REDUCTION PLANETARY GEAR INSPECTION

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Radial Needle Bearing Inspection (in Pinion Gear)

1. Place the reduction planetary gear on a workbench as shown in the figure.

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2. Rotate the pinion gears by hand and verify that there is no malfunction in the radial needle bearing in the pinion gear (rotation sticking).

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Caution

• Verify all of the pinion gears.

• If there is a malfunction, replace the reduction planetary gear with a new one.

Pinion Washer Inspection

Pinion washer visual inspection

1. Visually verify that all of the following washers are between the pinion gear and planetary carrier for one pinion gear.

Caution

• Verify all of the pinion gears.

― Copper washer: 2

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A :Copper washer

• Even if one of the washers is damaged, replace the reduction planetary gear with a new one.

Pinion washer wear inspection

1. Place the reduction planetary gear on a workbench as shown in the figure.

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2. Measure the gap between the pinion washer and planetary carrier.

Caution

• Measure all of the pinion gears.

Note

• Recommended measuring instrument: Thickness gauge

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Maximum

0.82 mm {0.032 in}

• If it is the maximum specification or more, replace the reduction planetary gear with a new one.

Bush Inner Diameter Inspection

1. Measure the inner diameter of the bush shown in the figure.

Note

• When measuring, measure near the center of the bush avoiding the oil groove, and then calculate the average value of the X and Y directions as shown in the figure.

• Recommended measuring instrument: Cylinder gauge or caliper gauge

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Maximum

35.095 mm {1.3817 in}

• If it is the maximum specification or more, replace the reduction planetary gear with a new one.