Technical Service Bulletins
Search 172,063 manufacturer communications covering 879 vehicle makes from 1955 to 2025.
Showing 2,196 bulletins for CUMMINS
TSB180078-080520
Aug 5, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of Fault Code 36 Shutdowns on generators due to hot air recirculation. In certain situations, hot air coming from the ventilation exhaust can be recirculated into th
TSB210162-080420
Aug 4, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of a cooling fan belt chirp caused by misalignment between the fan and compressor pulleys.
TSB180032-080320
Aug 4, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution for an air leak from the air compressor inlet hose, Fault Code 3389, and/or a drop in boost caused by a zip tie retaining the air governor lines rupturing the inlet h
TSB170054-080320
Aug 3, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of injector sleeve seal leakage causing fuel and coolant cross-contamination. Shrinkage of injector sleeve seal material can create a leak path between cylinder head
TSB210165-080220
Aug 2, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of closed crankcase ventilation system engine lubricating oil carryover and associated turbocharger lubricating oil leak.
TAIB-0994
Jul 19, 2021
100000 POWER TRAIN
Notice related to servicing Mechatronic Transmission Module (MTM) due to loose rail cover cap screws
TAIB-0889
Jul 12, 2021
100000 POWER TRAIN
Service guidance for troubleshooting clutch release wear measuments
TSB190202
Jun 29, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of incorrectly replaced aftertreatment diesel exhaust fluid (DEF) dosing units. Multiple "trouble not found" aftertreatment DEF dosing units have been returned from t
TSB190114
Jun 28, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution to the customer repeatedly experiencing plugged suction side fuel filter prior to required maintenance interval. New filter options offer adequate protection to the f
TSB180009
Jun 28, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution to loose or incorrectly positioned charge air cooler clamps and breached aftertreatment diesel particulate filter (DPF) in Navistars. Extended naturally aspirated eng
TSB210135
Jun 25, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of an issue with the engine ECM calibration code that causes the engine auto-start/stop system to not operate as intended. Incorrect settings in Features and Paramete
TSB210136
Jun 25, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of occurrences of Fault Code 1922, 1921, and 2639 with Long Idle or PTO Operation caused by possible overestimation of soot load by the engine control module.
RIONL21V3999140
Jun 18, 2021
060000 ENGINE AND ENGINE COOLING
Interim owner notification letters sent by Cummins
C2380
Jun 17, 2021
060000 ENGINE AND ENGINE COOLING
This campaign is being issued to recalibrate the Engine Control Module (ECM) on certain MY20 L9 engines in True Series and Series Parallel Hybrid buses. This campaign enables authorized repair locations to calibrate the engine control modul
ATC2443
Jun 15, 2021
060000 ENGINE (PWS)
This Account Team Coverage is being issued to address out of coverage failures as a result of dust ingestion through the air compressor inlet plumbing system on certain X15 CM2350 X114B/X116B engines.
TSB210127
Jun 11, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of misfire fault codes without any audible misfire or performance loss (false misfire). This can be caused by aftermarket exhaust gas pressure sensors not providing e
TSB210063
Jun 11, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin announces the release of a new cup plug to improve oil sealing at the unused oil fill hole near the engine control module. Leaks were identified at the oil fill hole near the ECM caused by sizing issues of th
TSB210117
Jun 9, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin announces updates have been made to Service Manual Procedure 008-018 in Section 8 for evacuating coolant from an engine and injecting coolant into an engine using the coolant replacer kit. This addresses mult
TSB210118
Jun 7, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of excessive oil carryover out of the crankcase breather tube due to he rocker lever cover connection port for the crankcase breather air supply line and the air supp
CMI-052721-A
May 27, 2021
060000 ENGINE AND ENGINE COOLING
This is a representative communication between the Cummins producing plant to affected vehicle manufacturers regarding the potential issue with a misassembled cam idler shaft. The engine plant pursued corrective action to inspect and resolv
TSB200110-052720
May 27, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of Engines operating in a low load and high idle duty cycle may experience elevated lubricating oil consumption and/or fault codes associated with high EGR temperatur
TSB210109-052520
May 25, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin provides an updated maintenance schedule and operator recommendations when operating HDZAA Spec F RV gensets in high ambient temperatures, which may result in no start/rough running or overload symptoms.
CMI-052121-B
May 21, 2021
060000 ENGINE AND ENGINE COOLING
This is a representative communication between the Cummins producing plant to affected vehicle manufacturers regarding the potential issue with fuel leaks caused by incorrectly torqued hose clamps. The engine plant pursued corrective action
TSB210032-052020
May 20, 2021
350000 EQUIPMENT
This Technical Service Bulletin describes the verification and resolution of stuck intake air heater relay and intake air heater damage which may result in Fault Code 383, intake air heater malfunctions and trouble starting the engine. This
TSB190160-051920
May 19, 2021
060000 ENGINE AND ENGINE COOLING
This Technical Service Bulletin describes the verification and resolution of incompatibility between some engine flywheel or flywheel housings and the Eaton Endurant transmission. This incompatibility will preclude correction calibration o