Outboard Side Fretting Marks
Fretting Marks
Inboard Side
Corrosion
Figure 7-3: Bearing Outer Cup Condition, S1 (Left) and S2 (Right)
Figure 7-4: Visual Comparison of Grease from Outboard Seals of Bearing Assembly - Note the visible levels grease degradation and variance in quantity of S1 in comparison to unused bearing grease of C2, C2 (Left) and S1 (Right)
S1
Inboard Side
Outboard Side
S2
Indication of overheating on inboard cup raceway Figure 7-5: Cup Raceways Visual Inspection, S1 (Left) and S2 (Right)
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