# Service bulletin WSTCAE177\-2020

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: 10193768
- Published by NHTSA: 2021\-05\-18
- Manufacturer's number: WSTCAE177\-2020
- Manufacturer's date: 2020\-08\-26
- NHTSA component: EQUIPMENT; POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY

## NHTSA's summary

Meritor Transfer Case Updates

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10193768-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10193768-9999.pdf)

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

## Components

Equipment and accessories, Transmission and driveline

## Vehicles listed

- 2010 to 2021 WESTERN STAR 4700

## Recalls for the same vehicles and component

- [22V338000](/recalls/nhtsa/22V338000.md), 2022-05-16: EQUIPMENT:OTHER:LABELS
- [21V209000](/recalls/nhtsa/21V209000.md), 2021-03-24: POWER TRAIN:CLUTCH ASSEMBLY
- [2020488](/recalls/tc/2020488.md), 2020-10-16: Powertrain
- [20V642000](/recalls/nhtsa/20V642000.md), 2020-10-16: POWER TRAIN:CLUTCH ASSEMBLY
- [20V634000](/recalls/nhtsa/20V634000.md), 2020-10-14: EQUIPMENT:OTHER:LABELS; TIRES
- [20V211000](/recalls/nhtsa/20V211000.md), 2020-04-10: EQUIPMENT:OTHER:LABELS
- [2018714](/recalls/tc/2018714.md), 2018-12-19: Powertrain
- [18V903000](/recalls/nhtsa/18V903000.md), 2018-12-19: POWER TRAIN:CLUTCH ASSEMBLY
- [2017636](/recalls/tc/2017636.md), 2017-12-18: Accessories
- [17V810000](/recalls/nhtsa/17V810000.md), 2017-12-15: EQUIPMENT

## Other bulletins for the same vehicles and component

- [TSB26\-008\-WST](/bulletins/11017553.md), 2025-05-02, Service bulletin: POWER TRAIN. Service Solution for DT12 Oil Plug Ports
- [CXA 06\_24\_Clutch Bolts](/bulletins/11003924.md), 2024-07-09, Other: POWER TRAIN. CX Advocate communication for clutch bolts
- [TSB35\-023\-WST](/bulletins/11000978.md), 2024-06-05, Service bulletin: POWER TRAIN. Technical Service Bulletin for New Final Drive Over Heat Diagnostic
- [SBW54\-074](/bulletins/10207520.md), 2022-02-05, Service bulletin: EQUIPMENT. Revised Western Star Service Bulletin for Pana\-Pacific 540 Radio Controls Not Operating Normally. Minor note: added an update of document previously submitted. The related VMRS codes are added
- [SBW41\-002](/bulletins/10207507.md), 2022-02-05, Service bulletin: POWER TRAIN. Revised Western Star Service Bulletin for Drive Line Vibration. Minor note: added an update of document previously submitted. The related VMRS codes are added
- [CALWS32\-001](/bulletins/10194469.md), 2021-05-25, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES; SUSPENSION; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Customer Advisory Letter on Transverse Track Rod Tower Bracket
- [WSTCAE180\-2020](/bulletins/10193771.md), 2021-05-18, Service bulletin: EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. Portland Truck Plant Paint Changes
- [WSTCAE176\-2020](/bulletins/10193767.md), 2021-05-18, Service bulletin: TRAILER HITCHES; EQUIPMENT; STRUCTURE:FRAME AND MEMBERS. Removable Front Tow Hook Changes
- [WSTCAE172\-2020](/bulletins/10193763.md), 2021-05-18, Service bulletin: EQUIPMENT; VISIBILITY. Tractor Reflective Devices
- [WSTCAE171\-2019](/bulletins/10193762.md), 2021-05-18, Service bulletin: EQUIPMENT; FUEL SYSTEM, OTHER; POWER TRAIN. Allison FuelSense 2.0

JSON: [/v1/bulletins/10193768](/v1/bulletins/10193768)

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