# Service bulletin 14\-027

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: 10180726
- Published by NHTSA: 2020\-10\-06
- Manufacturer's number: 14\-027
- Manufacturer's date: 2020\-09\-25
- NHTSA component: STRUCTURE; EQUIPMENT

## NHTSA's summary

Information only: In 2020, Peterbilt and Kenworth began using the same M10, M12, M16, and M20 frame fasteners on all vehicles. Torque specifications for these fasteners are different from previous fasteners.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10180726-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10180726-9999.pdf)

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

## Components

Body and frame, Equipment and accessories

## Vehicles listed

- 2020 KENWORTH T170
- 2020 KENWORTH T270
- 2020 KENWORTH T370
- 2020 KENWORTH T440
- 2020 KENWORTH T470
- 2020 KENWORTH T680
- 2020 KENWORTH T800
- 2020 KENWORTH T880
- 2020 KENWORTH W900
- 2020 KENWORTH W990
- 2020 PETERBILT 320
- 2020 PETERBILT 325
- 2020 PETERBILT 330
- 2020 PETERBILT 337
- 2020 PETERBILT 348
- 2020 PETERBILT 365
- 2020 PETERBILT 367
- 2020 PETERBILT 384
- 2020 PETERBILT 386
- 2020 PETERBILT 388
- 2020 PETERBILT 389
- 2020 PETERBILT 520
- 2020 PETERBILT 567
- 2020 PETERBILT 579
- 2020 PETERBILT 587

## Recalls for the same vehicles and component

- [2020551](/recalls/tc/2020551.md), 2020-11-12: Structure

## Other bulletins for the same vehicles and component

- [02\-201](/bulletins/11032879.md), 2026-05-20, Service bulletin: STRUCTURE:BODY. This recently published bulletin has been updated to include inspection procedures to assess if a hood is repairable.
- [02\-201](/bulletins/11032294.md), 2026-05-06, Service bulletin: STRUCTURE:BODY. Model 567 Hood Strut Support Structure \-A new procedure is now available to install hood structure reinforcements on Model 567 and 567 BEV chassis, improving performance and durability.
- [14\-036](/bulletins/11030921.md), 2026-04-07, Other: STRUCTURE:BODY. One\-Piece Aluminum Crossmember Repair \- Repair procedures are available to support the replacement of intermediate or midship one\-piece aluminum crossmembers.
- [04\-022](/bulletins/10243362.md), 2023-10-03, Service bulletin: STRUCTURE. Replacement fuel bezels are available for T680 Next Gen fairings. New bezels have updated attachments to prevent the bezel from becoming loose.
- [02\-174](/bulletins/10241501.md), 2023-09-01, Service bulletin: ENGINE AND ENGINE COOLING; STRUCTURE; EQUIPMENT. Certain W990 hood\-mounted engine air intake covers could loosen and rattle or separate from vehicle. New air intake covers are available with improved retention. Installation of new covers requires hood modification. Procedures are available for replacement of hood\-mounted engine air intake covers.
- [02\-184](/bulletins/10241498.md), 2023-09-01, Service bulletin: STRUCTURE. Certain W990 chassis may have hood hardware that could loosen. Additionally, some chassis may have hood rests that are too rigid causing excessive noise. Hood attaching hardware and hood rests will be replaced as necessary.
- [36\-008](/bulletins/10237152.md), 2023-06-03, Service bulletin: STRUCTURE; ELECTRICAL SYSTEM. Certain 579 chassis are eligible to receive production level Digital Display software, Digital Display, Lane Keep Assist MUX switches, and Kick Panel.
- [02\-178](/bulletins/10235714.md), 2023-05-05, Service bulletin: STRUCTURE; VISIBILITY. Fix As Fail – Certain 579, and New Model 579 chassis that were manufactured with a Bendix forward looking camera system may experience bracket failure causing the bracket and camera to fall from the windshield.
- [32\-019](/bulletins/10232162.md), 2023-03-01, Service bulletin: STRUCTURE; ELECTRICAL SYSTEM. Fix As Fail – Chassis that were manufactured with certain battery cable routing brackets may experience rubbing or chafing of the battery cables.
- [02\-165](/bulletins/10219233.md), 2022-09-06, Service bulletin: STRUCTURE. Fix\-As\-Fail: Forces being applied to the split fender and fairing structure are causing the connection to crack and potentially separate. Reinforcement brackets secure the connection and prevent separation.

JSON: [/v1/bulletins/10180726](/v1/bulletins/10180726)

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