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9. Using a micrometer, measure the thickness of the J 34673 . See Special Tools. 10. Subtract the thickness of the J 34673 , measured in step 9, from the measurement determined in step 8. See Special Tools. This is the shim thickness for the front axle without having any axle shaft endplay. 11. The correct shim size will be one size smaller than the figure obtained in the previous step. Note the following examples: If the figure obtained in step 8 was 3.53 mm (0.139 in), use a 3.30 mm (0.130 in) shim. If the figure obtained in step 8 was 3.30 mm (0.130 in), use a 3.05 mm (0.120 in) shim. Alternate Adjustment Method 1. Install the original shim to the shaft. Use the chassis grease in order to hold the shim in place. 2. Install the inner axle housing assembly to the differential carrier case. Do not use sealer at this time. 3. Install the bolts. Tighten: Tighten the bolts to 40 N.m (30 lb ft). IMPORTANT: Use this method only if the proper tools for calculating the shim size are unavailable. NOTE: Refer to Fastener Notice .
2008 Chevrolet Silverado 1500 2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 137: Measuring Shaft End 4. Measure the shaft end play using the following procedure: 1. Install the J 8001 or the equivalent on the axle tube end. The plunger of the indicator must be at a right angle to the axle flange. 2. Move the shaft back and forth and read the end play. The correct end play is 0.03-0.51 mm (0.001-0.020 in). 3. If the end play is incorrect, install a thicker or thinner shim as needed in order to bring the end play into the specified range.
2008 Chevrolet Silverado 1500 2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
DIFFERENTIAL CARRIER ASSEMBLY DISASSEMBLE (9.25 INCH AXLE) Tools Required J 22912-B Split-Plate Bearing Puller. See Special Tools. J 2619-01 Slide Hammer J 29369-2 Bushing and Bearing Remover (2-3 in). See Special Tools. J 33791 Carrier Bushing Remover/Installer. See Special Tools. J 34011 Pilot Bearing Remover. See Special Tools. J 36599-A Side Bearing Nut Wrench. See Special Tools. J 36615 Side Bearing Nut Wrench. See Special Tools. J 36616 Axle Mount Bushing Remover/Installer. See Special Tools. J 45754 Pinion Bearing Race Remover/Installer - 9. See Special Tools.25 inch Axle J 45765 Pinion Remover. See Special Tools. J 8614-01 Flange and Pulley Holding Tool. See Special Tools. Inspection Procedure Perform the following before disassembling the axle: 1. Remove the fill plug from the axle. 2. Remove the drain plug from the axle. 3. Drain the axle lubricant. 4. Inspect the oil and the case for metal chips. Determine the source of the metal chips, such as a broken gear or bearing cage. 5. Check the ring gear backlash. Refer to Backlash Inspection and Adjustment. This information can be used in order to determine the cause of the axle problem. The Determine the cause of the axle problem before disassembly, if possible. Disassembly Procedure
2008 Chevrolet Silverado 1500 2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 138: View Of Special Tools J 36616-2, J 33791-1, Thrust Bearing, J 21474-18 & 1. Remove the upper differential carrier assembly bushing by performing the following steps: 1. Install the J 36616-2 (1), the J 33791-1 (2), the thrust bearing (3), the J 21474-18 (4), and the forcing screw as shown. 2. Remove the upper differential carrier assembly bushing by holding the forcing screw and tightening the J 21474-18.
2008 Chevrolet Silverado 1500 2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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