SHOULD BE RATED AT 3000 PSI.
869 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THIS HOSE COULD DEVELOP A LEAK OR BURST WHILE IN SERVICE. SHOULD THE LINE BURST, STEERING CONTROL WOULD STILL BE MAINTAINED, BUT A LOSS OF POWER ASSIST WILL BE EXPERIENCED.
Remedy: DEALERS WILL REPLACE THE STEERING HOSE. OWNER NOTIFICATION BEGAN MARCH 22, 2002. 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 MACK AT 1-610-709-3011.
01V389000 Dec 21, 2001
MACK CH (2001) - STEERING:HYDRAULIC POWER ASSIST:PUMP
VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH E-TECH ENGINES. A CONDITION EXISTS ON THE AUXILIARY DRIVE SHAFT OF THE E-TECH ENGINE THAT CAUSES THE LOSS OF POWER STEERING ON VEHICLES WHERE THE POWER STEERING PUMP IS MOUNTED OFF THE FRONT OF THE ENGINE.
7,500 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THIS COULD RESULT IN THE LOSS OF POWER STEERING.
Remedy: DEALERS WILL INSPECT THE VEHICLES AND REPLACE THE NUT THAT HOLDS THE GEAR TO THE AUXILIARY DRIVE SHAFT. OWNER NOTIFICATION BEGAN MARCH 22, 2002. 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...
01V301000 Sep 24, 2001
MACK CV (2000) - SUSPENSION:FRONT:SPRINGS:COIL SPRINGS
VEHICLE DESCRIPTION: CLASS A HEAVY DUTY TRUCKS WITH 18,000 LB. FRONT AXLES MAY HAVE FRONT SPRINGS INSTALLED THAT ARE RATED FOR THE 14,600 LB. FRONT AXLE.
483 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: FRONT SPRING FAILURE COULD RESULT IN LOSS OF VEHICLE CONTROL.
Remedy: DEALERS WILL REPLACE BOTH SPRINGS. OWNER NOTIFICATION BEGAN DECEMBER 26, 2001. 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 MACK AT 1-610-709-3011.
01V140005 Sep 24, 2001
MACK CH (2000) - STEERING:LINKAGES:TIE ROD ASSEMBLY
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH TRW TIE ROD ENDS ON CERTAIN DANA/SPICER AXLES (E12001) AND MACK AXLES THROUGH DANA HEAVY AXLE (FAWL 12). THE TIE ROD AND DRAG LINK BALL STUD ENDS CONTAIN BEARINGS THAT ARE BELOW THE SPECIFIED CASE DEPTH AND/OR HARDNESS.
8,794 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THIS CAN LEAD TO PREMATURE WEAR WITH POSSIBLE SEPARATION OF THE BALL STUD FROM THE SOCKET, INCREASING THE RISK OF LOSS OF CONTROL OF THE VEHICLE.
Remedy: DEALERS WILL REMOVE AND REPLACE ALL AFFECTED TIE RODS AND DRAG LINKS WITH DIFFERENT DESIGNED ENDS. TRUCKS THAT HAVE BEEN REPAIRED UNDER RECALL 00V246103/SC0262 WILL NOT BE RE-RECALLED. TRUCKS ONLY INSPECTED AND DETERMINED TO HAVE AN ACCEPTABLE DATE CODE UNDER SC0262 WILL BE RECALLED UNDER THIS CAM...
01V266001 Aug 23, 2001
MACK MACK (2001) - PARKING BRAKE:DRIVELINE
VEHICLE DESCRIPTION: CHASSIS BUILT WITH A JACOBS VEHICLE SYSTEMS ELECTRONIC CONTROLLER FOR THE ELECTRIC DRIVELINE BRAKE SYSTEM. A FAILURE MODE WITHIN THE SOLID STATE CONTROLLER CAN CAUSE A SHORT FROM THE POSITIVE TERMINAL TO THE NEGATIVE TERMINAL OF THE BATTERY.
4 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: UNDER THIS CONDITION, THE CONTROLLER COULD IGNITE CAUSUING A FIRE WITHOUT WARNING, POSSIBLE CAUSING INJURY TO THE VEHICLE OCCUPANT(S).
Remedy: CUSTOMERS ARE BEING NOTIFIED TO CONTACT JVS TO ARRANGE FOR A FREE REPAIR AT A LOCAL AUTHORIZED DEALER. OWNER NOTIFICATION BEGAN AUGUST 23, 2001. 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 SHOUL...
01V189004 Aug 1, 2001
MACK CH (2000) - SERVICE BRAKES, AIR:CONTROLS, PEDALS AND LINKAGES
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH CERTAIN MERITOR-WABCO BRAKE SYSTEM TWO AND FOUR PORT RELAY VALVES. THE VALVE MAY STICK OPEN WHEN A HIGH-PRESSURE APPLICATION IS RELEASED.
