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2001 Workhorse W22

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

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How this year compares

Owner complaints by model year

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Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

Limited mileage data: 7 of 10 reports include usable mileage. There isn’t enough coverage to show a useful chart.

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Service Brakes, Hydraulic. Review the 9 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Service Brakes. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Suspension. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

0 crash reports1 fire reports0 injury reports

What owners actually said

10 reports
5,000 miles · Jul 22, 2013
Service Brakes

TL* THE CONTACT OWNS A 2001 MONACO MONARCH EQUIPPED WITH A WORKHORSE W22 CHASSIS. THE CONTACT WAS DRIVING APPROXIMATELY 58 MPH AND APPLIED THE BRAKES, WHICH BEGAN TO PULSATE ABNORMALLY. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHERE THE FRONT BRAKE PADS, CALIPERS AND BOTH FRONT ROTORS WERE REPLACED. THE REPAIRS WERE MADE TH…

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TL* THE CONTACT OWNS A 2001 MONACO MONARCH EQUIPPED WITH A WORKHORSE W22 CHASSIS. THE CONTACT WAS DRIVING APPROXIMATELY 58 MPH AND APPLIED THE BRAKES, WHICH BEGAN TO PULSATE ABNORMALLY. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHERE THE FRONT BRAKE PADS, CALIPERS AND BOTH FRONT ROTORS WERE REPLACED. THE REPAIRS WERE MADE THREE SEPARATE TIMES. THE FAILURE PERSISTED AFTER EACH REPAIR WAS PERFORMED. THE CONTACT PLANNED TO REPLACE THE PASSENGER'S SIDE ROTOR HIMSELF. THE MANUFACTURER WAS NOTIFIED OF THE DEFECT. THE APPROXIMATE FAILURE MILEAGE WAS 5,000.

NHTSA ODI #10526214

Mileage unknown · Aug 9, 2010
Service Brakes, Hydraulic

TL*THE CONTACT OWNS A 2001 WORKHORSE W22 CHASSIS. THE CONTACT STATED THAT THE BRAKES MALFUNCTIONED AND LOCKED WHILE HE WAS DRIVING WHICH CAUSED THE ABS SENSOR TO MELT. THE BRAKES WERE REPLACED TWICE BUT THE FAILURE CONTINUED TO OCCUR. THE CONTACT REFERENCED RECALL 09V110000 AND STATED THAT WHEN HE CALLED THE MANUFACTURER, HE WAS…

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TL*THE CONTACT OWNS A 2001 WORKHORSE W22 CHASSIS. THE CONTACT STATED THAT THE BRAKES MALFUNCTIONED AND LOCKED WHILE HE WAS DRIVING WHICH CAUSED THE ABS SENSOR TO MELT. THE BRAKES WERE REPLACED TWICE BUT THE FAILURE CONTINUED TO OCCUR. THE CONTACT REFERENCED RECALL 09V110000 AND STATED THAT WHEN HE CALLED THE MANUFACTURER, HE WAS TOLD THAT REPAIRS WERE NOT SCHEDULED TO BE PERFORMED UNTIL OCTOBER 2010. HE WAS ALSO TOLD THAT IF THE PROBLEM OCCURRED AGAIN, HE SHOULD CONTINUE PUMPING THE BRAKE PEDAL TO ACTIVATE THE BRAKING SYSTEM. THE CONTACT FELT THAT IT WAS A SAFETY CONCERN WHICH COULD CAUSE A FIRE OR CRASH TO OCCUR. THE CURRENT MILEAGE WAS APPROXIMATELY 31,000. THE FAILURE MILEAGE WAS UNKNOWN.

NHTSA ODI #10348199

40,200 miles · Jun 17, 2010
Service Brakes, HydraulicFire

TL* THE CONTACT OWNS A 2002 FLEETWOOD SOUTH WIND RV WITH 2001 WORKHORSE W22 CHASSIS. WHILE DRIVING AT 15 MPH, THE CONTACT NOTICED AN UNUSUAL BURNING ODOR AND THE BRAKES WERE NOT OPERATING AS NORMAL. THE CONTACT DISCOVERED THE BRAKE FLUID WAS EXTREMELY LOW AND WAS CAUSING THE BRAKE FAILURE. THE MANUFACTURER VERIFIED THE VEHICLE W…

