Mack truck: revised fan hub mounting bolt torque
Mack technical service bulletin SB-21-5035 for 2006-2009 Mack Gu and 2006-2008 Mack Chu.
- Bulletin number
- SB-21-5035
- Component
- Engine and engine cooling: cooling system: fan
- Summary
- Mack truck: revised fan hub mounting bolt torque. For this application only, the fan hub mounting stud material properties and length have been changed to 45mm (was 40mm) to ensure full nut engagement. Model years unknown.
Owners of these vehicles have filed 1 complaints in the engine category.
Vehicles covered
VIN decoder
See the problems and recalls for an exact car
Buying a used Mack Gu?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history