Chevrolet Silverado / GMC Sierra. Service manual — part 2849

Front Output Shaft Assembly Removal

7

Transfer Case Input Shaft Seal

8

Transfer Case Input Shaft Bearing Outer Retaining
Ring

CAUTION:

Do not rotate the transfer case while the retaining ring
is removed. Rotating the transfer case while the
retaining ring is removed, may cause the input
shaft/planetary assembly to fall from the transfer case,
resulting in personal injury.

9

Transfer Case Input Shaft/Planetary Assembly

10

Transfer Case High/Low Planetary Carrier
Retaining Ring

11

Transfer Case High/Low Locking Plate

12

Transfer Case Planetary Carrier Sun Gear Thrust
Washer

13

Transfer Case Input Shaft

14

Transfer Case Input Shaft Pilot Bearing Assembly
Tip: Only remove the bearing if faulty.
Refer to Front Output Shaft and Input Shaft
Cleaning and Inspection.

15

Transfer Case Planetary Carrier Sun Gear Thrust
Washer

16

Transfer Case High/Low Planetary Carrier
Assembly

17

Transfer Case Input Shaft Inner Retaining Ring

18

Transfer Case Input Shaft Bearing Assembly

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - MP 1222/1225/1226-NQG - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 26: Front Output Shaft Assembly
Courtesy of GENERAL MOTORS CORP.

Front Output Shaft Assembly Removal

Callout

Component Name

1

Transfer Case Front Case Half
Tip: Place the front case half on an arbor
press.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - MP 1222/1225/1226-NQG - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

TRANSFER CASE FRONT HALF CLEANING AND INSPECTION

Fig. 27: View Of Transfer Case Front Half Inspection Points
Courtesy of GENERAL MOTORS CORP.

2

Transfer Case Front Output Shaft Assembly
Tip: Press the front output shaft assembly from
the front case half using an arbor press or soft-
face hammer.

3

Transfer Case Front Output Shaft Seal

Callout

Component Name

NOTE:

Refer to Machined Surface Damage Notice .

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - MP 1222/1225/1226-NQG - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Preliminary Procedure

Inspect all components or sub-components and perform any repair procedure
necessary to fix the damage. If the damage cannot be repaired, replace the component
or sub-component as indicated.

Clean the front case half in cleaning solvent and air dry.

Remove any sealant from the sealing surface.

1

Transfer Case Front Half Assembly
Tip: Inspect for cracks, broken areas, or other
damage. The component must be replaced if
damage is found.

2

Transfer Case Front Output Shaft Front Bearing
Bore
Tip: Replace the front case half assembly if a
bearing has spun or if cracks are detected.

3

Transfer Case Studs (Qty: 6)
Tip: Replace any damaged studs.

4

Transfer Case Input Shaft Bearing Bore
Tip: Replace the front case half assembly if a
bearing has spun or if cracks are detected.

5

Case Sealing Surface
Tip: Repair small scratches or nicks with a soft
stone.

6

Transfer Case Thread Bolt Holes
Tip: Repair any damaged threads.

7

Transfer Case Locating Pin Holes
Tip: Replace the front half case assembly if the
locating pin holes are out of round or damaged.

8

Transfer Case Locating Pins (Qty: 2)
Tip: Repair or replace loose, missing, or damaged
locating pins.

9

Transfer Case High/Low Internal Gear
Tip: Replace the front case half assembly if the
gear is loose in the case, or if the gear teeth are
chipped or embedded with debris.

10

Transfer Case Shift Detent Lever Bearing Bore
Tip: Replace the front case half assembly if a
bearing has spun or if cracks are detected.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - MP 1222/1225/1226-NQG - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado