Chevrolet Silverado / GMC Sierra. Service manual — part 2827

Fig. 77: Checking Planetary Differential Pinion Gear Rotation
Courtesy of GENERAL MOTORS CORP.

18. Temporarily install the rear output shaft to the planetary differential and the rear sun gear.

19. Rotate the rear output shaft three or four revolutions to rotate the planetary differential

pinion gears. If properly aligned, the planetary pinion gears will rotate freely, and there will

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

be no binding.

20. Remove the rear output shaft without disturbing the rear sun gear.

Fig. 78: View Of Front Output Shaft Rear Bearing
Courtesy of GENERAL MOTORS CORP.

21. Install the front output shaft rear bearing in the rear case half.

Use a hammer and a brass drift only on the outer bearing race.

Ensure the bearing is kept square to the bore while installing.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Fig. 79: Using J 22912-01 To Install Rear Output Shaft Bearing
Courtesy of GENERAL MOTORS CORP.

22. Using a hydraulic press and the J 22912-B , install the rear output shaft bearing.

The retaining ring groove on the bearing goes toward the input end or forward.

Use a suitable press plate on the end of the rear output shaft.

Ensure the bearing is supported on the inner race.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Fig. 80: Identifying Rear Output Shaft Bearing Retaining Ring
Courtesy of GENERAL MOTORS CORP.

23. Install a NEW retaining ring for the rear output shaft bearing.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado