GASKET 2257944 - Caterpillar

Disassemble Turbocharger (Schwitzer 4MF And 4MFW)
1. Install turbocharger in tool group (A). Put marks on the three housings of the turbocharger for correct installation and alignment at assembly. Remove "V" clamp (2) and compressor housing (1). 2. Remove "V" clamp (3). