REAR AXLE AND SUSPENSION Dana Spicer and Fabco Rear Axle Alignment No initial drain is required on Dana Spicer axles that are factory filled with an Dana Spicer-approved synthetic lubricant. All Vehicles with Dana Spicer and Fabco Axles: See Preventive Maintenance Schedule on page 5-12. Contact your dealer for approved synthetic lubricant brands. Continual road shock and load stresses may force the rear axles out of alignment. If you detect rapid tire wear on the rear axles, you may have misaligned axles. If you suspect rapid tire wear, have your rear axle alignment checked and adjusted by an authorized dealer.
Petroleum-based lubricants must be drained within the first 5,000 miles (8,000 km) if converting to an approved synthetic lubricant. Dana Spicer Axles with synthetic lubrication and Out Runner Seals: drain, flush, and refill at 500,000 miles (804,000 km). In addition to pre-delivery inspections, suspension alignment should be checked when any one of the following conditions exist: Initial Change: See Preventive Maintenance Schedule on page 5-12 for standard rear axle service intervals. Change mineral-based lubricant in other Dana Spicer and Fabco axle assemblies (new or rebuilt) within the first 3,000 to 5,000 miles (4,800 to 8,000 km). Axle Housing Breather Vent:
Check and clean the axle housing breather vent at each oil level check. Discovery of loose suspension fasteners. (Loose, defined as any torque below the recommended torque value.) 5 Meritor: For petroleum-based axles, use lubricants meeting MIL L2105C/D grade specifications or approved synthetic lubrication. Do not use oil additives. See Meritor Lubrication Maintenance Manual (MM1). Discovery of elongated holes in a suspension component. Bushing replacement. Excessive or abnormal tire wear. (03/17) Y53-6077-1B1 5-135