RING GEAR AND DIFFERENTIAL INSPECTION [FW6A-EL/FW6AX-EL]
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Taper Roller Bearing Inspection
1. Place the ring gear and differential with the ring gear side pointing upward on a workbench.
2. Assemble the bearing race to the ring gear and differential.
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Note
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• Bearing race size: Outer diameter approx. 80 mm {3.1 in}
3. With a load applied by hand to the bearing race, rotate the bearing race and verify that there is no malfunction in the taper roller bearing (rotation sticking).
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• If there is a malfunction, disassemble the ring gear and differential and replace the taper roller bearing with a new one.
4. Remove the bearing race.
5. Place the ring gear and differential with the ring gear side pointing downward on a workbench.
6. Assemble the bearing race to the ring gear and differential.
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Note
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• Bearing race size: Outer diameter approx. 80 mm {3.1 in} (2WD)
• Bearing race size: Outer diameter approx. 90 mm {3.5 in} (4WD)
7. With a load applied by hand to the bearing race, rotate the bearing race and verify that there is no malfunction in the taper roller bearing (rotation sticking).
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• If there is a malfunction, disassemble the ring gear and differential and replace the taper roller bearing with a new one.
8. Remove the bearing race.
Differential Journal Inspection
1. Measure the inner diameter of the journal (front side) shown in the figure.
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Note
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• When measuring, measure near the center of the journal 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
• The inner diameter of the journal (front side) differs depending on the vehicle model.
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Maximum:
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Type A: 30.048 mm {1.1830 in}
Type B: 33.545 mm {1.3207 in}
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• If it is more than the maximum specification, disassemble the ring gear and differential and replace the differential gear case with a new one.
2. Measure the inner diameter of the journal (rear side) shown in the figure.
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Note
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• When measuring, measure near the center of the journal 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
• The inner diameter of the journal (rear side) differs depending on the vehicle model.
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Maximum:
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Type A: 30.048 mm {1.1830 in}
Type B: 33.545 mm {1.3207 in}
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• If it is more than the maximum specification, disassemble the ring gear and differential and replace the differential gear case with a new one.
Differential Backlash Inspection
1. Perform the following the inspection and measurement/adjustment in the order and replace a malfunctioning part with a new one.
- (1) Drive shaft journal inspection (See DRIVE SHAFT JOURNAL INSPECTION.)
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- (2) Differential backlash measurement/adjustment (See DIFFERENTIAL BACKLASH MEASUREMENT/ADJUSTMENT [FW6A-EL/FW6AX-EL].)
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