MAINTENANCE MANUAL - Meritor

Prepare Parts for AssemblyPrevent Corrosion on Cleaned Parts1. Apply axle lubricant to cleaned and driedparts that are not damaged and are tobe assembled.2. To store parts, apply a special material thatprevents corrosion to all surfaces. Wrap cleanedparts in a special paper that will protectthe parts from moisture and prevent corrosion.Inspect PartsIt is very important to inspect all parts carefullyand completely before the axle or differential beassembled. Check all parts for wear and replacedamaged parts.1. Inspect the cup, cone, rollers and cage of alltapered roller bearings in the assembly. If anyof the following conditions exist, replace thebearing.• The center of the large-diameter end of therollers is worn level with or below the outersurface. Figure 3.1.• The radius at the large-diameter end of the rollersare worn to a sharp edge. Figure 3.1.• There is a visible roller groove in the cup orcone inner race surfaces. The groove can beseen at the small or large-diameter end ofboth parts. Figure 3.2.• There are deep cracks or breaks in the cup,cone inner race or roller surfaces. Figure 3.2.• There are bright wear marks on the outer surfaceof the roller cage. Figure 3.3.• There is damage on the rollers and on the surfacesof the cup and cone inner race that touchthe rollers. Figure 3.4.• There is damage on the cup and cone innerrace surfaces that touch the rollers. Figure3.5.1 - worn radius2 - worn surface1 - crack2 - wear grovesFigure 3.1Figure 3.21 - WEAR MARKSFigure 3.31 - marks and chemical attack by corrosioncavityFigure 3.414 MAINTENANCE MANUAL