Leak oil inspection and exclusion of support wheels

Release time:

2024-01-04 09:46

1. During the installation process, parts should be strictly inspected according to technical requirements, kept clean, and protected from impurities entering the installation surface. Especially for the sealing end face of the sealing ring, even tiny dust particles can damage the seal and lead to oil leakage.

2. Sealing sleeves, sealing rubber rings that are aged, deformed, scarred, or cracked must be replaced with new ones.

3. When the spring's elasticity is insufficient, it should be replaced, and its end face can be ground flat if uneven. If the pressure ring is warped, it should be repaired and smoothed, removing sharp edges.

4. If the large and small sealing rings do not fit tightly, they can be re-ground to create a uniform and continuous grinding ring band. Striking the ring end face and disturbing the mating ring is not allowed. The thickness of the rings should be consistent; otherwise, they must be replaced.

5. If the thickness of the rubber ring is insufficient, it is allowed to wrap it with asbestos rope to achieve a tightness of 0.15~0.20 kg per square centimeter.

6. Any bending, out-of-roundness, or neck wear of the wheel axle, as well as wear at the support wheel hub and sealing housing mating areas, must be repaired.

7. When the bearing and sealing ring flat surfaces are worn, a 2~4 mm thick oil-resistant rubber ring can be placed between the sealing sleeve and the hub end face according to the degree of wear. After installation, the sealing sleeve assembly should be able to rotate freely on the hub. Additionally, a washer with an outer diameter of 100 mm, inner diameter of 85 mm, and thickness of 1.5 mm can be placed between the bearing outer ring and the sealing housing support shoulder to compensate for bearing wear. When the height of the sealing sleeve is less than 32 mm and the bearing width is less than 41 mm, new parts should be replaced.

8. The paper gasket on the support wheel should remain intact and undamaged, with appropriate thickness.

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