Evaluation of elastomer bearings - AH00.10-P-0001-01A

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Fig 1: Identifying Elastomer Bearings

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Topic: Sub-surface corrosion/flaking of the elastomer due to corrosion, on example BR169/245 rear axle center bearing Component OK

Peeling/flaking of the elastomer on the core or on the outer bushing is acceptable up to approx. 30 %.

This does not impede function in any way and should not be considered defective.

Topic: Front axle hydromount

When new

Fig 2: Identifying Front Axle Hydromount

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Component OK

Microfissures up to approx. 30 mm in length which do not lead to fluid loss do not impede function in any way and should not be considered defective.

When subjected to cardanic deviation (full steering lock), these fissures may expand by 3-4 mm.

Fig 3: Identifying Hydromount (Component OK)

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Component defective

Hydromount must be replaced.

Fig 4: Identifying Defective Hydromount

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Topic: Injection molding film

When new

Fig 5: Identifying Injection Molding Film (1 Of 2)

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Fig 6: Identifying Injection Molding Film (2 Of 2)

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Component OK

During the manufacture of bearings, certain production methods or tools may cause a film to be left after injection molding.

This injection molding film can vary in its extent.

It does not represent a technical problem and should not be considered defective.

Fig 7: Identifying Injection Molding

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Topic: Suspension subframe carrier

When new

Fig 8: Identifying Suspension Subframe Carrier

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Component OK

The bearing exhibits slight peeling from the core.

Peeling of up to 50 % from the core does not impede the function in any way.

The lateral crease can be incorrectly identified as peeling or as a fissure.

Fig 9: Identifying Separated Bearing

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Component defective

The bearing has completely separated from the core.

The suspension subframe carrier must be replaced.

Fig 10: Identifying Defective Bearing

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