{"nhtsa_id":10179062,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-09-01","date":"2020-08-17","document_id":"CALFTL32-006","mfr_campaign":null,"replaces":null,"component":"SUSPENSION; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL","mfr_system":null,"summary":"Customer Advisory Letter for Hendrickson Primaax EX 69,000 lb Tri-Axle Rear Air Suspension Height-Control Valve Relocation. The attached document provides work instructions for relocating the height-control valve downward 1.62 inches (41.3 mm) to prevent the linkage from protruding above the top flange of the frame when the suspension air is dumped.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10179062-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10179062-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10179062","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"labels-manuals","name":"Labels and manuals","parent":null},{"id":"suspension","name":"Suspension","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FREIGHTLINER","model":"BUSINESS CLASS M2","year_from":2016,"year_to":2021,"match":null,"vehicle_ids":[]}],"as_of":"2026-10-19","note":"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.","attribution":[]}