# Service bulletin KC\-633

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: 10213628
- Published by NHTSA: 2022\-06\-07
- Manufacturer's number: KC\-633
- Manufacturer's date: 2022\-05\-13
- NHTSA component: WHEELS

## NHTSA's summary

Mack Chassis \- Front Hub With Unit\-Bearings \( Unitized Wheel Bearings \), Inspection Information And Guidelines \- Commonly Model Year 2008 And Newer

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10213628-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10213628-9999.pdf)

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

## Components

Wheels

## Vehicles listed

- 2016 to 2017 MACK ANTHEM \(AN\)
- 2018 to 2022 MACK ANTHEM \(AN\)
- MACK ASET
- MACK CH
- MACK CHK SERIES
- 2008 MACK CHN
- MACK CHU
- 2008 to 2018 MACK CHU
- 2008 MACK CHU612
- 2008 MACK CHU613
- 2010 MACK CHU613
- 2010 MACK CHU614
- MACK CL
- 2008 MACK CL
- MACK CLASS 6
- MACK CLASS 7
- MACK CLASS 8
- 2010 to 2012 MACK CMH
- 2010 to 2013 MACK CMM
- MACK CRD SERIES
- MACK CRD112/113
- MACK CRD200
- MACK CRD92/93
- MACK CS 300
- MACK CS 300P
- MACK CS SERIES
- 2008 MACK CT
- 2008 MACK CT713
- 2008 MACK CTP
- MACK CV
- 2008 MACK CV
- MACK CX
- 2008 MACK CXN
- 2008 MACK CXP
- MACK CXU
- 2008 to 2018 MACK CXU
- 2008 MACK CXU612
- 2010 to 2011 MACK CXU612
- 2008 MACK CXU613
- 2010 MACK CXU613
- 2010 MACK CXU613E
- 2010 MACK CXU614
- MACK DM
- MACK DM SERIES
- MACK DM400
- MACK DM600
- MACK DM807
- MACK DM809
- MACK DM811
- MACK DMM SERIES
- MACK E6
- MACK E7
- MACK F SERIES
- MACK FDM
- MACK FREEDOM
- 2018 to 2023 MACK GRANITE \(GR\)
- 2008 to 2016 MACK GRANITE \(GU\)
- 2017 MACK GRANITE \(GU\)
- MACK GU
- 2008 to 2018 MACK GU
- 2008 MACK GU713
- 2010 MACK GU713
- 2010 MACK GU812E
- 2008 MACK GU813
- 2010 MACK GU813
- 2010 MACK GU813E
- 2010 MACK GU814
- MACK J\-TECH
- MACK LE
- 2008 to 2017 MACK LEU
- MACK LR
- 2010 to 2014 MACK LR
- 2015 to 2022 MACK LR
- 2020 to 2023 MACK LR ELECTRIC
- 2011 to 2016 MACK LR6
- MACK M35AK
- MACK M65BX
- MACK MACK
- MACK MB SERIES
- MACK MC400
- MACK MC600
- 2020 to 2023 MACK MD
- MACK MH
- MACK MIDLINER
- MACK MIDR
- MACK MILITARY VEHICLE
- MACK MR
- MACK MR SERIES
- MACK MR400
- MACK MR600
- 2008 to 2018 MACK MRU
- MACK MS SERIES
- MACK MS200P
- MACK MS300
- MACK MS300P
- 2008 to 2016 MACK PINNACLE \(CHU\)
- 2017 to 2022 MACK PINNACLE \(CHU\)
- 2008 to 2016 MACK PINNACLE \(CXU\)
- 2017 to 2022 MACK PINNACLE \(CXU\)
- 2018 to 2022 MACK PINNACLE \(PI/PN\)
- MACK R
- MACK RB
- MACK RD
- MACK RD SERIES
- MACK RM SERIES
- MACK RW SERIES
- MACK SR70
- MACK T200
- MACK T2060A
- MACK T2090L
- MACK T2090LR
- MACK T300
- MACK TD
- 2008 to 2019 MACK TD
- 2010 MACK TD713
- 2008 to 2010 MACK TD714
- 2019 to 2021 MACK TE
- 2012 to 2016 MACK TERRAPRO \(LEU\)
- 2008 to 2016 MACK TERRAPRO \(LEU/MRU\)
- 2017 to 2019 MACK TERRAPRO \(LEU/MRU\)
- 2011 to 2016 MACK TERRAPRO \(MRU\)
- 2017 to 2022 MACK TERRAPRO \(MRU\)
- 2017 to 2018 MACK TERRAPRO \(TE\)
- 2022 MACK TERRAPRO \(TE\)
- 2013 to 2015 MACK TITAN
- 2009 to 2018 MACK TITAN \(TD\)
- MACK U
- MACK V\-MAC
- MACK V\-MAC III
- MACK WL
- MACK WS

## Recalls for the same vehicles and component

- [2021343](/recalls/tc/2021343.md), 2021-06-02: Wheels
- [21V416000](/recalls/nhtsa/21V416000.md), 2021-06-02: WHEELS; WHEELS:HUB

## Other bulletins for the same vehicles and component

- [M\-773\-005a](/bulletins/10235493.md), 2023-05-03, Service bulletin: WHEELS. TSB: Hub Cap, Leaking
- [M\-773\-005](/bulletins/10233522.md), 2023-04-04, Service bulletin: WHEELS. New TSB\- Hub cap leaking
- [S7630](/bulletins/10211022.md), 2022-05-05, Service bulletin: WHEELS; POWER TRAIN:AXLE HUBS. Proprietary Steerable Axle Hubcap Replacement
- [FSB 468 001](/bulletins/10200208.md), 2021-08-09, Service bulletin: WHEELS; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; AIR BAGS; EQUIPMENT. On MACK vehicles built between July 6, 2015 and January 15, 2016 equipped with a MACK CRD 150 carrier, the mounting bolt hole on the driver side of the power divider housing which lines up with the fill plug is drilled through to the fill plug hole. This can create a path for a leak around the threads of the mounting bolt. The remaining five mounting bolt holes are blind. When a leak is found in this area, verify that all six mount bolts around the flange are tight. If any of the mounting bolts are found to be loose, the power divider lockout \(PDLO\) assembly must be removed and the gasket replaced. If all the bolts are tight, the bolt at the 3:00 position should be removed and cleaned along with the mounting hole with a residue free cleaning spray like contact cleaner.
- [SNM21\-005](/bulletins/10195319.md), 2021-06-07, Service bulletin: WHEELS. 1\-Piece Hub Covers
- [KC\-2021](/bulletins/10180411.md), 2020-09-30, Service bulletin: WHEELS:HUBCAP/COVER. Mack Chassis \- Stemco Hubcap Plug Will Not Stay In

JSON: [/v1/bulletins/10213628](/v1/bulletins/10213628)

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