8,268 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: WHEN THE VALVE STICKS OPEN, IT CAN RESULT IN A TOTAL LOSS OF AIR FROM EITHER THE SERVICE OR THE PARK BRAKE SYSTEM. THE DRIVER MAY LOSE BRAKING ABILITY UNDER A SERVICE APPLICATION, POSSIBLY RESULTING IN A VEHICLE CRASH.
Remedy: DEALERS WILL REPLACE THESE VALVES. OWNER NOTIFICATION BEGAN NOVEMBER 16, 2001. 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 MACK AT 1-610-709-3011 OR MERITOR WABCO AT 800-535-5560.
01V044107 Mar 14, 2001
MACK CL (1999) - STEERING:LINKAGES:TIE ROD ASSEMBLY
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH TIE ROD ASSEMBLIES CONTAINING 24-DL MODEL BALL SOCKETS AND MANUFACTURED BY TRW. CERTAIN OF THE TIE ROD BALL-SOCKET BEARINGS HAVE A BELOW-SPECIFICATION CASE DEPTH AND/OR HARDNESS, WHICH CAN LEAD TO PREMATURE WEAR OF THE SOCKET.
1,484 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: IF THIS CONDITION OCCURS, THE DRIVER CAN LOSE PARTIAL CONTROL OF THE RIGHT FRONT WHEEL, POSSIBLY RESULTING IN A CRASH.
Remedy: DEALERS WILL REPLACE THE DEFECTIVE TIE RODS. OWNER NOTIFICATION BEGAN JULY 13, 2001. 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 MACK AT 1-610-709-3011 OR TRW CUSTOMER SERVICE AT 1...
01V044207 Mar 14, 2001
MACK CH (1999) - STEERING:LINKAGES:DRAG:LINK:CONNECTION
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH DRAG LINK ASSEMBLIES CONTAINING 24-DL MODEL BALL SOCKETS AND MANUFACTURED BY TRW. CERTAIN OF THE TIE ROD BALL-SOCKET BEARINGS HAVE A BELOW-SPECIFICATION CASE DEPTH AND/OR HARDNESS, WHICH CAN LEAD TO PREMATURE WEAR OF THE SOCKET.
4,247 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: IF THIS CONDITION OCCURS, THE DRIVER CAN LOSE PARTIAL CONTROL OF THE RIGHT FRONT WHEEL, POSSIBLY RESULTING IN A CRASH.
Remedy: DEALERS WILL REPLACE THE DEFECTIVE DRAG LINKS. OWNER/DISTRIBUTOR NOTIFICATION BEGAN AUGUST 30, 2001. 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 MACK AT 1-610-709-3011 OR TRW CUSTO...
01V063000 Feb 23, 2001
MACK CL713 (2000) - STEERING:HYDRAULIC POWER ASSIST:HOSE, PIPING, AND CONNECTIONS
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS. INCORRECT PRESSURE RATED POWER STEERING HOSES WERE INSTALLED.
56 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THE HOSE THAT CONNECTS THE POWER STEERING PUMP TO THE STEERING GEAR CAN BURST OR LEAK RESULTING IN THE LOSS OF POWER STEERING ASSIST.
Remedy: DEALERS WILL REPLACE THE POWER STEERING HOSE. OWNER NOTIFICATION BEGAN APRIL 26, 2001. 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 MACK AT 1-610-709-3011.
00V308000 Oct 6, 2000
MACK MS200 (1999) - STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS. THE STEERING GEAR FASTENERS WERE INCORRECTLY TIGHTENED AND CAN WORK LOOSE.
35 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THIS CONDITION COULD RESULT IN A LOSS OF STEERING CONTROL, INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL REMOVE, DEGREASE, AND RETORQUE STEERING GEAR MOUNTING BOLTS.
00V246103 Oct 4, 2000
MACK CH (1999) - STEERING:LINKAGES:TIE ROD ASSEMBLY
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH TRW TIE ROD ENDS ON CERTAIN MERITOR AXLES. THE TIE ROD AND DRAG LINK BALL STUD ENDS CONTAIN BEARINGS THAT ARE BELOW THE SPECIFIED CASE DEPTH AND/OR HARDNESS.
6,244 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THIS CAN LEAD TO PREMATURE WEAR WITH POSSIBLE SEPARATION OF THE BALL STUD FROM THE SOCKET, INCREASING THE RISK OF LOSS OF CONTROL OF THE VEHICLE.
Remedy: DEALERS WILL REMOVE AND REPLACE ALL AFFECTED TIE RODS AND DRAG LINKS WITH DIFFERENT DESIGNED ENDS.
