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Transfer Case Cleaning and Inspection

Transfer Case Cleaning and Inspection

Transfer Case Housing


1.
Note

The bearings, shafts, gears, and housings are not serviceable components. If damage to any of those components is present, the transfer case must be replaced as an assembly.


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


2. Inspect the housing for the following:

• Damage to threaded bolt holes (1 and 2)

• Damaged sealing surfaces (3)

• Bearing races (5) with wear or pitting

• Porosity

• External Damage


Rear Extension Housing


1.
Note

The bearings, shafts, gears, and housings are not serviceable components. If damage to any of those components is present, the transfer case must be replaced as an assembly


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


2. Refer to Machined Surface Damage Caution .

Inspect the housing for the following:

• Damages sealing surfaces (1)

• Damage to threaded bolt holes (2)

• Bearing races (3) with wear or pitting

• Porosity

• External Damage


Input Shaft


1.
Note

The bearings, shafts, gears, and housings are not serviceable components. If damage to any of those components is present, the transfer case must be replaced as an assembly


Clean the input shaft in cleaning solvent.


2. Inspect the input shaft splines (1) for excessive wear or damage.

3. Inspect the input shaft seal surfaces (2 and 5) for excessive grooves, rust, pitting or other damage.

4. Inspect the input shaft gear teeth (4) for excessive wear or damage.


Idler Gear and Idler Shaft


1.
Note

The bearings, shafts, gears, and housings are not serviceable components. If damage to any of those components is present, the transfer case must be replaced as an assembly


Clean the idler shaft in cleaning solvent.


2. Inspect the idler shaft seal surfaces (8) for excessive grooves, rust, pitting or other damage. - RPO MH4

3. Inspect the sealing surfaces of the idler gear shaft (5) for excessive grooves, rust, pitting or other damage. - RPO MXE

4. Inspect the idler shaft gear teeth (3 and 4) for excessive wear or damage

5. Inspect the bearings (2 and 6) for pitting, wear or other damage.