SEAL-O-RING 5382192 - Caterpillar

Illustration 78 g02266413
Crack in gear side face. Crack does not extend to the bore or the root area.
Use Again
Illustration 79 g02266415
Crack in the gear side face. Crack extends to bore.
Do Not Use Again
Illustration 80 g02266459
Grinder cracks in gear side face. Cracks extend to both bore and root area.
Do Not Use AgainOther Failures
Bolt Hole Fretting
Fretting around bolt holes on bolt-on gears is normal and the gears can be used again.
Illustration 81 g02266474
Fretting around bolt holes.
Use Again - after polishing any raised areas around the bolt holes with a sharpening stone.Tooth Tip Chipping
Tooth tip chipping is caused by sudden impact loads. Chipping is especially noticeable on pinions with a narrow land width. Generally, gears with tooth tip chipping cannot be reused again, even in the reverse direction. However, gears with VERY LIGHT tooth tip chipping can be used again after polishing the tip with a sharpening stone and oil.
Illustration 82 g02266495
Tooth tip chipping
Do Not Use Again
Illustration 83 g02266498
Tooth tip chipping.
Do Not Use Again
Illustration 84 g02266793
Light tooth tip chipping
Use Again - after polishing the tip with a sharpening stone and oil.Tooth End Chipping
Tooth end chipping is caused by misalignment or contact with foreign objects. Whenever a gear has a tooth end chipping, always inspect for cracks. Gears with tooth end chipping caused by misalignment can be used again in the reverse direction if the chipping has not affected both sides of the tooth, and there are no cracks or other problems with the tooth. Refer to the section “Uneven Contact (Misalignment)” for more information.Gears with tooth end chipping caused by foreign objects can be used again if no cracks are found.
Illustration 85 g02266896
Tooth end chipping caused by misalignment. Both of the tooth ends have been affected.
Do Not Use Again
Illustration 86 g02267037
Tooth end chipping caused by misalignment. Only one side of the teeth has been affected.
Use Again - if no cracks are found after polishing the sharp edges with a sharpening stone and oil.
Illustration 87 g02267053
Tooth end chipping caused by contact with a foreign object.
Do Not Use Again - teeth are cracked and chipped on the tooth faceHigh Temperature
Blue or black spots on the teeth are indications of high temperature. These gears can be used again if the gear is still “file hard” and there is no other damage. There will be no drag when a file is slid across the surface of the tooth if the gear is file hard. Only gears that are carburized and hardened such as input pinions, cluster gears, and cluster pinions can be tested with a file. Induction hardened gears like bull gears cannot be tested with a file. If a bull gear has indications of high temperature, do not use again.
Illustration 88 g02267074
Input pinion with indication of high temperature.
Use Again - if there is no drag felt when a file slides across the teeth.