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.
M1492
Service Bulletin/Repair Instructions
SERVICE BULLETIN M1492: 2017 - 2019 TOURING - MILWAUKEE EIGHT - INNER PRIMARY VENT. PURPOSE. Revision. Harley-Davidson has learned that a small percentage of dealers and customers are finding low transmission oil levels and high primary oil levels during normal maintenance intervals. This could indicate that oil is transferring from the transmission case to the primary housing through the transmission mainshaft. A inner primary vent service kit (Part No. 26500027) is now available to address this issue. The kit allows the primary to breath and prevents excessive pressure.
M1510
Service Bulletin/Repair Instructions
SERVICE BULLETIN M1510: MILWAUKEE-EIGHT ENGINE - NEW OIL FILTER. REVISION. PURPOSE: To inform dealers of an improved oil filter for the Milwaukee-Eight® (MKE-8) engine. The new oil filter uses the same synthetic 5-micron media as the current filter, however, the new oil filter effective media surface area was increased by 25%. The increased media supports the higher oil flow rate of MKE-8 engines. Fitment, clearance and performance testing has only been performed on MKE-8 vehicles. All Twin Cam vehicles continue to use the current oil filter.
M1499
Service Bulletin/Repair Instructions
SERVICE BULLETIN M1499: 2020 MODELS EQUIPPED WITH TCU - REFLASH AND ENABLE TCU. Revision. PURPOSE: This bulletin informs dealers of the procedure to verify the version of and, if necessary, reflash the TCU (Telematic Control Unit) software during PDI (Predelivery Inspection). The bulletin then directs dealers to enable the TCU in markets where it can be enabled.
M1509
Service Bulletin/Repair Instructions
SERVICE BULLETIN M1509: MILWAUKEE-EIGHT CYLINDER FLANGE NUT USAGE. To Inform dealers of a service manual change. This change affects the flange nut attaching the cylinder/cylinder head assembly to the cylinder stud in all MKE-8 (Milwaukee-Eight®) engines. The flange nut is one-time use and is replaced after removing. An additional change is the lubrication of the flange nut. Verify that only the bottom of the flange nut receives lubrication. Do not allow lubrication on the cylinder stud or on the internal threads of the flange nut. Motorcycles Affected: Vehicles with the MKE-8 engine From 2017 - 2020.
PAB1091
Service Bulletin/Repair Instructions
GENUINE MOTOR PARTS AND MOTOR ACCESSORIES BULLETIN PAB1091: 2014-LATER - BOOM! BOX GTS - FITMENT UPDATE. PURPOSE: Revision. To inform dealers of the upcoming software change expanding the Boom!⢠Box GTS radio fitment from 2019-later Touring to 2014-later Touring. GTS radios with the revised part numbers will be capable of being installed on 2014-later vehicles. Instructions covering the required parts and installation process will be included. Updated Markets Affected for clarification of markets (North America Market Only). Genuine Harley-Davidson vs. Aftermarket and parts will be available on November 29, 2019.
TT430
Service Bulletin/Repair Instructions
TECHNICAL TIP TT430: TWIN-COOLED SYSTEM DIAGNOSTICS. PURPOSE: Revision. Updated Basic Operation, Cooling System Pressure Cap, Loss of Coolant from Right Fairing Lower Overflow Hose for all Twin-Cooled Touring and Trike models with symptoms relating to cooling system issues.
TT466
Service Bulletin/Repair Instructions
TECHNICAL TIP TT466: UPDATED OIL PUMP FOR MILWAUKEE-EIGHT ENGINES. PURPOSE: Revision. To notify dealers that a new oil pump was put into production on some late 2019 and all 2020 Milwaukee-Eight® engines, all models. The new oil pumps are retrofittable to all previous years and models that have the Milwaukee-Eight engine. If replacing the oil pump on 2017 - 2019 vehicle with a Milwaukee-Eight engine and pump should only be install as a complete unit. It is important to note that the new oil pumps, or their internal components, are not compatible with old oil pump versions.
M1450
Service Bulletin/Repair Instructions
SERVICE BULLETIN M1450: MILWAUKEE-EIGHT EQUIPPED VEHICLES - LOSS OF POWER OR HIGH ENGINE BRAKING. PURPOSE: REVISION. 2017 - 2019 model motorcycles equipped with a Milwaukee-Eight? engine can experience a condition known as sumping during extended periods at high rpm or under heavy engine load. Sumping is when an excessive amount of oil is suspended in the engine crankcase and the flywheel must travel through the oil, resulting in loss of power or a high degree of engine braking and potential engine component damage with extended use under these conditions. This bulletin provides the diagnostic procedure for determining if sumping is occurring.
1HD-L4F5Q-11
Service Bulletin/Repair Instructions
SERVICE BULLETIN M1436: 2017 ENGINE IDLE TEMPERATURE MANAGEMENT SYSTEM (EITMS). REVISION - Updated Title. Purpose: Inform dealers of the operational details of the EITMS (Engine idle temperature management system) used on all 2017 Touring, Police, Trike and CVO Touring vehicles. Additionally this bulletin will bring awareness to a calibration change that was made to this same population of vehicles produced after early October 2016.
