2004 WINNEBAGO WITH WORKHORSE 22 CHASSIS HAD REAR BRAKES STICKING WHICH BURNED UP THE ABS SENSOR WHEN THE BRAKE DRUMS GOT HOT. I UNDERSTAND THIS IS A COMMON PROBLEM WITH THE W 22 WORKHORSE CHASSIS . *TR
2004 Workhorse W22
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all W22 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
64 reports with mileage · 28 unknown
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 74 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 6 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
92 reports2004 GULF STREAM SUN VOYAGER (WORKHORSE CUSTOM CHASSIS W22) RECALL NOTICE ON CAMPAIGN NO. 60601-C FOR THE CLIP THAT RETAINS THE ENGINE FUEL RAIL PULSE DAMPER MAY FRACTURE LEADING TO A FUEL LEAK. *NJ THE CONSUMER ALSO STATED A MORE SERIOUS PROBLEM WAS THE LOSS OF BRAKES WHILE ON A CAMPING TRIP. WHEN THE CONSUMER WAS APPROACH…
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2004 GULF STREAM SUN VOYAGER (WORKHORSE CUSTOM CHASSIS W22) RECALL NOTICE ON CAMPAIGN NO. 60601-C FOR THE CLIP THAT RETAINS THE ENGINE FUEL RAIL PULSE DAMPER MAY FRACTURE LEADING TO A FUEL LEAK. *NJ THE CONSUMER ALSO STATED A MORE SERIOUS PROBLEM WAS THE LOSS OF BRAKES WHILE ON A CAMPING TRIP. WHEN THE CONSUMER WAS APPROACHING A RED LIGHT, HE ATTEMPTED TO APPLY THE BRAKES, BUT THE PEDAL WENT TO THE FLOORBOARD. HE IMMEDIATELY PULLED THE SAFETY BRAKE AND PUMPED WHAT LITTLE BRAKE PEDAL HE HAD. THE CONSUMER MANAGED TO STOP IN TIME. THE CONSUMER TOOK THE RV TO A REPAIR SHOP AND WAS INFORMED A RECALL HAD BEEN ISSUED FOR THE SAME PROBLEM, WHERE THE BRAKES OVERHEAT AND FAIL. *JB
WINNEBAGO ADVENTURER 2004, SOLD TO ORIGINAL OWNER DEC 6, 2003 - WE ARE SECOND OWNERS - WE PURCHASED IN FEB 2005 W22 WORKHORSE CHASSIS, 22,000 LBS. MOTORHOME IS ON 2003 OR MAYBE 2002 WORKHORSE CHASSIS 31,569 MILES ON COACH AT TIME OF REPAIR 2/19/2009 INCIDENT OCCURRED AT APPROXIMATE 31,400 MILES ON 2/2/2009. FEB 2, 2009…
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WINNEBAGO ADVENTURER 2004, SOLD TO ORIGINAL OWNER DEC 6, 2003 - WE ARE SECOND OWNERS - WE PURCHASED IN FEB 2005 W22 WORKHORSE CHASSIS, 22,000 LBS. MOTORHOME IS ON 2003 OR MAYBE 2002 WORKHORSE CHASSIS 31,569 MILES ON COACH AT TIME OF REPAIR 2/19/2009 INCIDENT OCCURRED AT APPROXIMATE 31,400 MILES ON 2/2/2009. FEB 2, 2009. DROVE MOTORHOME FROM WACHULA TO ORLANDO CAMPGROUND. WE SMELLED SOMETHING LIKE HOT PLASTIC WHEN EXITING MH. HUBS WERE COOL. THERE WAS NOT INDICATION OF A BRAKE PROBLEM DURING THE 70 MILE TRIP FROM WACHULA TO ORLANDO. NO