{"nhtsa_id":10146187,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-10-29","date":"2018-08-01","document_id":"17730-301-Rev C","mfr_campaign":null,"replaces":null,"component":"SUSPENSION","mfr_system":null,"summary":"Operation Name: Hendrickson Truck Commercial Vehical Systems Document Name: Technical Procedure - ULTIMAAX Rear Suspension for Kenworth Vehicles - Service Instructions Summary: This document provides preventive maintenance, service, repair and rebuild instructions for Hendrickson ULTIMAAX rear suspension systems equipped on Kenworth vehicles.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10146187-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10146187-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10146187","components":[{"id":"suspension","name":"Suspension","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"HENDRICKSON","model":"HENDRICKSON","year_from":null,"year_to":null,"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":[]}