R200A
PINION GEAR HEIGHT AND PINION BEARING PRELOAD1. Make sure all parts are clean and that the bearings are well lubricated.
2. Assemble the pinion gear bearings into the pinion preload shim selector Tool, J34309.
- Front Pinion Bearing - make sure the J34309-3 front pinion bearing seat is secured tightly against the J34309-2 gauge anvil. Then turn the front pinion bearing pilot, J34309-5, to secure the bearing in its proper position.
- Rear Pinion Bearing - the rear pinion bearing pilot, J3430915, is used to center the rear pinion bearing only. The rear pinion bearing locking seat, J34309-4, is used to lock the bearing to the assembly.
3. Place the pinion preload shim selector Tool, J34309-1, gauge screw assembly with the pinion rear bearing inner cone installed into the final drive housing.
4. Assemble the front pinion bearing inner cone and the J34309-2 gauge anvil together with the J34309-1 gauge screw in the final drive housing. Make sure that the pinion height gauge plate, J34309-16, will turn a full 360 degrees, and tighten the two sections together by hand.
5. Turn the assembly several times to seat the bearings.
6. Measure the turning torque at the end of the J34309-2 gauge anvil using torque wrench J25765A.
Turning torque specification: 1.0 - 1.3 Nm (10 - 13 kg-cm, 8.7 - 11.3 inch lbs.)
7. Place the J34309-1 "R200A" pinion height adapter onto the gauge plate and tighten it by hand.
CAUTION: Make sure all machined surfaces are clean.
PINION BEARING PRELOAD WASHER SELECTION
1 of 2
2 of 2
8. Place the solid pinion bearing spacer, small end first, over the J34309-2 gauge anvil and seat the small end squarely against the tip of the J34309-1 gauge screw in the tool recessed portion.
1 of 2
2 of 2
9. Select the correct thickness of pinion bearing preload adjusting washer using a standard gauge of 3.5 mm (0.138 inch) and your J34309-101 feeler gauge. The exact measure you get with your gauges is the thickness of the adjusting washer required. Select the correct washer.
Drive pinion bearing preload adjusting washer: Refer to Application and ID; Selectable Parts.
10. Set your selected, correct pinion bearing preload adjusting washer aside for use when assembling the pinion gear and bearings into the final drive.
PINION HEIGHT ADJUSTING WASHER SELECTION
11. Now, position the side bearing discs, J25269-4, and arbor firmly into the side bearing bores.
12. Install the side bearing caps and tighten the cap bolts.
Specification: 88 - 98 Nm (9 - 10 kg-m, 65 - 72 ft. lbs.)
13. Select the correct standard pinion height adjusting washer thickness by using a standard gauge of 3.0 mm (0.118 inch) and your J34309-101 feeler gauge. Measure the gap between the J34309-11 "R200A" pinion height adapter and the arbor.
14. Write down your exact total measurement.
15. Correct the pinion height washer size by referring to the "pinion head number".
There are two numbers painted on the pinion gear. The first one refers to the pinion and ring gear as a matched set and should be the same as the number on the ring gear. The second number is the "pinion head height number", and it refers to the ideal pinion height from standard for quietest operation. Use the following chart to determine the correct pinion height washer. Refer to Application and ID; Selectable Parts.
16. Remove the J34309 pinion preload shim selector tool from the final drive housing and disassemble to retrieve the pinion bearings.