Question 1

How to service and repair the front drive axle's pinion bearing on Chevrolet Colorado?

Accepted Answer

The procedure to service and repair the Pinion Bearing of the front drive axle begins with vehicle lift before Differential carrier assembly removal. Prepare a (J 22536) on the pinion before fixing it in place and striking it with a hammer to extract it while preventing it from slipping out of the rear axle housing. Open the collapsible spacer while removing the pinion bearings with their cups before taking off the ring gear. Clean the mating surface between the ring gear and Differential case after which the new ring gear bolts can be installed by hand-starting them one-by-one to check alignment before torquing them alternately at 120 nm (89 lb ft). Determine the selective shim thickness for the pinion gear before installing the drive Pinion Bearing cups. The installation process begins with the selective shim placed on the pinion until the inner Pinion Bearing receives placement with a new collapsible spacer after which pinion bearings receive axle lubricant. Put the pinion inside the axle housing before attaching the outer Pinion Bearing and a fresh pinion oil seal through tool (J 21128). Apply sealant to the splines of the pinion yoke then install it according to the removal marks while soft-facing hammer taps help seat the yoke properly. You should use (J 8614-01) to maintain pinion yoke position before tightening the new pinion nut until the pinion end play reaches a proper seating. The pinion torque requires measurement while the pinion end play remains just taken up. Use a torque wrench to check for rotating torques between 1.0 - 2.3 nm (10 - 20 lb in) for used bearings and 1.7 - 3.4 nm (15 - 30 lb in) for new bearings before necessary adjustments. Achieve the required torque on the pinion then spin it several times to ensure optimal bearing seating before putting on the Differential carrier and conducting a pinion-ring gear tooth contact pattern check. A 4.318 mm (0.170 in) thick service spacer must be inserted into the left side of the axle housing before sliding the Differential assembly towards it when performing Differential side bearing preload adjustment. Measure the right side Differential side bearing cup's thickness using tool (J 22779) before obtaining an average value. The (J 22779) will be utilized to adjust the backlash on the right side to a range of 0.025-0.051 mm (0.001-0.002 in), starting from a right-side shim of 1.016 mm (0.040 in) and then adding a bent shim. Measure the tool in three locations after removal to get left service shim thickness without preload and then perform right side calculation. Organize both shim packs and install the Differential assembly before torquing the Differential bearing cap bolts to 63 nm (46 lb ft). Check the drive pinion and Differential side bearing preload numbers then change the shim thickness if needed to maintain specifications. A gear tooth contact pattern evaluation serves as the last step to validate proper ring and pinion gear alignment.

Question 2

How to replace the drive pinion bearings in the front drive axle on Chevrolet Colorado?

Accepted Answer

Starting the process of drive Pinion Bearing replacement in the front drive axle requires vehicle lift and separation of Differential carrier assembly before removing the drive pinion from the axle. The split-plate bearing puller (J 22912-01) serves to furnish bearing removal from the pinion before the shim can be removed. Use even pressure from a hammer and brass drift to remove the outer Pinion Bearing cup from the axle housing and perform the same extraction method on the inner Pinion Bearing cup. To install the outrace Pinion Bearing cup readers should use the outer bearing race installer (J 7817) with a universal driver handle (J 809.2) while the rear Pinion Bearing cup installer (J 29609) combined with the universal driver handle (J 809.2) must be used to install the innface bearing cup. Place the determined selective shim between the inner Pinion Bearing and the gear shoulder. The inner Pinion Bearing must be pressed into its place using the Pinion Bearing race installer - rear (J 55913) until the cone settles onto the pinion shim. Then proceed with installing a fresh collapsible spacer before applying proper axle lubricant to the pinion bearings. After this put the pinion inside the axle housing. Use the j 21128 axle pinion oil seal installer to install a new pinion oil seal upon the outer Pinion Bearing which has already received placement onto the pinion shaft. Put gm p/n 12346004 (Canadian P/N 10953480) sealant on the splines of the pinion yoke before installing it by matching the alignment marks from un installation. Use a soft-faced hammer to tap the pinion yoke onto its pinion shaft until several threads are exposed through the yoke but before fixing the new washer and pinion nut. Hold the pinion yoke in position using flange and pulley holding tool (J 8614-01) while tightening the pinion nut until the pinion end plays is fully seated by rotating the pinion during this procedure. An inch-pound torque wrench should be used to check the pinion's rotary torque and it should range from 1.0 to 2.3 nm (10 to 20 inch lbs.) for used bearings or 1.7 to 3.4 nm (15 to 30 inch lbs.) for new bearings. Follow the procedure by tightening the pinion nut in small steps until you reach the proper torque value when the indicated range shows that the value is lower than expected. When the target torque value is achieved the technician should rotate the pinion multiple times to verify bearing seating then recheck the torque before reinstalling the Differential carrier and lowering the vehicle down.

OEM Chevrolet Colorado Pinion Bearing

12 Pinion Bearings found

Chevrolet Colorado Pinion Bearings Part Number: 9417784

Chevrolet Colorado Side Bearings Part Number: 25824250

Chevrolet Colorado Rear Pinion Bearing Part Number: 23490333

Chevrolet Colorado Pinion Bearings Part Number: 23243839

Chevrolet Colorado Pinion Bearings, Inner Part Number: 22510042

Chevrolet Colorado Pinion Bearings, Front Outer Part Number: 84428300

Chevrolet Colorado Front Pinion Bearing, Outer Part Number: 85617857

Chevrolet Colorado Pinion Bearings, Outer Part Number: 84937118

Chevrolet Colorado Pinion Bearings, Rear Part Number: 84937117

Chevrolet Colorado Pinion Bearings Part Number: 84428299

Chevrolet Colorado Rear Pinion Bearing Part Number: 23490334

Chevrolet Colorado Front Pinion Bearing Part Number: 23471879

Chevrolet Colorado Pinion Bearing

Chevrolet Colorado Pinion Bearing Parts and Q&A

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