Hummer H3. Manual — part 1688

Fig. 120: View Of Chain With Drive Sprocket & Driven Sprocket
Courtesy of GENERAL MOTORS CORP.

33. Install the drive chain and sprockets.

The blue link on the chain faces up.

Align the drive sprocket engagement teeth with the lockup shift assembly hub teeth.

IMPORTANT: If using the chain and sprockets again, ensure to align the

marks of the drive chain and sprockets.

2007 Hummer H3

2007 TRANSMISSION Transfer Case - BW 4493/4494 - H3

Fig. 121: Identifying Front Output Sun Gear
Courtesy of GENERAL MOTORS CORP.

34. Install the front output sun gear.

2007 Hummer H3

2007 TRANSMISSION Transfer Case - BW 4493/4494 - H3

Fig. 122: Aligning Marks On Pinion Gears
Courtesy of GENERAL MOTORS CORP.

35. With the rear side of the planetary differential facing up, align the marks on the pinion

gears. Position the alignment marks with an area on the planetary differential that can be
reference for all gears.

IMPORTANT: The planetary differential gears are timed to the sun gears. If

the gears are not timed properly, the differential will not
rotate without binding.

2007 Hummer H3

2007 TRANSMISSION Transfer Case - BW 4493/4494 - H3

Fig. 123: Identifying Planetary Differential Assembly
Courtesy of GENERAL MOTORS CORP.

36. Install the planetary differential assembly.

Do not rotate the planetary differential pinion gears when installing.

Ensure the alignment marks are in position.

The single row pinion gears face rearward or up. The double row pinion gears face
forward or down.

2007 Hummer H3

2007 TRANSMISSION Transfer Case - BW 4493/4494 - H3