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TL* THE CONTACT OWNS A 2002 FLEETWOOD SOUTH WIND RV WITH 2001 WORKHORSE W22 CHASSIS. WHILE DRIVING AT 15 MPH, THE CONTACT NOTICED AN UNUSUAL BURNING ODOR AND THE BRAKES WERE NOT OPERATING AS NORMAL. THE CONTACT DISCOVERED THE BRAKE FLUID WAS EXTREMELY LOW AND WAS CAUSING THE BRAKE FAILURE. THE MANUFACTURER VERIFIED THE VEHICLE WAS INVOLVED IN NHTSA CAMPAIGN ID NUMBER: 09V110000 (SERVICE BRAKES, HYDRAULIC) AND THAT THE VEHICLE WOULD NEED TO BE INSPECTED BEFORE RECALL REPAIRS WERE PERFORMED. THE CONTACT WAS NOT COMFORTABLE WITH DRIVING THE VEHICLE TO THE DEALER FOR FEAR OF A POSSIBLE FAILURE OR CRASH. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGES WERE 40, 200. UPDATED 07/29/10 *BF THE CONSUMER EXPERIENCED BRAKE FAILURE DUE TO FAULTY PISTON IN THE BOSCH CALIPERS. THE ABS LIGHT DID NOT ILLUMINATE TO INDICATED THERE WAS A BURNT SENSOR. UPDATED 08/03/10*JB

NHTSA ODI #10336756

Mileage unknown · Jun 14, 2010
Service Brakes, Hydraulic

LETTER FROM SENATOR SESSIONS ON BEHALF OF CONSTITUENT RE BRAKE FAILURES ON HIS MOTORHOME (DOT/I#2010-1141)*TGW 2001 WORKHORSE W22 CHASSIS. THE CONSUMER STATED THE FIRST TIME HE LOST BRAKING HE WAS DESCENDING A NARROW TWISTING MOUNTAIN ROAD. THE CONSUMER WAS ABLE TO BRING THE RV TO COMPLETE AND SAFE STOP USING THE HAND BRAKE AND…

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LETTER FROM SENATOR SESSIONS ON BEHALF OF CONSTITUENT RE BRAKE FAILURES ON HIS MOTORHOME (DOT/I#2010-1141)*TGW 2001 WORKHORSE W22 CHASSIS. THE CONSUMER STATED THE FIRST TIME HE LOST BRAKING HE WAS DESCENDING A NARROW TWISTING MOUNTAIN ROAD. THE CONSUMER WAS ABLE TO BRING THE RV TO COMPLETE AND SAFE STOP USING THE HAND BRAKE AND DOWNSHIFTING. THE CONSUMER DISCOVERED THE FRONT WHEEL WAS SMOKING AND NEARLY CAUGHT ON FIRE. THE RV WAS TOWED THE NEXT DAY, TO THE NEAREST WORKHORSE FACILITY. THE DEALER REPLACED ALL THE BURNED PARTS, WHICH INCLUDED THE CALIPERS, ABS SENSORS, PIN KIT, ROTOR, OIL SEALS AND PADS. WORKHORSE WAS AWARE OF THE DESIGN PROBLEM IN THE BRAKES RELATED TO A TYPE OF PLASTIC INSTEAD OF STEEL COMPONENT IN THE CALIPER PISTONS THAT EXPANDED WITH HEAT WHICH PREVENTED THE BRAKE FROM RELEASING FROM THE BRAKING POSITION. IN JANUARY 2004, THE CONSUMER AGAIN LOST BRAKING ABILITY, NARROWLY AVOIDING A REAR END COLLISION WITH AN 18 WHEELER BY SWERVING INTO THE EMERGENCY LANE. AGAIN, THE RV WAS TO TOWED THE DEALER. UPON INSPECTION, THEY DETERMINED BOTH REAR CALIPERS HAD STUCK WHICH CAUSED OVERHEATING OF THE BRAKE FLUID TO A GEL. THE CONSUMER STATED AT LEAST THREE TIMES, THE BRAKES HAVE OVERHEATED DUE TO STUCK CALIPERS REQUIRING REMOVAL OF THE WHEELS AND LUBRICATING THE CALIPER PINS. IT WASN'T UNTIL JULY 2005, TWO YEARS AFTER THE CONSUMER EXPERIENCED A NEAR FATAL ACCIDENT DUE TO BRAKE FAILURE, THAT WORKHORSE SENT HIM COPY OF A DEALER BULLETIN 50401-C DESCRIBING A DEFECT INVOLVING BRAKE CALIPER HANGING IN A PARTIAL APPLY POSITION THAT CAN GET EXTREMELY HOT CAUSING SEVERE DAMAGE TO BRAKE PARTS. WORKHORSE HAS DENIED THE CONSUMER REIMBURSEMENT TWICE. *JB UPDATED 09/09/11. *JB