DRAG ON BRAKES, NO LOSS OF BRAKING THAT WOULD ALERT US TO A PROBLEM. TURNED OFF ENGINE TO REGISTER. RESTARTED AND ABS LIGHT WOULD NOT GO OUT WHEN IGNITION WAS ON. CHASSIS IS WORKHORSE. CALLED WORKHORSE AND WERE ADVISED WE COULD DRIVE MOTORHOME TO SEFFNER APPROX 60 MILES AWAY. APPT. SET FOR 2/16/2009. ABS LIGHT REMAINED ON ENTIRE DRIVE. WHEN TECH ADV STARTED UP MOTORHOME THE ABS LIGHT WOULD NOT COME ON. AT LAZY DAYS, DIAGNOSTICS SHOWED ALL SENSORS HAD FAILED, CALIPERS AND ROTORS SHOWED SIGNS OF HEAT. WE HAD BRAKES ON ALL FOUR WHEELS REPLACED. OUR EXTENDED WARRANTY (NATIONAL WARRANTY OF FLORIDA) PAID FOR ONE OF THE FOUR TO BE REPLACED, STATING THAT ACCORDING TO THEIR DIAGNOSTICS ONLY ONE SENSOR HAD FAILED. WE ARE UNABLE TO FINE ANY RECALL FOR THE BRAKES ON OUR YEAR COACH BUT HAVE SEEN SOME SERVICE BULLETINS. THERE WERE SEVERAL OTHER COACHES IN LINE TO BE REPAIRED WITH THE SAME PROBLEM WE HAD. *TR
FACSIMILE FROM CONGRESSMAN MCKEON ON BEHALF OF CONSTITUENT WHO HAS SAFETY CONCERNS WITH BRAKE FAILURES ON MOTORHOMES BUILT ON WORKHORSE CHASSIS CORP W-20 AND W-22. *NJ ALL 4 ROTORS ON THE CONSUMERS RV WERE CRACKED ALL THE WAY THROUGH. THE PROBLEM WAS DISCOVERED DURING ROUTINE MAINTENANCE. *JB
TL*THE CONTACT OWNS A 2004 WINNEBAGO ADVENTURER WORKHORSE CHASSIS. THE CONTACT STATED THAT THE CALIPERS SEIZED AND BURND THROUGH THE BRAKES WHILE DRIVING LONG DISTANCES. THE FAILURE WAS NOTICED WHILE DRIVING 50 MPH. HE FELT THAT THE RV WAS UNSAFE TO DRIVE BECAUSE THE BRAKES WERE CONSTANTLY MALFUNCTIONING WHILE DRIVING. THE …
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TL*THE CONTACT OWNS A 2004 WINNEBAGO ADVENTURER WORKHORSE CHASSIS. THE CONTACT STATED THAT THE CALIPERS SEIZED AND BURND THROUGH THE BRAKES WHILE DRIVING LONG DISTANCES. THE FAILURE WAS NOTICED WHILE DRIVING 50 MPH. HE FELT THAT THE RV WAS UNSAFE TO DRIVE BECAUSE THE BRAKES WERE CONSTANTLY MALFUNCTIONING WHILE DRIVING. THE CURRENT MILEAGE WAS 31,080 AND FAILURE MILEAGE WAS 26,000. UPDATED 02-23-09 *BF UPDATED 02/24/09. *JB
LEFT REAR BRAKE CALIPER LOCKED CAUSING OVERHEATING AND LOSS OF ALL BRAKING, RESULTING IN EMERGENCY MANEUVERING OF MOTOR HOME OUT OF TRAFFIC TO PARKING LOT WITHOUT ANY BRAKE ASSISTANCE. WORKHORSE WARRANTY REPLACED ALL PARTS. NEXT TRIP WE HAD OVERHEATING OF RT REAR, WORKHORSE AUTHORIZED REPAIRS AGAIN. APPROXIMATELY 700 MILES LATE…
