SWIVEL AS 4407306 - Caterpillar

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Straighten the locking plates and remove bolts (20) that secure cover (19).
Remove the carbon from the threaded holes. Use bolts (20) as forcing screws to remove cover (19).
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Use bolts (20) as forcing screws to remove cover assembly (21). Remove the O-ring seal from cover assembly (21).
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Remove socket head bolts (22) that hold turbine bearing assembly (23).
Use socket head bolts (22) as forcing screws to remove turbine bearing assembly (23).
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Remove socket head bolts (24) from turbine bearing assembly (23).
Separate turbine bearing assembly (23) and remove bushing (25).
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Measure the inside diameter of turbine bearing assembly (23). The maximum reusable diameter for the turbine bearing is 55.060 mm (2.1677 inch).Note: For more information on the turbocharger, refer to Reuse and Salvage Guidelines, SEBF8092, "Specifications for Reusable Turbocharger Components on 3600 Family of Engines".
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If damage is noted, remove cap (26) to perform an inspection. Be sure that the air passages are open.
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Mark the position of diffuser (27) in compressor housing (4). Remove the bolts that hold diffuser (27) to compressor housing (4).
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Attach a suitable lifting device to gas inlet housing (30). The weight of gas inlet housing (30) is approximately 41 kg (90 lb). Remove bolts (29) and the washers and remove segments (28) that secure gas inlet housing (30) to the bearing housing (center section).
Remove gas inlet housing (30).
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Remove the bolts and locking plates (31).
Remove ring cover (32).
Remove bolts (33) and the locking plates. Remove nozzle (34) from the gas inlet housing.
If necessary, remove cap (35).
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Inspect nozzle (34). Replace the nozzle, if the nozzle is damaged.
Clean each part with clean solvent. Handle each part carefully to prevent damage to the parts. Dry the parts with compressed air.
Inspect the compressor bearing assembly. Inspect the turbine bearing assembly. If the radial clearance exceeds the limits, the bearings must be replaced. The tolerance of the radial clearance was determined when the bearing clearances were checked. Also replace the bearings if high wear is observed.
If the axial clearance exceeds permissible limits, the thrust bearing must be replaced. This axial clearance was determined when the clearances of the thrust bearing were checked. Also replace the thrust bearing if high wear is observed.
Inspect the impeller assembly. Replace the impeller assembly if the impeller assembly is damaged.
Replace all the O-ring seals and the piston ring seals.