NHTSA ODI #10335953

27,000 miles · Feb 24, 2010
Service Brakes, Hydraulic

TL*THE CONTACT OWNS A 2001 WORKHORSE W22. WHILE DRIVING 30 MPH WHEN HE TRIED TO STOP AT A RED LIGHT HIS BRAKES DID NOT WORK. THE CONTACT CONTINUED TO APPLY PRESSURE TO THE BRAKES AND THE VEHICLE STILL WOULDN'T SLOW DOWN. HE PULLED INTO A STORE PARKING LOT WERE HE FINALLY GOT THE VEHICLE TO STOP. THE VIN WAS UNAVAILABLE. THE FAIL…

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TL*THE CONTACT OWNS A 2001 WORKHORSE W22. WHILE DRIVING 30 MPH WHEN HE TRIED TO STOP AT A RED LIGHT HIS BRAKES DID NOT WORK. THE CONTACT CONTINUED TO APPLY PRESSURE TO THE BRAKES AND THE VEHICLE STILL WOULDN'T SLOW DOWN. HE PULLED INTO A STORE PARKING LOT WERE HE FINALLY GOT THE VEHICLE TO STOP. THE VIN WAS UNAVAILABLE. THE FAILURE MILEAGE WAS 27,000 AND THE CURRENT MILEAGE WAS 28,000.

NHTSA ODI #10313636

49,000 miles · Aug 2, 2009
Service Brakes, Hydraulic

2001 WORKHORSE CHASSIS WITH BOSCH 4 WHEEL DISC BRAKES. COMPLETE SYSTEM REPLACED ONE TIME AT OWNERS EXPENSE. SINCE REPLACEMENT, THERE HAVE TWO INCIDENTS OF TOTAL BRAKE FAILURE WHICH COULD HAVE CAUSED A TERRIBLE CRASH HAD THERE NOT BEEN A DITCH TO RUN INTO. THE COACH IS A MONACO. MONACO NO LONGER EXISTS AND WORKHORSE AND BOS…

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2001 WORKHORSE CHASSIS WITH BOSCH 4 WHEEL DISC BRAKES. COMPLETE SYSTEM REPLACED ONE TIME AT OWNERS EXPENSE. SINCE REPLACEMENT, THERE HAVE TWO INCIDENTS OF TOTAL BRAKE FAILURE WHICH COULD HAVE CAUSED A TERRIBLE CRASH HAD THERE NOT BEEN A DITCH TO RUN INTO. THE COACH IS A MONACO. MONACO NO LONGER EXISTS AND WORKHORSE AND BOSCH GO BACK AND FORTH ABOUT WHO IS AT FAULT AND NO ONE WILL FIX THE PROBLEM. MY FAMILY AND I ARE IN DANGER EVERY TIME WE CHOOSE TO USE THE MOTORHOME. *TR

NHTSA ODI #10279090

27,000 miles · Jan 19, 2008
Service Brakes, Hydraulic

FOUR WHEEL BRAKE FAILURE WITH CRACKED ROTORS AND REPLACEMENT OF ROTORS, PADS, AND CALIPERS REQUIRED. *TR

NHTSA ODI #10215444

19,335 miles · Oct 26, 2004
Service Brakes, Hydraulic

WE HAVE A 2001 WINNEBAGO ADVENTURER CLASS A MOTORHOME ON A WORKHORSE W22 CHASSIS. I AM WRITING REGARDING THE ABS BRAKING SYSTEM. IN AUGUST 2004, WHILE DRIVING, IT FELT LIKE THE RV WAS GETTING A FLAT TIRE. WE PULLED OVER AND FOUND NO EVIDENCE OF THAT. ALL THE INSTRUMENT LIGHTS AND GAUGES WERE WORKING PROPERLY AND NO WARNING L…

