GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2008 🢒 Sierra - 4WD 🢒 Transmission/Transaxle 🢒 Transfer Case - MP 1222/1225/1226-NQG 🢒 Two/Four Wheel Drive Shift Components Cleaning and Inspection

Object Number: 1843593 Size: MF

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 all components in cleaning solvent and air dry.

1

Transfer Case Two/Four Wheel Drive Synchronizer Insert

Tip
Inspect the inserts for wear.

2

Transfer Case Two/Four Wheel Drive Synchronizer Hub Engagement Teeth

Tip
Inspect the engagement teeth for wear.

3

Transfer Case Two/Four Wheel Drive Synchronizer Hub Splines

Tip
Inspect the splines for loose fit on the rear output shaft.

4

Transfer Case Two/Four Wheel Drive Synchronizer Assembly

Tip
Inspect the synchronizer for wear or chipped teeth.

5

Transfer Case Two/Four Wheel Drive Synchronizer Blocking Ring - Outer

Tip
Inspect the synchronizer ring for wear, damage, or missing material.

6

Transfer Case Two/Four Wheel Drive Synchronizer Blocking Ring - Inner

Tip
Inspect the synchronizer ring for wear or roughness.

7

Transfer Case Two/Four Wheel Drive Synchronizer Sleeve Engagement Teeth

Tip
Inspect the engagement teeth for wear.

8

Transfer Case Two/Four Wheel Drive Synchronizer Sleeve Collar

Tip
Inspect the collar for wear.

9

Transfer Case Two/Four Wheel Drive Shift Fork Inserts

Tip
Inspect the inserts for wear.

10

Transfer Case Two/Four Wheel Drive Shift Fork Assembly

Tip
Inspect for cracks, broken areas, or other damage. The component must be replaced if damage is found.

11

Transfer Case Two/Four Wheel Drive Shift Fork Bearings

Tip
Replace the shift fork if roughness or pitting is detected.

12

Transfer Case Two/Four Wheel Drive Shift Fork Pin

Tip
Replace the shift fork if the pin is worn.