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Chevrolet Silverado / GMC Sierra. Manual - part 2891
TRANSFER CASE FRONT HALF CLEANING AND INSPECTION
Fig. 28: Transfer Case Front Half Cleaning and Inspection
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
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
NOTE:
Refer to Machined Surface Damage Notice .
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 1625/1626-NQF - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
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 Four Wheel Drive Actuator Lever
Shaft Bearing Bore
Tip: Replace the front case half assembly if a
bearing has spun or if cracks are detected.
4
Transfer Case Studs (Qty: 6)
Tip: Replace any damaged studs.
5
Transfer Case Input Shaft Bearing Bore
Tip: Replace the front case half assembly if a
bearing has spun or if cracks are detected.
6
Case Sealing Surface
Tip: Repair small scratches or nicks with a soft
stone.
7
Transfer Case Thread Bolt Holes
Tip: Repair any damaged threads.
8
Transfer Case Locating Pin Holes
Tip: Replace the front half case assembly if the
locating pin holes are out of round or damaged.
9
Transfer Case Locating Pins (Qty: 2)
Tip: Repair or replace loose, missing, or
damaged locating pins.
10
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.
Transfer Case Four Wheel Drive Actuator Lever
Shaft Bearing Assembly
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 1625/1626-NQF - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
TRANSFER CASE REAR HALF CLEANING AND INSPECTION
Fig. 29: Transfer Case Rear Half Cleaning and Inspection
Courtesy of GENERAL MOTORS CORP.
11
Tip: Replace the bearing if roughness, brinelling,
or pitting is detected. Refer to Transfer Case
Four Wheel Drive Actuator Lever Shaft
Bearing Replacement - Front.
Callout
Component Name
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 rear case half in cleaning solvent and air dry.
Remove any sealant from the sealing surface.
NOTE:
Refer to Machined Surface Damage Notice .
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 1625/1626-NQF - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
1
Transfer Case Rear Half Assembly
Tip: Inspect for cracks, broken areas, or other damage.
The component must be replaced if damage is found.
2
Transfer Case Rear Output Shaft Rear Bearing Outer
Retaining Ring Groove
Tip: Replace the rear case half assembly if the groove is
worn.
3
Vehicle Speed Sensor Threads
Tip: Replace the rear case half assembly if the speed
sensor threads are damaged.
4
Transfer Case Rear Output Shaft Bearing Bore
Tip: Replace the rear case half assembly if a bearing has
spun or if cracks are detected.
5
Transfer Case Four Wheel Drive Actuator Lever Shaft
Bearing Bore
Tip: Replace the rear case half assembly if a bearing has
spun or if cracks are detected.
6
Case Sealing Surface
Tip: Repair small scratches or nicks with a soft stone.
7
Transfer Case Four Wheel Drive Actuator Lever Shaft
Bearing Assembly
Tip: Replace the bearing if roughness, brinelling, or
pitting is detected. Refer to Transfer Case Four Wheel
Drive Actuator Lever Shaft Bearing Replacement -
Rear.
8
Transfer Case Front Output Shaft Rear Bearing Bore
Tip: Replace the rear case half assembly if a bearing has
spun or if cracks are detected.
9
Transfer Case Locating Pin Holes
Tip: Replace the rear case half assembly if the locating
pin holes are out of round or damaged.
10
Transfer Case Rear Output Shaft Bushing
Tip:
Replace the bushing if it is damaged or worn. Refer
to Rear Output Shaft Bushing Replacement .
If the bushing is removed, inspect the bushing bore
for signs of spinning. Replace the rear case half
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 1625/1626-NQF - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Content .. 2889 2890 2891 2892 ..