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LEFT REAR BRAKE CALIPER LOCKED CAUSING OVERHEATING AND LOSS OF ALL BRAKING, RESULTING IN EMERGENCY MANEUVERING OF MOTOR HOME OUT OF TRAFFIC TO PARKING LOT WITHOUT ANY BRAKE ASSISTANCE. WORKHORSE WARRANTY REPLACED ALL PARTS. NEXT TRIP WE HAD OVERHEATING OF RT REAR, WORKHORSE AUTHORIZED REPAIRS AGAIN. APPROXIMATELY 700 MILES LATER THE COACH WAS PULLING HARD TO THE RIGHT AND THE RT FRONT CALIPER IS STUCK. WORKHORSE REFUSES TO TAKE ANY RESPONSIBILITY FOR REPAIRS LET ALONE THE SAFETY OF THE SITUATION. *TR
THE LEFT REAR ROTOR LOCKED UP CAUSING THE BRAKES TO OVERHEAT AND SMOKE FROM THE WHEEL HOUSING. THIS IS THE SECOND SUCH FAILURE. THE FAILURE HAS NOT BEEN FIXED, THE PARTS ARE ON ORDER. *TR
APPLIED THE BRAKES WHILE TRAVELING AT 50 MPH. SEVERAL MILES LATER, NOTICED A SMELL AND SAW SMOKE OFF OF THE REAR BRAKES. ABS LIGHT ILLUMINATED. PULLED OVER TO THE SIDE AND FOUND THE REAR BRAKES HAD LOCKED. THE REAR CALIPERS, BRAKE PADS, AND ABS SENSORS ON BOTH SIDES NEEDED TO BE REPLACED (OVER $1,000). SERVICE SHOP INDICATE…
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APPLIED THE BRAKES WHILE TRAVELING AT 50 MPH. SEVERAL MILES LATER, NOTICED A SMELL AND SAW SMOKE OFF OF THE REAR BRAKES. ABS LIGHT ILLUMINATED. PULLED OVER TO THE SIDE AND FOUND THE REAR BRAKES HAD LOCKED. THE REAR CALIPERS, BRAKE PADS, AND ABS SENSORS ON BOTH SIDES NEEDED TO BE REPLACED (OVER $1,000). SERVICE SHOP INDICATED THAT THE CALIPER PINS WERE PROPERLY LUBED. THE RUBBER GASKETS AROUND THE PISTONS HAD CHARRED AND TEMPERING MARKS WERE NOTED ON THE CALIPERS FROM THE INCIDENT. *TR
I OWN AND OPERATE A MOTOR HOME SALES FACILITY. THIS YEAR I HAVE PURCHASED FOUR 04-05 MODEL UNITS OF DIFFERENT MAKES ON THE WORKHORSE CHASSIS. ON EVERY UNIT I HAVE HAD A PROBLEM WITH THE ABS SYSTEM. ON A TRIP HOME WITH ONE OF THE UNITS I HAD THE BRAKE PEDAL GO ALMOST ALL THE WAY TO THE FLOOR BUT WAS ABLE TO STOP. FOR THE NEXT FE…
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I OWN AND OPERATE A MOTOR HOME SALES FACILITY. THIS YEAR I HAVE PURCHASED FOUR 04-05 MODEL UNITS OF DIFFERENT MAKES ON THE WORKHORSE CHASSIS. ON EVERY UNIT I HAVE HAD A PROBLEM WITH THE ABS SYSTEM. ON A TRIP HOME WITH ONE OF THE UNITS I HAD THE BRAKE PEDAL GO ALMOST ALL THE WAY TO THE FLOOR BUT WAS ABLE TO STOP. FOR THE NEXT FEW MILES I DROVE VERY SLOW AND KEPT CHECKING MY BRAKES. ALL AT ONCE THE FULL PEDAL CAME BACK AND NEVER GAVE ANY OTHER PROBLEM OTHER THAN THE ABS LIGHT CAME ON AND REQUIRED A NEW SENSOR. EVERY UNIT HAS HAD AT LEAST ONE BAD SENSOR. NOW I HAVE AN 04 IN THE SHOP WITH A WARNING LIGHT BUT NO CODES IN THE COMPUTER AND AN 06 WITH AN ABS LIGHT THE COMES AND GOES WITH NO REASON. SOMEONE NEEDS TO CHECK THIS OUT. TOO MAY UNITS WITH SIMILAR PROBLEMS. *TR