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WE HAVE A 2001 WINNEBAGO ADVENTURER CLASS A MOTORHOME ON A WORKHORSE W22 CHASSIS. I AM WRITING REGARDING THE ABS BRAKING SYSTEM. IN AUGUST 2004, WHILE DRIVING, IT FELT LIKE THE RV WAS GETTING A FLAT TIRE. WE PULLED OVER AND FOUND NO EVIDENCE OF THAT. ALL THE INSTRUMENT LIGHTS AND GAUGES WERE WORKING PROPERLY AND NO WARNING LIGHTS. ON CONTINUING DOWN THE HIGHWAY, I NOTICED THAT WHEN I APPLIED THE BRAKE, IT WOULD STEER TO THE RIGHT QUITE NOTICEABLY, AND THERE WAS ALSO A SMELL OF BURNING PLASTIC. THE MECHANIC REPLACED THE LEFT FRONT CALIPER, THE MELTED ABS SENSOR AND THE CRACKED ROTOR DUE TO EXCESSIVE HEAT. I CALLED WORKHORSE AND THEY HAD NO BRAKE, SENSOR OR ROTOR PROBLEMS REPORTED. WE USED OUR EXTENDED WARRANTY. THE TOTAL BILL WAS $1,252.67. WARRANTY PAID $356.68 AND WE PAID $895.99. THE RV HAD 19,335 MILES. SINCE THEN WE HAVE READ OF A COUPLE OF PEOPLE WITH SIMILAR BRAKE SENSOR PROBLEMS, AND TALKED WITH A CAMPER WHO HAD REPLACED THE FRONT BRAKE PADS THREE TIMES IN LESS THAN 20,000 MILES ON WORKHORSE CHASSIS. I AM BEGINNING TO THINK THAT THIS IS NOT AN ISOLATED INCIDENT AND MAYBE THERE SHOULD BE A RECALL. THERE WAS EVIDENTLY SOME MALFUNCTION FOR THE ABS LIGHT NOT TO GIVE US A WARNING WHEN I CHECKED THE DASHBOARD. WE HAVE BRAGGED ON THE WORKHORSE CHASSIS TO SO MANY OF OUR FRIENDS AND HAVE BEEN REALLY PLEASED WITH ITS PERFORMANCE UP TO THIS POINT. I WOULD LIKE TO THINK THAT WORKHORSE WOULD CHECK INTO THE PROBLEM AND REIMBURSE US AND THE WARRANTY CO.*AK

NHTSA ODI #10096447

Mileage unknown · Oct 25, 2004
Service Brakes, Hydraulic

DEALERSHIP WAS UNABLE TO PERFORM THE BOSCH ZOPS BRAKE CALIPER 04V084000 RECALL REPAIRS BECAUSE THE PARTS WERE NOT AVAILABLE FOR A MONTH.*AK

NHTSA ODI #10097604

16,367 miles · Jul 13, 2004
Service Brakes, HydraulicSuspension

WE HAVE A 2001 DUTCHSTAR CLASS A MOTORHOME, BUILT ON WORKHORSE CHASSIS NUMBER 28321. I AM WRITING FOR A NUMBER OF REASONS. THE FIRST BEING THAT I AM REQUESTING INFORMATION ON POSSIBLE RECALLS THAT INCLUDE THIS UNIT. I UNDERSTAND THAT THERE ARE TWO CAMPAIGNS FOR THE 2001 WORKHORSE CHASSIS, NHTSA # 04V084000, HAVING TO DO WIT…

