ALTERNATOR GP-CHARGING 4510088 - Caterpillar

Start By:a. remove turbocharger 1. Make an alignment mark on compressor housing (1), cartridge assembly (3) and the turbine housing (4) for correct installation.2. Loosen clamp assembly (2). Remove compressor housing (1) and cartridge assembly (3) from the turbine housing. 3. Remove bolts (6) and plates (5) that hold the cartridge assembly in the compressor housing. Remove cartridge assembly (3). 4. Remove O-ring seal (7) from the cartridge assembly. 5. Put cartridge assembly (3) in position in tooling (A), and loosen the nut on the compressor wheel with tooling (C).
To prevent a bent shaft, do not put a side force on the turbine shaft when the compressor wheel nut is loosened.
6. Remove nut (8) and compressor wheel (9). 7. Remove shaft and eheel assembly (10) from the cartridge assembly. 8. Remove shroud (11) from the cartridge assembly. 9. Remove four bolts (12); then remove backplate (13) from the cartridge assembly. 10. Remove spacer (14) from the backplate. 11. Remove two seal rings (15) from the spacer. 12. Remove snap ring (16) from the cartridge housing with tool (B). 13. Remove bearing (17) and the rings from the cartridge housing. 14. Remove snap ring (18) from the cartridge housing with tool (B). 15. Turn the cartridge housing over; then remove screws (20), plate (21) and collar (19). 16. Remove bearing (22) from the cartridge housing. 17. Remove snap ring (23) from the cartridge housing with tool (B). The following steps are to assemble the turbocharger. Make sure all the oil passages in the turbocharger cartridge housing are clean and free of dirt and foreign material. Put clean engine oil on all parts of the cartridge assembly.18. Install snap ring (1) in the cartridge housing with tool (B). Make sure the oil hole in plate (5) is open and clean to prevent a bearing failure.19. Install bearing (2), collars (3), plate (5) and screws (4). Tighten the screws to a torque of 2.5 N m (22 lb.in.).
Install the rings with the round edge of the outside diameter of the rings toward the bearings.
20. Turn the cartridge housing over. Install snap ring (6) in the cartridge housing with tool (B). Install bearing (7), ring (8) and ring (9) in the housing. Install snap ring (10) with tool (B). Put 6V2055 High Vacuum Grease in the grooves for seal rings (11) at assembly to one half or more of the depth of the groove all the way around the grooves.21. Install seal rings (11) on spacer (12). 22. Install spacer (12) in the backplate. 23. Put backplate (13) in position on the cartridge housing, and install the bolts that hold it. Tighten the bolts to a torque of 9.5 1.m (84 lb.in.). 24. Put shroud (14) in position on the cartridge housing. Put 6V2055 High Vacuum Grease in the groove for the oil seal ring on shaft and wheel assembly (15).25. Install shaft and wheel assembly (15) in the cartridge housing. 26. Put the cartridge assembly in position in tooling (A).27.