Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
AR860
AR860-Front Pivot Mount Inspection and Repair. Complaint-Pivot mount bolts having repeated premature failure. Cause-Spring pivot bolt movement allowed by elongated mounting hole. Correction-Inspect/replace bolt. Labor allowance 2 hours per unit. Vehicles affected-Units that have completed AR831 and built with the front pivot mount bolted to the ARBOC frame without welding. (Buses between SO# 2202 and 2736)
AR861
AR861-Upper Shock/Track Bar Mount Inspection and Repair. Complaint-Upper plates previously installed in AR839 are cracking and pulling away from frame. Cause-Insuffiecient/bad welds not holding under loads. Correction-Inspect/correct welds including drilling 1/8" stop holes into frame at the end of cracks and weld per procedure. Vehicles Affected-All Spirit of Mobility (SOM) units with Reyco Granning rear suspension where AR839 has already been completed.
AR847
AR847-Loose Thermo King Power & Ground Lugs Inspection-Repair. Complaint-Power/Ground lugs looseat connection points at circuit breaker or ground bar. Cause-Lugs incorrectly crimped or loose connections at circuit breaker or ground bar. Correction-Review lugs for secure installation and lug crimp (repair as needed)
AR845
AR845-Replacing Underhood 100A with 120A Circuit Breaker. Complaint-100A circuit breaker tripping prematurely. Cause-Manufacturing tolerances of the breaker and the temperature derate curve associated with the breaker. Correction-Replace underhood 100A with 120A circuit breaker. Affects 2017 SOM units with 100A circuit breakers with aftermarket electrical equipment installed.
AR842
Complaint: Desiccant Dryer Filters failing within months of installation which potentially leads to failure of pressure transducer and Thomas Compressor. Cause-Tanks need to be drained daily instead of previous instruction of every oil change. Correction- Add 1200651 (pull-cord drain valve), 1401863 (drain tank label), and repalce 2002838 (desiccant filter). Affects units with Valid Air Suspension with Thomas Compressor without pull-cord drain valves. This WO is the same document as AR840 but this customer needs their own document. There are no differences.
AR841
Complaint-Dedicated Micros Box Bracket cracking. Cause-Bracket 1309054 does not have enough material between slotted hole and exterior edge of part. Correction- Replace bracket 1309054 with revised bracket 1310546. Affects only Dallas DART buses.
AR840
Complaint: Desiccant Dryer Filters failing within months of installation which potentially leads to failure of pressure transducer and Thomas Compressor. Cause-Tanks need to be drained daily instead of previous instruction of every oil change. Correction- Add 1200651 (pull-cord drain valve), 1401863 (drain tank label), and repalce 2002838 (desiccant filter). Affects units with Valid Air Suspension with Thomas Compressor without pull-cord drain valves.
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.