# Service bulletin CBR 2218\-6 032026

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: 11030582
- Published by NHTSA: 2026\-04\-02
- Manufacturer's number: CBR 2218\-6 032026
- Manufacturer's date: 2026\-03\-03
- NHTSA component: POWER TRAIN

## NHTSA's summary

CBR \- Parker F3 Hydraulic Pump Troubleshooting.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11030582-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11030582-9999.pdf)

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

## Components

Transmission and driveline

## Vehicles listed

- 2023 to 2026 MACK ANTHEM \(AN\)
- 2023 to 2025 MACK GRANITE \(GR\)
- 2026 MACK GRANITE GR \(4\)
- 2023 to 2025 MACK PINNACLE \(PI/PN\)

## Recalls for the same vehicles and component

- [24V424000](/recalls/nhtsa/24V424000.md), 2024-06-09: POWER TRAIN:AXLE ASSEMBLY; STEERING:LINKAGES:TIE ROD ASSEMBLY

## Other bulletins for the same vehicles and component

- [TSB M\-913\-001 202609](/bulletins/11037730.md), 2026-10-02, Service bulletin: ENGINE; POWER TRAIN. Parker engine\-mounted hydraulic pump service bulletin.
- [GDC26\-001 202604](/bulletins/11032095.md), 2026-05-05, Over\-the\-air update: POWER TRAIN. GDC \- Transmission Oil Level Sensor
- [CBR 2573\-1 202604](/bulletins/11032092.md), 2026-05-05, Service bulletin: POWER TRAIN. CBR \- Mack Chassis \- Through Shaft Bearing Retainer Breakage On Mack Carriers.
- [CBR 2362\-3 202604](/bulletins/11032086.md), 2026-05-04, Service bulletin: POWER TRAIN. CBR \- Mack Carrier Nut Adhesive Change.
- [S4579 092025](/bulletins/11023461.md), 2025-10-01, Service campaign: UNKNOWN OR OTHER; POWER TRAIN. Mack Trucks has identified that certain truck models may have been assembled with incorrect center bearing mounting hardware and could have been torqued incorrectly. Improper torque can increase the risk of hardware failure. To address this issue, please follow the instructions in this document to replace and correctly torque the center bearing and center bearing mounting bracket hardware.
- [S4574 072025](/bulletins/11021342.md), 2025-08-04, Service campaign: POWER TRAIN. SC \- Mack Trucks has identified that certain truck models may have been assembled with incorrectly torqued interaxle prop shaft U\-joint hardware.
- [S4558 202506](/bulletins/11020159.md), 2025-07-03, Service campaign: POWER TRAIN. Mack trucks has determined that certain model year 2021\-2024 PI models built with 4.19 rear axle ratios could experience elevated axle oil temps under high road speeds. To correct this issue the 4.19 ratio carriers need to be swapped to 3.79 ratio carriers. Follow the instructions below to replace both carriers with new ones.
- [CBR 2464\-1 202505](/bulletins/11018816.md), 2025-06-02, Service bulletin: POWER TRAIN. Mack Chassis \- Rear Axle Overheat
- [S4088 202409](/bulletins/11008394.md), 2024-10-04, Service campaign: POWER TRAIN. Service Campaign: Interaxle Driveline Torque
- [CBR\-2387 202409](/bulletins/11008382.md), 2024-10-04, Service bulletin: POWER TRAIN. CBR: Vehicles Equipped With A Lift Axle \- Wheel Speed Fault Code SPN 793, SPN 794 Set When Axle Is Up

JSON: [/v1/bulletins/11030582](/v1/bulletins/11030582)

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