00V230003 Oct 4, 2000
MACK CH (1999) - VEHICLE SPEED CONTROL:ACCELERATOR PEDAL
VEHICLE DESCRIPTION: CLASS 8 TRUCKS EQUIPPED WITH FELSTED ELECTRONIC ACCELERATOR PEDALS. THE RETURN SPRINGS CAN BREAK ON THE ACCELERATOR PEDALS THAT ARE EQUIPPED WITH STAINLESS STEEL OR ELECTROPLATED WIRE RETURN SPRINGS.
45,866 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THIS CONDITION COULD CAUSE THE PEDAL TO GO TO FULL THROTTLE IF BOTH RETURN SPRINGS BREAK, INCREASING THE RISK OF A CRASH.
Remedy: REPLACEMENT ACCELERATOR PEDALS EQUIPPED WITH RETURN SPRINGS MANUFACTURED OF MUSIC WIRE WITH ONE ADDITIONAL COIL ON EACH SPRING AND WITH AN ORGANIC COATING, ELIMINATING ELECTROPLATING WILL BE INSTALLED.
00V232009 Sep 13, 2000
MACK CH (1998) - SERVICE BRAKES, AIR:ANTILOCK
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS BUILT WITH BENDIX AIR ABS WITH AN EC-17 1030R ELECTRONIC CONTROL UNIT (ECU), THERE HAVE BEEN REPORTS OF UNWANTED ABS ACTIVATION AT LOW SPEEDS CAUSED BY 1) CHAFED ABS WHEEL SPEED SENSOR WIRES ON ROTATING PARTS OR 2) A DAMAGED COMPONENT AT THE WHEEL END THAT GENERATES A CERTAIN TYPE OF ERRATIC SENSOR SIGNAL.
651 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THIS CONDITION COULD CAUSE THE ABS ECU TO EXHAUST THE AIR AT THE AIR BRAKE MODULATORS FOR ONE OR MORE OF THE WHEELS. THIS COULD RESULT IN EXTENDED BRAKING DISTANCES AND A POSSIBLE CRASH.
Remedy: DEALERS WILL REPLACE THE ABS ECU.
00V019003 May 11, 2000
MACK CH (1988) - TRAILER HITCHES:FIFTH WHEEL ASSEMBLY
VEHICLE DESCRIPTION: HEAVY DUTY CLASS 8 TRUCKS EQUIPPED WITH FONTAINE FIFTH WHEEL ASSEMBLIES. THE FIFTH WHEEL MOUNTING PLATES CAN CRACK.
90 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: UNDER THE TRAILER LOADING, THE MOUNTING PLATE COULD EVENTUALLY FAIL DUE TO FATIGUE.
Remedy: DEALERS WILL INSPECT AND REPLACE THE MOUNTING PLATES THAT ARE CRACKED.
00V024000 Jan 31, 2000
MACK CX (1998) - EXTERIOR LIGHTING:HEADLIGHTS
VEHICLE DESCRIPTION: CERTAIN HEAVY DUTY TRUCKS FAIL TO COMPLY WITH REQUIREMENTS OF FMVSS NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT." THE HEADLAMP ASSEMBLIES HAVE THE BULB IDENTIFICATION FOR THE LOW AND HIGH BEAM REVERSED ON THE FRONT LENS.
709 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THE HEADLIGHT ASSEMBLIES DO NOT MEET THE REQUIREMENTS OF THE STANDARD.
Remedy: OWNERS WILL BE PROVIDED WITH A CORRECT LABEL, ALONG WITH INSTALLATION INSTRUCTIONS.
99V014001 Jan 22, 1999
MACK CL (1998) - SUSPENSION:FRONT:WHEEL BEARING
VEHICLE DESCRIPTION: CLASS 8 HEAVY DUTY TRUCK CHASSIS EQUIPPED WITH MACK 16,000 LB., 18,000 LB., OR 20,000 LB. HEAVY DUTY STEERING AXLES. THE INNER WHEEL BEARING CONE FOR THE STEERING AXLE WHEEL HUB ASSEMBLY DOES NOT PROPERLY FIT ONTO THE MACK STEERING AXLE SPINDLE ASSEMBLY. IMPROPER FIT OF THE BEARING TO THE SPINDLE INCREASES THE STRESS LEVELS TO THE STEERING AXLE SPINDLE WHICH COULD CAUSE SP...
8,025 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: IF THE SPINDLE FAILS, A LOSS OF DRIVER CONTROL COULD OCCUR, INCREASING THE RISK OF A VEHICLE CRASH.
Remedy: DEALERS WILL REMOVE THE LEFT AND RIGHT HUB/DRUM ASSEMBLIES FROM THE STEERING AXLES AND REPLACE THE INNER WHEEL BEARING CONES AND CUPS.
