Chevrolet Silverado / GMC Sierra. Manual — part 2941

in the bore.

5

Transfer Case High/Low Clutch Engagement Teeth
Tip: Inspect the engagement teeth for chips or
excessive wear.

6

Transfer Case Input Shaft Pilot Bearing Assembly
Tip: Replace the bearing if roughness, brinelling,
or pitting is detected. Refer to Input Shaft Pilot
Bearing Replacement (Light Duty) or Input
Shaft Pilot Bearing Replacement (Heavy Duty
and Super Heavy Duty) .

7

Transfer Case Input Shaft Pilot Bearing Assembly
Retaining Ring (HD only)

8

Transfer Case Front Output Shaft Front Bearing
Assembly
Tip: Replace the bearing if roughness, brinelling,
or pitting is detected. Refer to Front Output
Shaft Front and Rear Bearing Replacement .

9

Transfer Case Front Output Shaft Seal Surface
Tip: Inspect for pitting, excessive wear, or damage.

10

Transfer Case Front Output Shaft Front Bearing
Surface
Tip: If the bearing is removed, inspect for
excessive wear, damage, or if the bearing has spun
on the shaft.

11

Transfer Case Front Output Shaft Driven Sprocket
Engagement Splines
Tip: Witness marks at the location of the sprocket
is normal.

12

Transfer Case Front Output Shaft Rear Bearing
Surface
Tip: If the bearing is removed, inspect for
excessive wear, damage, or if the bearing has spun
on the shaft.

13

Transfer Case Front Output Shaft Hole Plug
Tip: Replace the plug if removed. Refer to Front
Output Shaft Front and Rear Bearing
Replacement .
Transfer Case Front Output Shaft Rear Bearing

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - MP 3023/3024-NQH - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

DRIVE CHAIN, DRIVE SPROCKET, AND DRIVEN SPROCKET CLEANING AND INSPE
INSPECTION

Fig. 35: Drive Chain, Drive Sprocket, and Driven Sprocket Cleaning and Inspection
Courtesy of GENERAL MOTORS CORP.

14

Assembly
Tip: Replace the bearing if roughness, brinelling,
or pitting is detected. Refer to Front Output
Shaft Front and Rear Bearing Replacement .

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.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - MP 3023/3024-NQH - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

HIGH/LOW PLANETARY CARRIER CLEANING AND INSPECTION

Replace any components if damage is found in this procedure. The sprockets must be
replaced as a pair.

Clean all components in cleaning solvent and air dry.

1

Transfer Case Front Output Shaft Drive Sprocket
Bearing Assembly
Tip: Replace the bearings if roughness, brinelling, or
pitting is detected. Refer to Front Output Shaft
Drive Sprocket Bearing Replacement .

2

Transfer Case Front Output Shaft Drive Sprocket
Bearing Bore
Tip: If the bearing is removed, inspect for excessive
wear, damage, or if the bearing has spun in the bore.

3

Transfer Case Four Wheel Drive Clutch Housing
Engagement Teeth
Tip: Inspect the engagement teeth for chips or
excessive wear.

4

Transfer Case Front Output Shaft Drive Sprocket
Tip:

Inspect for chipped teeth, excessively worn
gear surfaces, and debris embedded in the root
of the teeth.

Witness marks at the location of the chain is
normal.

5

Transfer Case Front Output Shaft Driven Sprocket
Tip:

Inspect for chipped teeth, excessively worn
gear surfaces, and debris embedded in the root
of the teeth.

Witness marks at the location of the chain is
normal.

6

Transfer Case Front Output Shaft Drive Chain
Assembly
Tip: Inspect for loose link pins, binding or stiff links,
debris embedded in the links, or worn teeth surfaces.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - MP 3023/3024-NQH - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado