# Service bulletins for the 2016 ARBOC Spirit of Mobility

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

12 bulletins from NHTSA, as of 2026-10-19.

- [AR861](/bulletins/10144772.md), 2018-09-17, Service bulletin: SUSPENSION. 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.
- [AR860](/bulletins/10144771.md), 2018-09-17, Service bulletin: STRUCTURE:FRAME AND MEMBERS. 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. \(Buses between SO\# 2202 and 2736\)
- [AR856](/bulletins/10136815.md), 2018-05-14, Service bulletin: ENGINE AND ENGINE COOLING. AR856\-Customer concern about location of Thomas Compressor in wet areas. Cause\-Engineering design for placement. Correction\- Relocate Thomas Compressor to driver side rear of vehicle.
- [AR854](/bulletins/10129773.md), 2018-03-05, Service bulletin: ELECTRICAL SYSTEM. AR854\-Change Electrical Body to Aux Battery Connections. Complaint\-Electrical body connections tied to starter battery instead of aux battery. Cause\-Electrical design. Correction\-Relocate battery connection and add jumper harness between circuit breaker and solenoid. Vehicles Affected Chevy SOM/SOF.
- [AR847](/bulletins/10118554.md), 2017-10-05, Service bulletin: ELECTRICAL SYSTEM. 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 \(repair as needed\)
- [AR844](/bulletins/10118551.md), 2017-10-05, Service bulletin: SUSPENSION. AR844\-Lower Shock Bracket Replacement\-Complaint\-Restricted shock compression with new upper shock mount location \(AR839\). Cause\-New location of upper shock bracket completed in AR839 \(if completed previously\). Correction\-Remove both existing lower shock brackets and replace. Affects all SOM units with Reyco Granning rear suspension.
- [AR842](/bulletins/10115846.md), 2017-08-25, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; SUSPENSION; FUEL SYSTEM, GASOLINE. 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](/bulletins/10115845.md), 2017-08-25, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY. 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](/bulletins/10115844.md), 2017-08-25, Service bulletin: SUSPENSION; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. 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.
- [AR839](/bulletins/10115843.md), 2017-08-25, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY; SUSPENSION:REAR:SHOCK ABSORBER; STRUCTURE; SUSPENSION:FRONT:SHOCK ABSORBER. AR839\-Upper Shock/Track Bar Mount Replacement. Complaint\-Cracking at upper shock and track bar mounts on chassis frame. Cause\-Concentrated stress loads. Correction\- Drill 1/8" stop holes into frame at the end of the cracks and weld provided retrofit bracket in affected areas.
- [AR833](/bulletins/10110858.md), 2017-08-10, Service bulletin: EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM:WIRING. Dallas DART\-Speaker Mofification\-Complaint\-Rear speakers not functioning. Cause\-Speakers wired to GM OEM connection. Correction\-Re\-wire into PA System. 27 Dallas DART buses affected, built in 2016 \(2607, 2685\-2691, 2695\-2697, 2700\-2703, 2710\-2712, 2715\-2723\)
- [AR831](/bulletins/10110856.md), 2017-08-10, Service bulletin: STRUCTURE; STRUCTURE:FRAME AND MEMBERS. Front Pivot Mount Reinforcement\-Complaint\-Pivot Mounts 1306500\-18 \(RS\) and 1306500\-19 \(CS\)= bolts coming loose/shearing causing bracket failure. Cause\-Inferior bracket support leading to bolt shearing and pivot mount movement. Correction\-Add gussets and welding per instruction. Vehicles Affected\-Units built with the front pivot mount bolted to the ARBOC frame without welding \(SOM only between SO\# 2202 and 2736\)

JSON: [/v1/vehicles/2016_arboc_spirit-of-mobility/bulletins](/v1/vehicles/2016_arboc_spirit-of-mobility/bulletins)

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