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Chevrolet Silverado / GMC Sierra. Manual - part 2826
Fig. 74: Identifying Planetary Differential Assembly
Courtesy of GENERAL MOTORS CORP.
14. Install the planetary differential assembly.
Do not rotate the planetary differential pinion gears when installing.
Ensure the alignment marks are still in position.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 75: View Of Sun Gear Thrust Washer
Courtesy of GENERAL MOTORS CORP.
15. Lubricate the sun gear thrust washer with J 36850 or equivalent.
16. Install the sun gear thrust washer.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 76: Aligning Sun Gear
Courtesy of GENERAL MOTORS CORP.
17. Install the rear sun gear.
The shoulder side of the gear faces up.
Do not rotate the planetary pinion gears.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
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
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