98V179000 Aug 3, 1998
MACK CONQUEST (1996) - ENGINE AND ENGINE COOLING:COOLING SYSTEM
VEHICLE DESCRIPTION: FRONT DISCHARGE, REAR ENGINE MIXERS. THE FAN DRIVE PULLEY THAT ATTACHES TO THE WATER PUMP CAN SHOW EXCESSIVE AXIAL RUNOUT CAUSING THE FAN AND PART OF THE FAN DRIVE TO SEPARATE FROM THE DRIVE PULLEY.
62 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THE FAN CAN CAUSE OTHER VEHICLE DAMAGE. IF THE HOOD IS OPEN AT THE TIME OF FAN FAILURE, FRAGMENTS PROPELLED COULD CAUSE POSSIBLE PERSONAL INJURY TO PERSONS SERVICING THE ENGINE OR STANDING NEARBY.
Remedy: DELERS WILL INSPECT THE WATER PUMP AND, IF NECESSARY, REPLACE THE PUMP.
97V196005 Dec 29, 1997
MACK CH (1996) - SUSPENSION:FRONT:HUB
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH DESIGN LEVEL 1, ROCKWELL FF980 SERIES FRONT AXLE. THE FRONT AXLE HUB FLANGE CAN DEVELOP CRACKS DUE TO HIGH STRESS LEVELS.
103 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: CRACKS IN A HUB FLANGE CAN RESULT IN A WHEEL SEPARATION.
Remedy: DEALERS WILL REMOVE AND REPLACE THE FRONT HUBS WITH AN IMPROVED DESIGN LEVEL 2 HUB.
97V191000 Nov 1, 1997
MACK CH (1997) - STEERING:LINKAGES:DRAG:LINK:CONNECTION
VEHICLE DESCRIPTION: CLASS 8 HEAVY DUTY TRUCKS. DURING ASSEMBLY, INSUFFICIENT TORQUE OCCURRED OF THE DRAG LINK TO THE AXLE STEERING ARM CONNECTION. IF THE DRAG LINK TO AXLE STTERING ARM CONNECTION IS NOT TORQUED AND THE COTTER PIN IS NOT INSTALLED, THE NUT COULD BACK OFF DURING VEHICLE OPERATION.
10,438 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: IF THE NUT BACKS OFF, THERE COULD BE A LOSS OF DRIVER CONTROL.
Remedy: DEALERS WILL RETORQUE THE DRAG LINK TO THE AXLE STEERING ARM CONNECTION.
97V181000 Oct 20, 1997
MACK FDM (1996) - STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
VEHICLE DESCRIPTION: FRONT DISCHARGE MIXER CHASSIS. THE ORIGINAL EQUIPMENT MITER BOXES HAVE NO PROTECTIVE BOOTS ON THE SHAFTS AND DIRT CAN ENTER THE SYSTEM CAUSING THE GEAR SHAFT BEARINGS TO DETERIORATE.
109 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THE BEARING DETERIORATION CAN CAUSE THE STEERING TO LOCK UP RESULTING IN LOSS OF STEERING CONTROL.
Remedy: DEALERS WILL REPLACE THESE MITER BOXES.
97E015000 May 29, 1997
MACK MACK (1997) - VEHICLE SPEED CONTROL
EQUIPMENT DESCRIPTION: ELECTRONIC CONTROL MODULES INSTALLED ON A MACK REFUSE TRUCK. THE ELECTRONIC CONTROL MODULE (ECM) IN THESE ENGINES CONTAIN A MANUFACTURING DEFECT WHICH RESULTS IN INTERMITTENT ELECTRICAL CONTACT AND CAUSES INCORRECT ELECTRONIC SIGNALS TO BE SENT TO THE ENGINE THROTTLE CONTROL.
1 vehicles affected Manufacturer: MESA
Consequence: THIS CONDITION CAN CREATE THE POTENTIAL FOR SUDDEN ACCELERATION OR DECELERATION OF THE ENGINE INCREASING THE RISK OF A CRASH.
Remedy: DUE TO THE POTENTIAL SERIOUS CONSEQUENCES, THE TRUCK THAT HAS THIS ECM INSTALLED HAS BEEN REMOVED FROM SERVICE.
96V255000 Dec 23, 1996
MACK CH (1996) - POWER TRAIN:DRIVELINE:UNIVERSAL JOINT
THE U-JOINT BEARING STRAP BOLTS WERE NOT PROPERLY TIGHTENED DURING ASSEMBLY.
