LINES G-WATER 7L4379 - Caterpillar

Illustration 15 g06276720
Typical example of rollers with numerous small bruises. If bruising is found on more than five rollers, then DO NOT USE PART AGAIN.
Illustration 16 g06276683
Use a seal pick to assess damage to the bearing cage contact area. If the seal pick catches or the abraded area has a rough feel as the seal pick is drug across the surface, then DO NOT USE AGAIN.
Illustration 17 g06276667
Example of a crack found in the corner pocket of the bearing cage.
Use a microscope or a magnifying glass to inspect the corner pockets of the cage structure for crack initiation. If any cracking of the cage is found, DO NOT USE AGAIN.
Illustration 18 g06276675
Example of a crack found in the corner pocket of the bearing cage.
Use a microscope or a magnifying glass to inspect the corner pockets of the cage structure for crack initiation. If any cracking of the cage is found, DO NOT USE AGAIN.
Illustration 19 g06276334
Example of determining the reusability of the cage face using seal pick (B).
(B) Seal PickNote: Drag seal pick (B) against the radial wear or in the direction of the arrows, to obtain the best results.Use seal pick (B) to assess damage on the cage side face. If the seal pick catches or the traversed surface has a rough feel as the seal pick is drug across the surface, then DO NOT USE AGAIN.
Illustration 20 g06276653
Example of corrosion found on a cage face.
If any corrosion is found on the cage, DO NOT USE AGAIN.
Illustration 21 g06276694
Example of marking of the phosphate coating found on a cage face.
If wear passes the seal pick test, then OK USE AGAIN.
Visual Surface Inspection Method
Visual Surface Inspection (VT) is a method for testing components for cracks without damaging the component. Refer to Table 5 for advantages and disadvantages and Table 6 for standards and requirements for these NDT methods.
Table 5
Crack Detection Methods Advantages vs. Disadvantages
Detection Method Advantages Disadvantages
Visual Surface Inspection (VT) - Least Expensive
- Detects most damaging defects.
- Immediate Results
- Minimum part preparation - Limited to surface-only defects.
- Requires inspectors to have broad knowledge of welding and fabrication in addition to Non-Destructive Testing (NDT).
Table 6
Applicable Crack Detection Standards
Detection Method Standard Acceptance
Criteria Minimum
Required
Personnel
Qualifications
Visual Surface Inspection (VT) EN-ISO 5817
AWS D1.1 EN-ISO 5817 - Level B
AWS D1.1 - Table 6.1 EN-ISO 9712
ANSI-ASNT SNT-TC-1A Visual Surface Inspection (VT)
Illustration 22 g06124166
Example of Visual Surface Inspection (VT) Tooling
(A) Flashlight (or adequate light source)
(B) Magnifying Glass
(C) Tape Measure (or other measuring device)
(D) Inspection Mirror
Illustration 23 g06085442
Illustration of view through eye piece of a pocket microscope.
If necessary use a microscope with light for enhanced view and to measure the defects. Refer to Tooling Table 4 for the part numbers.Visual Surface Inspection (VT). VT is often the most cost-effective inspection method and requires little equipment as seen in Illustration22 or optional 23. Personnel performing VT shall either be trained to a company standard or have sufficient experience and knowledge regarding the components being inspected. Personnel performing VT shall take routine eye exams.