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WE HAVE A 2001 DUTCHSTAR CLASS A MOTORHOME, BUILT ON WORKHORSE CHASSIS NUMBER 28321. I AM WRITING FOR A NUMBER OF REASONS. THE FIRST BEING THAT I AM REQUESTING INFORMATION ON POSSIBLE RECALLS THAT INCLUDE THIS UNIT. I UNDERSTAND THAT THERE ARE TWO CAMPAIGNS FOR THE 2001 WORKHORSE CHASSIS, NHTSA # 04V084000, HAVING TO DO WITH SERVICE BRAKES, HYDRAULIC AND # 01V317000, HAVING TO DO WITH SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY:U-BOLT, LEAF SPRING TO AXLE. I WOULD LIKE TO KNOW WHETHER OUR UNIT IS INCLUDED AND IF SO, WHY WE WERE NOT NOTIFIED. THE SECOND REASON I AM WRITING HAS TO DO WITH THE ABS BRAKE SENSORS ON THE FRONT WHEELS. IN OCTOBER OF 2003, WE HAD TO HAVE THE RIGHT BRAKE SENSOR REPLACED AFTER IT HAD BURNED UP WITH ONLY 13,523 MILES ON THE UNIT. ON JULY 6, 2004, BOTH FRONT ABS BRAKE SENSORS BURNED UP AND REQUIRED REPLACING WITH ONLY 16,367 MILES. LUCKILY, WE WERE TRAVELING AT A LOW SPEED AS THE LACK OF THE SENSORS APPARENTLY CAUSED BOTH FRONT BRAKES TO LOCK UP, WHICH COULD HAVE BEEN EXTREMELY DANGEROUS HAD WE BEEN TRAVELING ON THE HIGHWAY INSTEAD OF A CITY STREET. WHILE I REALIZE THAT THE UNIT IS OUT OF THE 3 YEAR WARRANTY, THIS APPEARS TO BE A MANUFACTURERS DEFECT WHEN THE SAME UNITS BURN UP WITHIN 3000 MILES. I HAVE ALSO SPOKEN TO A FRIEND THAT HAS A 2002 W22 CHASSIS AND SHE HAS HAD THE SAME PROBLEM, CAUSING HER TO REPLACE BOTH FRONT SENSORS. THESE SENSORS SHOULD BE DESIGNED TO LAST A LOT MORE THAN 16,000 MILES AND CERTAINLY MORE THAN 3,000 MILES. I FEEL THAT WORKHORSE SHOULD TAKE RESPONSIBILITY AND REIMBURSE US FOR THE COST ($365.35) OF THE REPLACEMENT OF BOTH ABS BRAKE SENSORS. *LA

NHTSA ODI #10081001

Official recalls

3

09V110000 · Service Brakes, Hydraulic

Apr 3, 2009

NAVISTAR IS RECALLING CERTAIN MODEL YEAR MY 2001-2008 WORKHORSE W20, W21 AND W22 CHASSIS AND CERTAIN MODEL YEAR 2009 THROUGH 2011 MONACO RV ADMIRAL, ARISTA, MONARCH, AND RIPTIDE RECREATIONAL VEHICLES EQUIPPED WITH AXLES THAT INCLUDE BOSCH ZOPS OR ZOHT PIN SLIDE HYDRAULIC DISC BRAKES. WHEN COMBINED WITH OCCASIONAL OR SEASONAL VEHICLE OPERATION MAY EXPERIENCE CALIPERS STICKING IN THE APPLIED POSITION. THIS CAN RESULT IN ABNORMAL HEAT GENERATION AT THE WHEEL END CAUSING BRAKE DRAG. THE DRIVER WOULD NORMALLY HAVE WARNING OF THE BRAKE DRAG IF UNDETECTED BY THE DRIVER.

Consequence & remedy

Consequence: THE TEMPERATURE INCREASE AT THE WHEEL END CAN EVENTUALLY LEAD TO SOFT PEDAL CONDITIONS DUE TO BRAKE FLUID BOIL, AND POSSIBLE EXTENDED STOPPING DISTANCE INCREASING THE RISK OF A CRASH.

Remedy: WORKHORSE DEALERS WILL REPLACE ALL FOUR BOSCH BRAKE CALIPER ASSEMBLIES FREE OF CHARGE. THE SAFETY RECALL BEGAN ON SEPTEMBER 16, 2010. OWNERS MAY CONTACT WORKHORSE AT 1-877-246-7731.

04V084000 · Service Brakes, Hydraulic

Feb 18, 2004

ON CERTAIN MOTORHOME CHASSIS EQUIPPED WITH BOSCH ZOPS, THE PADS CAN DRAG ON THE ROTOR SURFACE DUE TO THE PIN SLIDE.