1,590 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: INSUFFICIENT TORQUE CAN LEAD TO A BROKEN STRAP. IF THE STRAP BREAKS, THE DRIVESHAFT WOULD WOBBLE, POSSIBLY RESULTING IN SEPARATION. SUCH WOBBLING OR SEPARATION WOULD RESULT IN DAMAGE TO OTHER COMPONENTS OF THE VEHICLE AND ANY LOOSE FRAGMENT COULD FALL TO THE ROADWAY PRESENTING A HAZARD TO FOLLOWIN...
Remedy: DEALERS WILL INSTALL A NEW U-JOINT BEARING STRAP BOLTS.
95E017001 Jun 29, 1995
MACK DM (1993) - WHEELS
THESE WHEELS ARE COMPOSED OF 2 PIECES - A DISC AND A RIM WHICH ARE NORMALLY WELDED TOGETHER. THESE WHEELS LACK THE SPECIFIED FILLET WELDS.
62 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: IF WHEEL SEPARATION OCCURS WHILE THE VEHICLE IS INMOTION, BOTH STEERING AND BRAKING COULD BE AFFECTED RESULTING IN A VEHICLECRASH.
Remedy: DEALERS WILL INSPECT THE MANUFACTURING CODES STAMPED ON EACH WHEEL AND IF A WHEEL FALLS WITHIN THE SPECIFIED DATE CODE RANGE, THE DEALER WILL REPLACE THAT WHEEL.
95E003010 Jun 27, 1995
MACK CH (1992) - SERVICE BRAKES, AIR:SUPPLY:HOSES, LINES/PIPING, AND FITTINGS
AIR SYSTEM BLOCKAGE IN THE AIR DRYER OCCURS DEGRADING THE MOISTURE REMOVING CAPABILITIES OF THE DRYER WHEN THE VEHICLE IS OPERATED IN A COLD ENVIRONMENT AND MOISTURE ACCUMULATES AND FREEZES IN THE AIR DRYER OR IN THE LINE BETWEEN THE DRYER AND THE AIR SYSTEM RESERVOIR. THE AIR DRYER CAN BECOME OVERPRESSURIZED CAUSING THE AIR DRYER CARTRIDGE TO SEPARATE FROM THE MOUNTING BASE.
1,224 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: IF THE AIR DRYER SEPARATES FROM THE BASE, THE CARTRIDGE CAN SEPARATE SUFFICIENTLY ENOUGH TO CAUSE PERSONAL INJURY OR PROPERTY DAMAGE.
Remedy: DEALERS WILL EQUIP AIR SYSTEMS WITH A PRESSURE RELIEF VALVE TO BE LOCATED BETWEEN THE COMPRESSOR AND THE AIR DRYER. THIS PRESSURE RELIEF VALVE IS INTENDED TO VENT IF EXCESSIVE PRESSURE DEVELOPS IN THE AIR DRYER.
94V216000 Nov 1, 1994
MACK CH (1988) - POWER TRAIN:DRIVELINE:CENTER SUPPORT BEARING
THE DRIVESHAFT CENTER BEARING SUPPORT BRACKET CAN CRACK AND BREAK.
17,720 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: IF THIS HAPPENS, THE DRIVESHAFT WILL WOBBLE AND CAN SEPARATE. SEPARATION CAN RESULT IN DAMAGE TO OTHER COMPONENTS OF THE VEHICLE OR LOOSE FRAGMENTS CAN FALL ONTO THE ROADWAY PRESENTING A HAZARD TO OTHER DRIVERS.
Remedy: DEALERS WILL REPLACE THE CENTER BEARING HANGER BRACKET.
94V206000 Oct 21, 1994
MACK RB (1994) - STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
THE STEERING GEARBOX MOUNTING FASTENERS WERE NOT PROPERLY HEAT TREATED.
204 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THE FASTENER WASHERS CAN CRACK, ULTIMATELY RESULTING IN GEARBOX MOUNTING ASSEMBLY FAILURE AND LOSS OF STEERING CONTROL.
Remedy: DEALERS WILL REPLACE THE SUSPECT WASHERS WITH NEW, IMPROVED WASHERS.
94V192000 Oct 9, 1994
MACK MC (1990) - STEERING:LINKAGES
THE STEERING ARM CAN DEVELOP CRACKS CAUSING THE LEVER TO BREAK WITHOUT WARNING.
321 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THIS CAN RESULT IN LOSS OF STEERING CONTROL AND AN ACCIDENT.
Remedy: DEALERS WILL REPLACE THE STEERING LEVERS WITH AN IMPROVED STEERING LEVER WITH INCREASED FATIGUE STRENGTH.
94V136000 Jul 19, 1994
MACK RW (1991) - VEHICLE SPEED CONTROL
THE HAND THROTTLE CABLE PASSES THROUGH THE ACCELERATOR ROD ASSEMBLY AT AN ANGLE THAT WEARS A GROOVE IN THE ROD, WHICH IS LOCATED UNDER THE ACCELERATOR PEDAL. THE CABLE CAN BECOME WEDGED IN THE GROOVE WORN INTO THE ROD AND CAUSE THE ACCELERATOR TO STICK IN AN OPEN POSITION.
