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Planetary gear box gear teeth and the surface condition of the tooth to check:

1 High-speed side is detected
First, as the manhole cover and clean surroundings, and then use the wrench to open as the hole cover. View search through the sight hole cover gear, the tooth surface condition (tooth surface fatigue, glue, etc.), color and visual lubricating oil impurity, corrosion, inclusions particulate label, pitting, broken teeth, micro-pitting, tooth contact with strong mark, impact marks. If problems, please take pictures immediately DHI · DCW service department. Now overhaul. After the observation, in accordance with the installation requirements will depend on the new hole cover seal installation.

Part 2 planets detected
First, clean up around the upper part of the gearbox observation hole, and then use a wrench to remove the bolts on the inspection hole. The gear box inside the endoscope depth observation.