Rear Axle - Evolution: Adjustments Mitsubishi Lancer IX

>> D << DRIVE PINION HEIGHT ADJUSTMENT

Adjust the drive pinion height by the following procedures

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1. Apply multipurpose grease to the washer of special tool MB990903.
2. Install special tools MB990903(MB990901) and MB991366(MB991378), drive pinion front and rear bearing inner races to the differential carrier as shown in the illustration. CAUTION: There should be no gear oil adhered to the bearing.
3. Tighten the nut of special tool MB990903 a little at a time, while measuring the turning torque of the drive pinion. Then confirm that the turning torque (without the drive pinion oil seal) is at the standard value. Standard value: NOTE: Because the special tool cannot be turned one turn, turn it several times within the range that it can be turned; then, after fitting to the bearing, measure the turning torque.
4. Clean the side bearing seat of the differential carrier and bearing caps.
5. Place special tool MB990392 in the side bearing seat of the differential carrier, and position the notch as shown in the illustration. Then install the bearing caps.
6. Use a feeler gauge to measure the clearance (A) between special tools MB990392 and MB990836.
7. Remove the bearing caps and special tools MB990392 and MB990836.
8. Use a micrometer to measure the shown dimensions (B, C) of special tools MB990392 and MB990836.
9. Install the bearing cap, and then use a cylinder gauge to measure the inside diameter (D) of the bearing cap.
10. Calculate thickness (F) of the required drive pinion rear shim by the following formula. Select a shim which most closely matches this thickness. F = A + B + C - 1/2D - 86.00 mm (3.385 inches)
11. If the selected drive pinion rear shim(s) to the drive pinion, and press-fit the drive pinion rear bearing inner race by using special tool MB990728.

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>> H << BEARING CAP INSTALLATION/FINAL DRIVE GEAR BACKLASH ADJUSTMENT

Adjust the final drive gear backlash by the following procedure

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1. Assemble the differential case with the side bearing outer race to the differential carrier.
2. Press the differential case to one side to measure the clearance of the side bearing outer race and the differential carrier.
3. Select two pairs of side bearing spacers. Determine the thickness by adding 1/2 of the clearance to the pre-load 0.05 mm (0.002 inch).
4. Remove the side bearing by using special tools MB990810 and MB990811. NOTE: Hook the claws of special tool MB990810 with the side bearing inner race by using the notches (two areas) of the limited slip differential case side.
5. Assemble the selected side bearing spacers to each side.
6. Use special tool MB990728 to press-fit the side bearing inner race into the limited slip differential case. After installing the outer race, assemble the limited slip differential case to the differential carrier.
7. Align the mating marks of differential carrier and the bearing cap with each other and tighten the bearing cap attaching bolts to the specified torque. Tightening torque: 37 +/- 2 N.m (27 +/- 2 ft-lb)
8. Measure the final drive gear backlash at four points or more on the circumference of the drive gear. Standard value: 0.11 - 0.16 mm (0.004 - 0.006 inch)
9. If the backlash is not within the standard value, move the side bearing spacer as shown in the illustration to adjust the backlash. NOTE: The increment of side bearing spacer must be the same as the decreased amount.
10. Inspect the tooth condition at the final drive gear and replace if required. (Refer to «DISASSEMBLY»(ref-183221-S22752641612005081200000) ).
11. Measure the drive gear runout. Limit: 0.05 mm (0.002 inch)
12. If drive gear runout exceeds the limit, remove the differential case and then the drive gears, moving them to different positions and reinstall them.
13. If adjustment is not possible, replace the differential case or drive gear and drive pinion as a set.

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Required Special Tools

1. MB990989: Base
2. MB990990: Tool A