Consequence & remedy

Consequence: A HANG UP OR LOCK UP MAY CAUSE THE CALIPERS TO OVER HEAT AND NOT ALLOW THE DRIVER TO STOP SAFELY. THIS COULD CAUSE OVERHEATING OF THE BRAKE CALIPERS WHICH COULD RESULT IN A VEHICLE FIRE.

Remedy: DEALERS WILL INSPECT, REPAIR AND REPLACE ACCORDING TO THE PROCEDURE DEVELOPED BY BOSCH (SEE CAMPAIGN 03E064000). THE RECALL BEGAN ON AUGUST 1, 2004. OWNERS SHOULD CONTACT WORKHORSE AT 1-877-294-6773.

01V317000 · Suspension:rear:springs:leaf Spring ASSEMBLY:U-BOLT, Leaf Spring To Axle

Oct 4, 2001

VEHICLE DESCRIPTION: MOTOR HOME AND COMMERCIAL CHASSIS. THE REAR AXLE U-BOLTS MAY NOT BE TIGHTENED CORRECTLY DUE TO RANDOM FAILURE OF PRODUCTION TOOLING IN THE SPECIFIED TIME SPAN.

Consequence & remedy

Consequence: LOW U-BOLT TORQUE CAN RESULT IN U-BOLTS COMING LOOSE AND NOT PROPERLY RETAINING THE REAR AXLE TO THE VEHICLE, RESULTING IN A LOSS OF VEHICLE CONTROL.

Remedy: DEALERS WILL TIGHTEN THE REAR AXLE U-BOLTS. OWNER NOTIFICATION IS EXPECTED TO BEGIN OCTOBER 10, 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 WORKHORSE AT 1-877-946-7731.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

2

EA07016 · Overheating Disc Brake Caliper

Opened Nov 16, 2007 · Closed Aug 19, 2009

Status: closed (inferred from source dates) · Service Brakes, Hydraulic

THE EA WAS OPENED TO GAIN A TECHNICAL UNDERSTANDING OF THE CAUSES FOR ONE OR MORE DISC BRAKE CALIPERS ON A SUBJECT VEHICLE TO SUFFER SEVERE OVERHEATING. THE OVERHEATING CAUSED BRAKE DRAG, MELTING ABS SENSORS, SMOKING, BRAKE LINING FIRES, AND IN SOME CASES BOILING BRAKE FLUID RESULTING IN DIMINISHED STOPPING CAPABILITY.BASED ON TESTING, WARRANTY AND COMPLAINT DATA ANALYSIS, FIELD TRIPS AND INTERVIEWS WITH OWNERS, MECHANICS AND SERVICE MANAGERS, ODI BELIEVES THE LIKELY CAUSE OF THE ALLEGED DEFECT IS WATER SWELL OF THE PHENOLIC CALIPER PISTON AND SUBSEQUENT FAILURE OF THE PISTON TO FULLY RETURN AFTER THE PEDAL IS RELEASED.A TECHNICAL REPORT IS ATTACHED WITH FULL DETAILS.

Additional source detail variants (7)

Service Brakes, Hydraulic

THE EA WAS OPENED TO GAIN A TECHNICAL UNDERSTANDING OF THE CAUSES FOR ONE OR MORE DISC BRAKE CALIPERS ON A SUBJECT VEHICLE TO SUFFER SEVERE OVERHEATING. THE OVERHEATING CAUSED BRAKE DRAG, MELTING ABS SENSORS, SMOKING, BRAKE LINING FIRES, AND IN SOME CASES BOILING BRAKE FLUID RESULTING IN DIMINISHED STOPPING CAPABILITY.BASED ON TESTING, WARRANTY AND COMPLAINT DATA ANALYSIS, FIELD TRIPS AND INTERVIEWS WITH OWNERS, MECHANICS AND SERVICE MANAGERS, ODI BELIEVES THE LIKELY CAUSE OF THE ALLEGED DEFECT IS WATER SWELL OF THE PHENOLIC CALIPER PISTON AND SUBSEQUENT FAILURE OF THE PISTON TO FULLY RETURN AFTER THE PEDAL IS RELEASED.A TECHNICAL REPORT IS ATTACHED WITH FULL DETAILS.

