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November 17, 2023 Service bulletin

Service Campaign: Certain Mack GR and PI model trucks built with a D3 Dual PTO, have the incorrect length...

Mack technical service bulletin S3750 202311 for 2023 Mack Granite (GR) and 2023 Mack Pinnacle (Pi/PN).

Bulletin number
S3750 202311
Component
Power train
Summary
Service Campaign: Certain Mack GR and PI model trucks built with a D3 Dual PTO, have the incorrect length PTO mounting studs installed. With the incorrect studs installed there is a possibly of the retaining nuts coming loose and in certain cases result in a loss of gearbox fluid. Follow the instructions in this service campaign to remove and replace the PTO mounting studs with longer ones.

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