1HDJ2L2S04
Service Bulletin/Repair Instructions
SERVICE BULLETIN M1468: 2017 - 2018 TOURING AND TRIKE - CLUTCH SWITCH UPDATE. This bulletin informs the dealer network that a revised LHCM (Left hand control module) is available. The new parts have a stronger spring in the clutch switch to improve reliability. New clutch levers are also available in conjunction with the new LHCM. The new clutch levers have an improved ramp design that interfaces with the switch. The new levers can be identified by a machined dot. Resolves Issue: Touring models will not start in gear with the clutch lever pulled in. Trike models will not start in gear with brake applied and clutch pulled in.
1HDN6H3P04
Service Bulletin/Repair Instructions
SERVICE BULLETIN M1439: 2017 AND 2018 DRIVE BELT TENSION. This describes the new belt tension specification to use for belt tension before the first service interval. Belt tension is initially set to allow for early break-in of the belt and sprockets. The break-in occurs in the first few hundred miles and even to some degree in post assembly audit. Harley-Davidson has provided an acceptable range of belt tension variation at PDI based on testing and evaluation.
1HDB6S5W11
Service Bulletin/Repair Instructions
TECH ARTICLE TTA0016: 2014 and Later Touring Steering Head Bearing Adjustment. Revised. Issue: Steering head bearings on 2014 and later Touring, CVO Touring and Police Touring motorcycles which may not have been adjusted correctly using the service manual procedure at dealerships. Resolution: NOTE - Never make adjustments by feel. Always follow the process in the appropriate service manual. When submitting warranty claim information for steer head bearing adjustment, Harley-Davidson requires the following data: 1) What was the original steering head bearing swing back result found on the vehicle? (see service manual), 2) What was the swing back result after the steering head bearing adjustment was performed? (see service manual).
1HDS3A5B11
Service Bulletin/Repair Instructions
TECH TIP CRUISE CONTROL AND PTT BUTTON CONFIGURATION USING DIGITAL TECHNICIAN II. Issue: Some CB (Citizens band) radio equipped Touring model customers have expressed concern about manipulating the PTT (Push to talk) button on the right hand control, while operating the throttle control. Symptom: Rider's comfort. Resolution: To address this concern, a new feature is included in DIGITAL TECHNICIAN II (PART NUMBER: HD-48650) software version 11.0 that allows the configuration of the PTT and cruise control buttons to be interchanged. This will allow CB radio customers the option to move PTT function to the LHCM (Left hand control module) and the cruise control function to the RHCM (Right hand control module). If a customer requests this change in configuration, the kit in Table 1 must be installed. These buttons are gray to visually differentiate them from the OE (Original equipment) buttons.
1HD-H7U3Z-03
Service Bulletin/Repair Instructions
Phone Campaign. MY17 Touring Clutch Secondary Actuator Part Return from dealer for inspection prior to retail for verification of revised actuators.
1HD-L5P3E-03
Service Bulletin/Repair Instructions
Service Bulletin M1439: 2017 DRIVE BELT TENSION. This Service Bulletin describes the new belt tension specification to use for belt tension before the first service interval. Belt tension is initially set to allow for early break-in of the belt and sprockets. The break-in occurs in the first few hundred miles and even to some degree in post assembly audit. Harley-Davidson has provided an acceptable range of belt tension variation at PDI based on testing and evaluation.
1HD-M8G2K-03
Service Bulletin/Repair Instructions
Tech Tips, TT459: TIRE PRESSURE MONITORING SYSTEM (TPMS). Both dealers and customers have raised questions regarding TPMS and how the system works. Additionally there have been warranty claims for tire pressure sensors that upon return have been tested as ?no trouble found?. The intention of this Tech Tip is to answer some of those questions, and reduce replacement of functioning tire pressure sensors.
1HD-F8M6H-03
Service Bulletin/Repair Instructions
Tech Article, TA0015: MY17 ABS Historic DTC Codes. ABS codes U0001 and U0003 showing up in Digital Technician II under the historic codes section. Harley Davidson has been able to trace these codes back to the TechLink module being connected to the vehicle while the ignition was already turned on. If the TechLink is properly connected prior to turning on the ignition switch, these codes should not appear. If these codes appear on the vehicle, clear the codes and make sure to use the proper connection steps for TechLink.
1HD-U9E8G-02
Service Bulletin/Repair Instructions
PHONE CAMPAIGN: REQUEST FOR INFORMATION FROM OUR DEALERS REGARDING INCREASED WARRANTY CLAIMS FOR NEW SPEAKERS IN CVO BIKES
1HD-Y7X3E-01
Service Bulletin/Repair Instructions
HARLEY-DAVIDSON HAS DETERMINED THAT A LIMITED NUMBER OF RECENTLY PRODUCED FL TOURING AND TRIKE MODELS INTENDED FOR CERTAIN INTERNATIONAL MARKETS, MAY HAVE BEEN BUILT WITH A FUEL PUMP ASSEMBLY CONTAINING AN INCORRECT FUEL PUMP MOTOR.