Service Brakes, Hydraulic

THE EA WAS OPENED TO GAIN A TECHNICAL UNDERSTANDING OF THE CAUSES FOR ONE OR MORE DISC BRAKE CALIPERS ON A SUBJECT VEHICLE TO SUFFER SEVERE OVERHEATING. THE OVERHEATING CAUSED BRAKE DRAG, MELTING ABS SENSORS, SMOKING, BRAKE LINING FIRES, AND IN SOME CASES BOILING BRAKE FLUID RESULTING IN DIMINISHED STOPPING CAPABILITY.BASED ON TESTING, WARRANTY AND COMPLAINT DATA ANALYSIS, FIELD TRIPS AND INTERVIEWS WITH OWNERS, MECHANICS AND SERVICE MANAGERS, ODI BELIEVES THE LIKELY CAUSE OF THE ALLEGED DEFECT IS WATER SWELL OF THE PHENOLIC CALIPER PISTON AND SUBSEQUENT FAILURE OF THE PISTON TO FULLY RETURN AFTER THE PEDAL IS RELEASED.A TECHNICAL REPORT IS ATTACHED WITH FULL DETAILS.

Service Brakes, Hydraulic

THE EA WAS OPENED TO GAIN A TECHNICAL UNDERSTANDING OF THE CAUSES FOR ONE OR MORE DISC BRAKE CALIPERS ON A SUBJECT VEHICLE TO SUFFER SEVERE OVERHEATING. THE OVERHEATING CAUSED BRAKE DRAG, MELTING ABS SENSORS, SMOKING, BRAKE LINING FIRES, AND IN SOME CASES BOILING BRAKE FLUID RESULTING IN DIMINISHED STOPPING CAPABILITY.BASED ON TESTING, WARRANTY AND COMPLAINT DATA ANALYSIS, FIELD TRIPS AND INTERVIEWS WITH OWNERS, MECHANICS AND SERVICE MANAGERS, ODI BELIEVES THE LIKELY CAUSE OF THE ALLEGED DEFECT IS WATER SWELL OF THE PHENOLIC CALIPER PISTON AND SUBSEQUENT FAILURE OF THE PISTON TO FULLY RETURN AFTER THE PEDAL IS RELEASED.A TECHNICAL REPORT IS ATTACHED WITH FULL DETAILS.

Service Brakes, Hydraulic

THE EA WAS OPENED TO GAIN A TECHNICAL UNDERSTANDING OF THE CAUSES FOR ONE OR MORE DISC BRAKE CALIPERS ON A SUBJECT VEHICLE TO SUFFER SEVERE OVERHEATING. THE OVERHEATING CAUSED BRAKE DRAG, MELTING ABS SENSORS, SMOKING, BRAKE LINING FIRES, AND IN SOME CASES BOILING BRAKE FLUID RESULTING IN DIMINISHED STOPPING CAPABILITY.BASED ON TESTING, WARRANTY AND COMPLAINT DATA ANALYSIS, FIELD TRIPS AND INTERVIEWS WITH OWNERS, MECHANICS AND SERVICE MANAGERS, ODI BELIEVES THE LIKELY CAUSE OF THE ALLEGED DEFECT IS WATER SWELL OF THE PHENOLIC CALIPER PISTON AND SUBSEQUENT FAILURE OF THE PISTON TO FULLY RETURN AFTER THE PEDAL IS RELEASED.A TECHNICAL REPORT IS ATTACHED WITH FULL DETAILS.

Service Brakes, Hydraulic

THE EA WAS OPENED TO GAIN A TECHNICAL UNDERSTANDING OF THE CAUSES FOR ONE OR MORE DISC BRAKE CALIPERS ON A SUBJECT VEHICLE TO SUFFER SEVERE OVERHEATING. THE OVERHEATING CAUSED BRAKE DRAG, MELTING ABS SENSORS, SMOKING, BRAKE LINING FIRES, AND IN SOME CASES BOILING BRAKE FLUID RESULTING IN DIMINISHED STOPPING CAPABILITY.BASED ON TESTING, WARRANTY AND COMPLAINT DATA ANALYSIS, FIELD TRIPS AND INTERVIEWS WITH OWNERS, MECHANICS AND SERVICE MANAGERS, ODI BELIEVES THE LIKELY CAUSE OF THE ALLEGED DEFECT IS WATER SWELL OF THE PHENOLIC CALIPER PISTON AND SUBSEQUENT FAILURE OF THE PISTON TO FULLY RETURN AFTER THE PEDAL IS RELEASED.A TECHNICAL REPORT IS ATTACHED WITH FULL DETAILS.

