BAND 3K7757 - Caterpillar

DISASSEMBLE TURBOCHARGERS (AIRESEARCH TV81 AND TW81)
start by:a) remove turbochargers1. Put the turbocharger in position on tool group (A) as shown. Put marks on the three housings of the turbocharger for correct installation and alignment at assembly.2. Loosen clamp (2) and remove compressor housing (1) and the clamp from the cartridge assembly.3. Loosen clamp (5) and remove cartridge assembly (3) from turbine housing (4).
CAUTION To prevent a bent shaft, do not put a side force on the turbine shaft when the compressor wheel nut is loosened.
4. Put the end of the turbine shaft in tool (B). Use a universal joint and socket of the correct size to remove the nut that holds compressor wheel (6) on the turbine shaft.5. Use a press and push the turbine shaft out of compressor wheel (6) and the cartridge housing. Remove compressor wheel (6) from the cartridge housing. 6. Remove seal ring (8) and shroud (9) from turbine shaft (7).7. Bend the tabs of the locks from bolts (10) and remove the bolts.8. Remove backplate assembly (11) from the cartridge housing. Make a note of the position of the oil holes in the backplate assembly and cartridge housing for correct alignment at assembly.9. Remove spacer (12) from backplate assembly (11).10. Remove seal rings (13) from spacer (12).11. Remove thrust collar (14) and seal ring (15) from the cartridge housing. 12. Remove thrust bearing (16) from the cartridge housing. If the bearings are to be used again, put identification on them as to their location for correct assembly.13. Remove bearing (17) and the washer below the bearing from the cartridge housing.14. Use tool (C) and remove snap rings (18) and (19) from the cartridge housing.15. Remove bearing (20) and washer (21) from the cartridge housing.16. If necessary, use tool (C) and compress the end snap ring and push it out of the bearing bore toward the compressor end of the cartridge housing to remove it. ASSEMBLE TURBOCHARGERS (AIRESEARCH TV81 AND TW81)
1. Make sure all of the oil passages in the turbocharger cartridge housing, backplate assembly and bearings are clean and free of dirt and foreign material. 2. Put clean oil on all parts of the cartridge at assembly. Make sure the round edge of the snap rings are toward the bearings when the snap rings are installed.3. Use tool (A) and install snap ring (1) in the turbine end of the cartridge housing.4. Install washer (2) and bearing (3). Use tool (A) to install snap ring (4) to hold the washer and bearing in position.5. Use tool (A) and install snap ring (5) in the cartridge housing.6. Install washer (7) and bearing (6) in the cartridge housing until washer (7) makes contact with snap ring (5).7. Install thrust bearing (8) over the dowels in the cartridge housing. Make sure the grooves in bearing (8) are toward the outside as shown. 8. Install seal ring (9) in the groove of the cartridge housing.9. Put thrust collar (10) in position