7,350 vehicles affected Manufacturer: BLUE BIRD BODY COMPANY
Consequence: THIS CAN RESULT IN LOSS OF CONTROL OF THE BUS, AND COULD RESULT IN AN ACCIDENT.
Remedy: DEALERS WILL INSTALL A POSITIONING BRACKET FOR ROUTING THE HAND THROTTLE CABLE THROUGH THE ACCELERATOR ROD ASSEMBLY.
94V032000 Feb 15, 1994
MACK CF (1987) - VEHICLE SPEED CONTROL
FUEL INJECTION SYSTEM RECONFIGURATION TO COMPLY WITH ENGINE EMISSION STANDARDS CAUSE HIGHER ENGINE VIBRATION LEVELS WHICH LEAD TO EARLY WEAR AND COMPLETE FAILURE OF THE SECONDARY THROTTLE RETURN MECHANISM.
39,777 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: IN THE EVENT THE PRIMARY THROTTLE RETURN FAILS, FAILURE OF THE SECONDARY THROTTLE RETURN SYSTEM WOULD NOT PROVIDE PROTECTION AGAINST LOSS OF THROTTLE CONTROL.
Remedy: A NEW PRODUCTION SECONDARY THROTTLE RETURN SYSTEM CONFIGURATION WILL BE INSTALLED.
93V176000 Nov 1, 1993
MACK FDM (1989) - POWER TRAIN:DRIVELINE
THE DRIVESHAFT TO THE FRONT DRIVING AXLE IS SECURED TO A BRACKET USING TWO PILLOW BLOCKS. THESE BLOCKS ARE OF INSUFFICIENT STRENGTH TO SUPPORT THE DRIVESHAFT AND COULD FAIL.
130 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: PILLOW BLOCK FAILURE ALLOWS THE DRIVELINE (JACKSHAFT)TO DROP DOWN ONTO THE ROADWAY AND CREATE A SAFETY HAZARD TO OTHER VEHICLES.
Remedy: MACK WILL INSTALL THICKER PILLOW BLOCKS AND SUPPORT U-BOLTS.
93V137000 Aug 20, 1993
MACK CH (1991) - ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
THE ENGINE COOLING FAN BLADES MAY BREAK DUE TO INADEQUATE BLADE STRENGTH AROUND THE RIVETS THAT ATTACH THE BLADES TO THE FAN SPIDER.
11,000 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: IF COMPLETE FRACTURE OF THE FAN BLADE OCCURS, IT COULDBE PROPELLED OUTSIDE THE FAN SHROUD, INJURING PERSON(S) IN THE VICINITY OFTHE TRUCK.
Remedy: AN IMPROVED FAN WILL BE INSTALLED ON THESE VEHICLES.
93V024000 Feb 16, 1993
MACK CH (1992) - TRAILER HITCHES
THE CARRIER YOKE BOLTS WERE MANUFACTURED WITH WORN ROLLING THREAD DIES, CAUSING STRESS CONCENTRATIONS WHICH CAUSED CRACKS DURING THE QUENCHING PROCESS.
4,924 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THIS CONDITION CAN CAUSE BOLT FAILURE AND ALLOW THEDRIVELINE TO SEPARATE FROM THE CARRIER ASSEMBLY.
Remedy: REPLACE THE CARRIER YOKE BOLTS.
92V114000 Aug 7, 1992
MACK CLASS 8 (1987) - STEERING:LINKAGES
THE CROSS STEERING LEVERS INTERCONNECTING THE LEFT AND RIGHT HAND STEERING KNUCKLES TO MAINTAIN ALIGNMENT WERE MANUFACTURED FROM INFERIOR MATERIALS AND FAIL IN LOW IMPACT SITUATIONS.
5,500 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: FAILURE OF THE CROSS STEERING LEVERS CAN RESULT IN LOSSOF STEERING CONTROL AND A VEHICLE ACCIDENT.
Remedy: REPLACE THE CROSS STEERING LEVERS.
91V196000 Oct 21, 1991
MACK MR (1989) - POWER TRAIN:MANUAL TRANSMISSION:SHIFT PATTERN INDICATOR
THE STONE BENNETT SHIFTERS DO NOT INDICATE THE RELATIVE POSITION OF THE SHIFT LEVER TO THE DRIVER.
308 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THE SHIFT LEVER DOES NOT MEET THE REQUIREMENTS OF FMVSS102.
Remedy: INSTALL A DECAL DISPLAYING THE RELATIVE SHIFT POSITIONS.
