SIB JD 21-354
Service Bulletin/Repair Instructions
Service Information Bulletin regarding Steer Axle Alignment on Heavy Duty Wrecker and Rotator Chassis. This communication to Jerr-Dan distributors was a reminder to follow the heavy-duty chassis manufacturer's instructions regarding the need for periodic inspection and tightening of suspension / axle components. This covers any Heavy-Duty Jerr-Dan Wreckers and Rotators (25/35/50T Wreckers, and 50T Rotator).