Service Brakes, Hydraulic

THE EA WAS OPENED TO GAIN A TECHNICAL UNDERSTANDING OF THE CAUSES FOR ONE OR MORE DISC BRAKE CALIPERS ON A SUBJECT VEHICLE TO SUFFER SEVERE OVERHEATING. THE OVERHEATING CAUSED BRAKE DRAG, MELTING ABS SENSORS, SMOKING, BRAKE LINING FIRES, AND IN SOME CASES BOILING BRAKE FLUID RESULTING IN DIMINISHED STOPPING CAPABILITY.BASED ON TESTING, WARRANTY AND COMPLAINT DATA ANALYSIS, FIELD TRIPS AND INTERVIEWS WITH OWNERS, MECHANICS AND SERVICE MANAGERS, ODI BELIEVES THE LIKELY CAUSE OF THE ALLEGED DEFECT IS WATER SWELL OF THE PHENOLIC CALIPER PISTON AND SUBSEQUENT FAILURE OF THE PISTON TO FULLY RETURN AFTER THE PEDAL IS RELEASED.A TECHNICAL REPORT IS ATTACHED WITH FULL DETAILS.

Service Brakes, Hydraulic

THE EA WAS OPENED TO GAIN A TECHNICAL UNDERSTANDING OF THE CAUSES FOR ONE OR MORE DISC BRAKE CALIPERS ON A SUBJECT VEHICLE TO SUFFER SEVERE OVERHEATING. THE OVERHEATING CAUSED BRAKE DRAG, MELTING ABS SENSORS, SMOKING, BRAKE LINING FIRES, AND IN SOME CASES BOILING BRAKE FLUID RESULTING IN DIMINISHED STOPPING CAPABILITY.BASED ON TESTING, WARRANTY AND COMPLAINT DATA ANALYSIS, FIELD TRIPS AND INTERVIEWS WITH OWNERS, MECHANICS AND SERVICE MANAGERS, ODI BELIEVES THE LIKELY CAUSE OF THE ALLEGED DEFECT IS WATER SWELL OF THE PHENOLIC CALIPER PISTON AND SUBSEQUENT FAILURE OF THE PISTON TO FULLY RETURN AFTER THE PEDAL IS RELEASED.A TECHNICAL REPORT IS ATTACHED WITH FULL DETAILS.

EA03003 · Overheating Front And Rear Brakes

Opened Apr 9, 2003 · Closed Mar 3, 2004

Status: closed (inferred from source dates) · Service Brakes, Hydraulic:foundation Components

THIS INVESTIGATION WAS DERIVED FROM INFORMATION GATHERED DURING PE02-046, BOSCH DISC BRAKE CALIPERS.THIS INVESTIGATION FOCUSED ON THE VEHICLE MANUFACTURER, NEWMAR.SUBJECT VEHICLES WERE THOSE BUILT WITH A HYDRAULIC BRAKE SYSTEM INCORPORATING THE BOSCH ZERO OFFSET PIN SLIDE (ZOPS) CALIPERS.ODI'SCONCERN WASEXCESSIVE WHEEL END HEAT, POSSIBLY RESULTING IN A WHEEL END FIRE.DURING THE INVESTIGATION, ODI DISCOVERED TWO SPECIFIC NEWMAR VEHICLE MODELS, THOSE BUILT ON NEWMAR CHASSIS AND THOSE BUILT ON A WORKHORSE CHASSIS. AS A RESULT OF THE AGENY'S INVESTIGATION INTO THIS MATTER, ALL NEWMAROWNERS WILL BE NOTIFIED (04V-019) AND THE REMEDY WILL BE APPLIED TO THEIR VEHICLES. SOME NEWMAR VEHICLES (1,795) BUILT ON THE WORKHORSE CHASSIS ARE BEING RECALLED BY WORKHORSE (04V-084).THIS INVESTIGATION IS CLOSED.FURTHER DETAILS ARE PROVIDED ON PAGES 2, 3, AND 4.COPIES OF BOTH SAFETY RECALLS ARE ATTACHED.