Maintenance Steps for RETAINER, BEARING-UPPER STEM

On the NOV TDS-11SA top drive, the "RETAINER, BEARING-UPPER STEM". It serves to secure the bearing and ensure the proper performance and stability of the top drive assembly during drilling operations.Its design and placement are essential for ensuring the stability and efficiency of the top drive system within the overall drilling equipment.

Inspecting the upper bonnet seals

1 Remove the bearing shield, the bearing retainer cap screws, and the bearing retainer;

2 Inspect the bearing isolator, the oil seal, and the retainer o-ring for wear;

3 Replace any worn or damaged parts;

4 Align the shims so that the bearing lube tube bore is not blocked.

 RETAINER,BEARING-UPPER STEM  OEM #30176112   EVERGROW#60352224