# Service bulletin 26\-031

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.

- Type: Service bulletin
- NHTSA id: 10143646
- Published by NHTSA: 2018\-08\-13
- Manufacturer's number: 26\-031
- Manufacturer's date: 2018\-07\-06
- NHTSA component: POWER TRAIN

## NHTSA's summary

Non\-Safety Campaign \- Chassis with Eaton Manual or Ultrashift transmissions may experience loosening of the bellhousing bolts.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10143646-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10143646-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline

## Vehicles listed

- 2016 to 2017 PETERBILT 337
- 2016 to 2017 PETERBILT 348
- 2016 to 2017 PETERBILT 365
- 2016 to 2017 PETERBILT 367
- 2016 to 2017 PETERBILT 389
- 2017 PETERBILT 520
- 2016 to 2017 PETERBILT 567
- 2016 to 2017 PETERBILT 579

## Recalls for the same vehicles and component

- [18V092000](/recalls/nhtsa/18V092000.md), 2018-02-02: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION \(PRNDL\)
- [16V066000](/recalls/nhtsa/16V066000.md), 2016-02-05: POWER TRAIN:AXLE ASSEMBLY
- [15V639000](/recalls/nhtsa/15V639000.md), 2015-10-09: POWER TRAIN:MANUAL TRANSMISSION

## Other bulletins for the same vehicles and component

- [T016 / 26\-040](/bulletins/11019217.md), 2025-06-05, Service bulletin: POWER TRAIN. T016: Warranty section updated to include 0.5 hours for test drive. Recommended Repair T016C has been updated from 6.4 hours to 6.9 hours. SRT codes updated in PRWS Claim Coding Table: B25\-17A for 6.9 hours created to replace all other codes. 26\-040: Warranty section updated to include 0.5 hours for test drive. Recommended Repair 26040C has been updated from 6.4 hours to 6.9 hours. SRT codes updated in PRWS Claim Coding Table: B25\-17A for 6.9 hours created to replace all other codes.
- [02\-194](/bulletins/11010896.md), 2024-12-02, Service bulletin: POWER TRAIN. Fix\-As\-Fail The window switch fails prematurely due to excessive amperage flowing through the window switch circuit. A new door harness design has been developed to prevent failures. Fix\-As\-Fail start date is 11/11/2024.
- [7\-700](/bulletins/11009757.md), 2024-11-05, Warranty extension: POWER TRAIN; ENGINE. 7/700 Service Agreement \- Letter Only.
- [23\-005](/bulletins/10225580.md), 2022-11-04, Service bulletin: POWER TRAIN; VEHICLE SPEED CONTROL. Clutch pedal linkage lubrication service interval information is missing from the Service manual for Model 365, 367, and 389 chassis.
- [26\-038](/bulletins/10206084.md), 2022-01-06, Service bulletin: POWER TRAIN. Non\-Safety Campaign: Eaton Endurant transmissions may experience premature Main Drive Gear damage due to clutch housing and main case countershaft bearing bore wear. A Clutch Housing Front Cover Kit will be installed to address the issue.
- [26\-037](/bulletins/10185190.md), 2021-01-06, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY. Fix\-As\-Fail \- Prior versions of Eaton Endurant transmission software may be prone to setting Linear Clutch Actuator \(LCA\) fault codes leading to possible LCA hardware replacement.
- [26\-035](/bulletins/10185189.md), 2021-01-06, Service bulletin: POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Non\-safety campaign: Vehicles equipped with an Eaton Endurant 12 speed transmission may experience transmission service lamp activation, no gear engagement from neutral, and/or DTC 511 FMI 7 or 10 is set. Resolution is to update the transmission software and calibrations.
- [T011](/bulletins/10185187.md), 2021-01-06, Service bulletin: POWER TRAIN. Fix\-As\-Fail \- Prior versions of PACCAR transmission software may be prone to setting Linear Clutch Actuator \(LCA\) fault codes leading to possible LCA hardware replacement.
- [11\-001](/bulletins/10176033.md), 2020-06-02, Service bulletin: POWER TRAIN. Information only: Hendrickson Softek front axle maintenance intervals and requirements.
- [TT8136](/bulletins/10132994.md), 2018-04-16, Service bulletin: POWER TRAIN. Tip for technicians to avoid a conflict with the engine controller when re\-programming the transmission

JSON: [/v1/bulletins/10143646](/v1/bulletins/10143646)

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