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.
Safety risk
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.
Manufacturer 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.
ON CERTAIN MOTORHOME CHASSIS EQUIPPED WITH BOSCH ZOPS, THE PADS CAN DRAG ON THE ROTOR SURFACE DUE TO THE PIN SLIDE.
Safety risk
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.
Manufacturer 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.
Suspension: rear: springs: leaf spring assembly: u-bolt, leaf spring to axle
Manufacturer
WORKHORSE CUSTOM CHASSIS
Vehicles affected
5,011
Reported to NHTSA
2001-10-04
Owners notified
2001-10-10
Defect description
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.
Safety risk
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.
Manufacturer 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.
Owner complaints
A complaint is one person's report to a federal agency. It is not a finding.
Component
Complaints
Median mileage
Electrical system: ignition: switch
1
35,888 mi
Service brakes, hydraulic
1
41,000 mi
The 2000 model has 2 times as many complaints as this one. The 2002 model has about a third as many complaints as this one. These figures reflect raw complaint counts, not failure rates. Higher-selling model years naturally receive more complaints.
Safety recall repairs are provided free of charge by franchised dealers, regardless of vehicle age or mileage. This page displays aggregated data for the model year. To check recall status for a specific vehicle, search its VIN at nhtsa.gov.