REDUCTION PLANETARY GEAR INSPECTION

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Radial Needle Bearing Inspection (in Pinion Gear)

1.  Place the reduction planetary gear with the rear internal gear side pointing downward on a workbench.

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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).

Caution
•  Verify all of the pinion gears.
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•  If there is a malfunction, disassemble the reduction planetary gear and replace the reduction planetary carrier with a new one.
(See REDUCTION PLANETARY GEAR DISASSEMBLY.)
(See REDUCTION PLANETARY GEAR ASSEMBLY.)


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, disassemble the reduction planetary gear and replace the reduction planetary carrier with a new one.
(See REDUCTION PLANETARY GEAR DISASSEMBLY.)
(See REDUCTION PLANETARY GEAR ASSEMBLY.)


Pinion washer wear inspection

1.  Place the reduction planetary gear with the rear internal gear side pointing downward on a workbench.

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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:
0.820 mm {0.0322 in}
•  If it is more than the maximum specification, disassemble the reduction planetary gear and replace the reduction planetary carrier with a new one.
(See REDUCTION PLANETARY GEAR DISASSEMBLY.)
(See REDUCTION PLANETARY GEAR ASSEMBLY.)


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 {1.3816 in}
•  If it is more than the maximum specification, disassemble the reduction planetary gear and replace the reduction planetary carrier with a new one.
(See REDUCTION PLANETARY GEAR DISASSEMBLY.)
(See REDUCTION PLANETARY GEAR ASSEMBLY.)