91V112000 Jun 25, 1991
MACK CH (1988) - SEAT BELTS:FRONT:ANCHORAGE
LAP AND SHOULDER SEAT BELT ARRANGEMENT FOR FIXED (NON-SUSPENSION) SEATS DOES NOT MEET THE SEAT BELT LOADING REQUIREMENTS OF FMVSS 210. THE INBOARD CLINCH NUT IN CAB SILL, WHERE THE BUCKLE FOR THE SHOULDER AND LAP BELT IS MOUNTED, PULLED OUT OF THE SILL DURING THE TESTS. CONSEQUENCE OF DEFECT: IF SEAT BELT ANCHIRAGE FAILS, THE SEAT OCCUPANT FACES AN INCREASED RISK OF INJURY IN AN ACCIDENT OR SUD...
4,000 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Remedy: RELOCATE THE INBOARD SEAT BELT MOUNTING FROM TOP OF THE SILL TO THE FORWARD FLANGE OF THE SILL ON THE CAB FLOOR, AND ADD A 3MM FILLET WELD AROUND THE 2 INBOARD CLINCH NUTS.
91V080000 May 23, 1991
MACK CF (1988) - STEERING:HYDRAULIC POWER ASSIST SYSTEM
INCORRECT MANUFACTURE OF THE HYDROBOOST CYLINDER ALLOWS THE BALL SOCKET CLAMP TO CONTACT RIGHT SIDE STEERING LEVER ON AN EXTREME LEFT TURN AND CAUSE FLEXING OF THE CYLINDER ROD .
35 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THIS FLEXING CAN CAUSE SEAL FAILURE OR CYLINDER FAILUREOF THE HYDROBOOST UNIT AND RESULT IN LOSS OF STEERING CONTROL AND RESULT IN AVEHICLE ACCIDENT.
Remedy: REPLACE INCORRECTLY BUILT BOOST CYLINDERS.
91V070000 May 1, 1991
MACK CF (1967) - STEERING:LINKAGES
STRESSES IMPOSED ON THE LEVER DURING TURNING MANEUVERS AND/OR IMPACT INCIDENTS, SUCH AS WOULD BE CAUSED BY CURBS OR ROAD SURFACE IRREGULARITY, REDUCE THE LIFE EXPECTANCY OF THE PART. THE STEERING LEVER MAY CRACK AND EVENTUALLY THE STRESSES COULD CAUSE THE STEERING LEVER TO BREAK.
3,673 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: A BROKEN STEERING LEVER WILL CAUSE LOSS OF STEERINGCONTROL WITHOUT PRIOR WARNING WHICH MAY RESULT IN A VEHICLE CRASH.
Remedy: REPLACE THE DEFECTIVE STEERING ARMS.
90V140000 Aug 1, 1990
MACK MS200 (1988) - STEERING:RACK AND PINION
CAPSCREW THAT ATTACHES STEERING GEAR TO THE STEERING BRACKET MAY LOOSEN AND CAUSE THE GEAR TO SEPARATE FROM ITS SUPPORTING BRACKET.
1,770 vehicles affected Manufacturer: RVI INC.
Consequence: THIS COULD AFFECT STEERING CONTROL AND RESULT IN ANACCIDENT.
Remedy: REPLACE THE STEERING BRACKET AND CAPSCREWS.
90V139000 Aug 1, 1990
MACK MS250 (1989) - STEERING:RACK AND PINION
CAPSCREW THAT ATTACHES STEERING GEAR TO THE STEERING BRACKET MAY LOOSEN AND CAUSE THE GEAR TO SEPARATE FROM ITS SUPPORTING BRACKET.
2,135 vehicles affected Manufacturer: RVI INC.
Consequence: THIS COULD AFFECT STEERING CONTROL AND RESULT IN ANACCIDENT.
Remedy: PROPERLY TORQUE CAPSCREWS.
90V120000 Jun 15, 1990
MACK CF (1985) - STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
WELDING DEFICIENCIES CAN CAUSE TWO-PIECE STEERING GEAR MOUNTING BRACKET TO PROGRESSIVELY SEPARATE.
300 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THIS COULD RESULT IN LOSS OF STEERING CONTROL, WITHOUTPRIOR WARNING, AND A VEHICLE CRASH.
Remedy: REPLACE STEERING GEAR MOUNTING BRACKETS WITH PROPERLY WELDED BRACKETS.
90V116000 Jun 12, 1990
MACK MIDLINER (1986) - SEAT BELTS:FRONT
THE CONNECTOR HALF OF THE SAFETY BELT IS NOT LONG ENOUGH TO ACCOMMODATE A 95TH PERCENTILE ADULT MALE.
5,200 vehicles affected Manufacturer: RV IND., INC.
