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.
32-025
Service Bulletin/Repair Instructions
Info Only Unnecessary starter replacements can result from customer complaints regarding engine starting issues. A new Starter Troubleshooting Guide has been created to provide a comprehensive list of starting system checks, which should reduce unnecessary starter replacements and associated warranty claims. Engine starting system warranty claims now require a completed Starter Checklist, a Battery Pack Midtronics Report, and a Cable Drop Midtronics Report. Claims filed without these documents may be denied.
13-060
Service Bulletin/Repair Instructions
The service information for Bendix Air Dryer maintenance is being updated to include new procedures.
01-085
Service Bulletin/Repair Instructions
Info Only â Certain 520 model chassis built between 2014 and 2021, and equipped with the Red Dot HVAC system, may have service port spacing which will not allow the connection of a pressure gauge to both the high and low side service ports simultaneously. A specific tool is available from the supplier that will allow a technician to bypass this design issue.
43-071
Service Bulletin/Repair Instructions
Fix-As-Fail â Due to undersupply issues, only a limited supply of Diesel Exhaust Fluid (DEF) sensors are available. As a temporary solution, after PACCAR confirms a DEF sensor is not available, a temporary software update will allow a vehicle to continue operation with a failed DEF sensor by disabling the DEF sensor diagnostics.
E271
Service Bulletin/Repair Instructions
An engine software update is required to resolve OBD system readiness, DEF doser diagnostics, and otherOBD system software related issues.
34-074
Service Bulletin/Repair Instructions
The current chassis harness connector contains a wire that is no longer necessary with the latest electrical architecture. The presence of the wire could result in a false fault code.
02-160
Service Bulletin/Repair Instructions
Information Only â Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
13-054
Service Bulletin/Repair Instructions
Fix-As-Fail - Bendix New-Gen Lightweight Steer Axle Drum Brake Spider Cracking
43-067
Service Bulletin/Repair Instructions
Fix as Fail: For all conventional models, except 387/587, equipped with Side-of-Cab (âSOCâ) exhaust and built from 03/6/2006 to 1/20/2020, the clamps that secure the SOC exhaust stacks may not be tightened properly. This may allow the exhaust stack to rotate and contact the cab or sleeper.
32-015
Service Bulletin/Repair Instructions
Information Only: This bulletin provides dealers with a battery warranty quick reference guide to ensure the appropriate tests for battery warranty are performed in order to prevent battery warranty claims filed with incorrect or incomplete information.
11-001
Service Bulletin/Repair Instructions
Information only: Hendrickson Softek front axle maintenance intervals and requirements.
18PBB
Service Bulletin/Repair Instructions
Safety Recall Bulletin: Updated with permanent repair path for phase 1 vehicles. The Tractor ABS Lamp May Not Illuminate When ABS Controller Loses Battery and/or Ignition Power. NHTSA recall number is 18V368. Non compliance to FMVSS and CMVSS 121 and 136. Resolution is to Reflash software.
43-066
Service Bulletin/Repair Instructions
DEF tank covers may become loose and potentially crack on vehicles built before October 2019 with DEF tank part number M86-6221-003**(TANK-DEF MEDIUM ASSY) and M86-6222-003**(TANK-DEF LARGE, ASSY). Resolution is to resolve the vibration on the tank cover by adding bottom tank washers.
20PBB
Service Bulletin/Repair Instructions
Safety Recall: Peterbilt has decided that certain Model 320 and 520 trucks built between 2/20/2015 and 7/16/2019 may have been built without a quick release valve. The absence of this valve could affect rear brake timing on certain vehicles equipped with a tri-drive or liftable tag axle and Dual Seated or Right Hand Stand-Up steering configurations. Resolutoin is to inspect for a quick release valve installed, and if there is not one, to install a quick release valve.
32-016
Service Bulletin/Repair Instructions
Information Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment damage.
34-085
Service Bulletin/Repair Instructions
Information Only â Vehicles may have the connector seals on the wheel speed sensor incorrectly installed, which may lead to water intrusion and corrosion in some vehicles.
03-071
Service Bulletin/Repair Instructions
Information Only - Vehicles built with NAMUX software from 2013 to present may experience accuracy issues with the tachometer. The issue can be temporarily resolved using any one of the included procedures.
02-153
Service Bulletin/Repair Instructions
Information only: Some model 320 and 520 vehicles built before 3/11/2019 may experience loss or loosening of doghouse insulation. Reference the procedure in the attachment section to properly remove and replace the insulation.
01-075
Service Bulletin/Repair Instructions
Information Only: This bulletin provides guidance for repairing an air-conditioning system after internal failure of the A/C compressor.
02-154
Service Bulletin/Repair Instructions
Fix as Fail: Some model 520 right hand stand up vehicles built before 07/16/19 are experiencing washer fluid leakage from the windshield reservoir through the vent line. Resolution is to replace the current washer fluid line with a longer length.
TIB43-062
Service Bulletin/Repair Instructions
Information Only â This bulletin provides information about the California Air Resources Board (CARB) Periodic Smoke Inspection Program (PSIP) and Heavy Duty Vehicle Inspection Program (HDVIP).
42-056
Service Bulletin/Repair Instructions
Fix-As-Fail -ÃÂ Composite fittings used in the cooling system may crack, resulting in coolant leaks. Brass fittings are available to replace the composite fittings.
42-058
Service Bulletin/Repair Instructions
Fix-As-Fail: Two separate causes have been identified as root cause of intermittent low coolant indicator illumination.
FRN215-3Custltr
Service Bulletin/Repair Instructions
Sample Customer Letter - 215-3 Sleeper Heater Core O-Ring Leaking