WE CURRENTLY OWN A 2004 ALLEGRO BAY 34XB MOTOR HOME ON WORKHORSE W22 CHASSIS . AT THE TIME OF THE OCCURRENCE IT HAD APPROXIMATELY 14250 MILES ON THE CHASSIS. AFTER DRIVING FROM MYRTLE BEACH ABOUT 35 MILES ON JULY 30, 2008 WE STOPPED TO REFUEL AND SMELLED BURNING BRAKE PADS IN THE REAR OF THE VEHICLE. WHEN WE STARTED BACK OUT…
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WE CURRENTLY OWN A 2004 ALLEGRO BAY 34XB MOTOR HOME ON WORKHORSE W22 CHASSIS . AT THE TIME OF THE OCCURRENCE IT HAD APPROXIMATELY 14250 MILES ON THE CHASSIS. AFTER DRIVING FROM MYRTLE BEACH ABOUT 35 MILES ON JULY 30, 2008 WE STOPPED TO REFUEL AND SMELLED BURNING BRAKE PADS IN THE REAR OF THE VEHICLE. WHEN WE STARTED BACK OUT THE ABS WARNING LIGHT CAME ON AND STAYED ILLUMINATED. SINCE IT WAS LATE IN THE DAY WE DECIDE TO RETURN HOME AND TRY TO GET THE VEHICLE CHECKED THE FOLLOWING MORNING. ON THE WAY HOME WE EXPERIENCED A REDUCTION IN BRAKE PERFORMANCE WHEN STOPPING. ON JULY 31, 2008 WE BROUGHT THE VEHICLE TO LARRY'S AUTO CLINIC AN AUTHORIZED WORKHORSE SERVICE CENTER IN MYRTLE BEACH. ACCORDING TO THE SERVICE CENTER THE CALIPER CAN HANG UP AND CAUSE THE BRAKE PADS TO DRAG ON THE ROTOR SURFACE. OVERHEATING OCCURS, CAUSING DAMAGE TO THE BRAKE COMPONENTS AND AFFECTING BRAKING PERFORMANCE. THE PROBLEM ALSO CAUSES THE BRAKE SYSTEM'S ANTILOCK FEATURES TO BE LOST WHEN THE HEAT DAMAGES THE ANTILOCK WHEEL SENSOR. THEY DETERMINED THAT THE REAR BRAKING SYSTEM HAD BEEN DAMAGED AND NEEDED TO BE REPLACED AS WELL AS THE ABS SENSOR.*TR
Official recalls
209V110000 · 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.
06V225000 · Engine And Engine Cooling
Jun 20, 2006
ON CERTAIN MOTOR HOME AND TRUCK CHASSIS EQUIPPED WITH GENERAL MOTORS 8.1L V8 ENGINES, IMPROPER HARDENING DURING THE HEAT TREATMENT PROCESS CAN CAUSE THE FUEL RAIL PULSE DAMPER RETAINER CLIP TO FRACTURE, RESULTING IN INADEQUATE RETENTION OF THE DAMPER. IF THE DAMPER BECOMES LOOSE, FUEL COULD BE PUMPED BY THE FUEL PUMP INTO THE UNDER HOOD AREA.
Consequence & remedy
Consequence: IN THE PRESENCE OF AN IGNITION SOURCE, A FIRE COULD RESULT.
Remedy: DEALERS WILL REPLACE THE FUEL RAIL PULSE DAMPER RETAINER CLIPS ON THESE ENGINES FREE OF CHARGE. THE RECALL BEGAN ON SEPTEMBER 1, 2006. OWNERS MAY CONTACT WORKHORSE AT 877-294-6773.
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
1EA07016 · 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.
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