ENGINE AR-PRIMARY 3801773 - Caterpillar

Illustration 3 g00593906
Typical example
Loosen clamp (5) and remove cartridge assembly (3) from turbine housing (4).
Illustration 4 g00593907
Typical example
Do Not place a side force on the shaft when the nut is removed or tightened. The shaft will bend and cause damage to the turbocharger.
Place the end of the turbine shaft in Tooling (B). Use a socket with a universal joint to remove the nut that holds compressor wheel (6).
Illustration 5 g00593908
Typical example
Use a suitable press to push the turbine shaft out of compressor wheel (6) and the cartridge housing. Remove compressor wheel (6).
Illustration 6 g00593915
Typical example
Remove seal ring (8) and shroud (9) from turbine shaft (7).
Illustration 7 g00593920
Typical example
Illustration 8 g00593918
Typical example
Bend the tabs of the locks away from bolts (10) and remove bolts (10). Note: Examine the position of the oil holes in the back plate assembly and the cartridge housing for the assembly procedure.
Remove back plate assembly (11).
Remove spacer (12) from back plate assembly (11).
Illustration 9 g00593922
Typical example
Remove seal rings (13) from spacer (12).
Illustration 10 g00593923
Typical example
Remove thrust collar (14) and seal ring (15).
Illustration 11 g00593925
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Remove thrust bearing (16).
Illustration 12 g00593962
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Note: Place an identification mark on the bearings if the bearings are reusable.
Remove bearing (17) and the washer from the cartridge housing.
Illustration 13 g00593963
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Use Tooling (C) to remove retaining rings (18) and (19).
Illustration 14 g00593965
Typical example
Remove bearing (20) and washer (21).
Illustration 15 g01257541
Typical example
Use Tooling (C) to remove the lower retaining ring (22) from the cartridge housing.