Consequence: NONUSE OF THE SAFETY BELT WOULD INCREASE THE RISK ANDSEVERITY OF INJURY IN A SUDDEN STOP OR ACCIDENT; ALSO, TRUCKS WOULD NOT COMPLYWITH FMVSS 209.
Remedy: REPLACE SHORT SAFETY BELT CONNECTOR WITH CONNECTORS LONG ENOUGH TO COMPLY WITH STANDARD.
90V051000 Mar 16, 1990
MACK DM (1989) - VISIBILITY:WINDSHIELD WIPER/WASHER:LINKAGES
A TOLERANCE MISMATCH IN THE CRANK ASSEMBLY OF THE BOSCH WINDSHIELD WIPER MOTOR COULD CAUSE INSTANTANEOUS SEPARATION OF THE CRANK FROM THE LINKAGE ASSEMBLY IN THE LEFT HAND CONTROL ARM ASSEMBLY; THIS WOULD MAKE THE SYSTEM INOPERABLE.
2,350 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: WIPER FAILURE DURING VEHICLE OPERATION COULD REDUCE DRIVER'S ABILITY TO SEE THE ROAD, AND CREATES A POTENTIAL FOR AN ACCIDENT.
Remedy: REPLACE LEFT HAND CONTROL ARM LINKAGE ASSEMBLY.
90V052000 Mar 16, 1990
MACK R (1989) - STEERING:GEAR BOX:SHAFT SECTOR
INTERFERENCE BETWEEN STEERING GEAR SECTOR SHAFT AND THE FRAME RAIL THROUGH HOLE CAN CAUSE SECTOR SHAFT WEAR AND CAN WEAKEN SHAFT CAUSE IT TO BREAK.
267 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: SHAFT FAILURE DURING VEHICLE OPERATION WOULD CAUSE LOSS OF STEERING CONTROL AND A CRASH WITHOUT PRIOR WARNING.
Remedy: ENLARGE FRAME RAIL THROUGH HOLE TO PREVENT INTERFERENCE: REPLACE STEERING GEAR SECTOR SHAFT IF SCORED.
90V048000 Mar 12, 1990
MACK CH (1988) - STEERING:LINKAGES
THE UPPER AND LOWER PINCH BOLT ON THE STEERING PITMAN ARM AND THE LOWER PINCH BOLT CONNECTION ON SHEPHARD POWER GEARS WERE NOT TORQUED CORRECTLY.
6,696 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: PINCH BOLT COULD LOOSEN AND BREAK; THIS COULD CAUSE LOSS OF TRUCK STEERING CONTROL AND RESULT IN A CRASH.
Remedy: INSTALL ENGLISH HEX HEAD BOLTS AND FLAT WASHERS; TORQUE PINCH BOLTS TO SPECIFICATIONS.
90V034000 Feb 23, 1990
MACK DMM (1980) - STEERING:LINKAGES
CRACK MAY DEVELOP ON STEERING ARM THAT COULD PROGRESS AND REDUCE THE FATIGUE LIFE OF THE STEERING ARM.
1,862 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: STEERING ARM COULD FAIL WITHOUT WARNING RESULTING IN LOSS OF STEERING CONTROL AND POSSIBLY A CRASH.
Remedy: INSTALL A REDESIGNED STEERING ARM.
90V010000 Jan 23, 1990
MACK MACK (1978) - SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY
THE 7/8 INCH SPRING EYE BOLTS WITHIN THE SPRING EYE BUSHING HANGER BRACKET OF THE REAR SUSPENSION MAY FAIL.
14,800 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THE SPRING COULD FALL ONTO THE ROAD SURFACE, WITHOUT WARNING TO THE DRIVER, AND A VEHICLE CRASH COULD OCCUR DUE TO THE SUDDEN DRAG OF THE SPRING.
Remedy: REPLACE ALL 7/8 INCH DIAMETER SPRING EYE BOLTS WITH 1 INCH DIAMETER BOLTS.
89V178000 Oct 23, 1989
MACK CH (1989) - SERVICE BRAKES, AIR:CONTROLS:FOOT CONTROL/VALVE
INTERNAL COMPONENTS OF THE E-12 DUAL CIRCUIT AIR BRAKE VALVES MAY BE MISASSEMBLED SO THAT ONE OF THE TAPERED SNAP RINGS IS UPSIDE DOWN.
3,652 vehicles affected Manufacturer: MACK TRUCKS, INCORPORATED
Consequence: THE SNAP RING CAN COME OUT CAUSING THE VALVE TOMALFUNCTION AND APPLY THE TRUCK'S BRAKE SYSTEM WITHOUT WARNING; THIS COULDRESULT IN LOSS OF CONTROL AND A CRASH.
Remedy: REPLACE MISASSEMBLED VALVES.
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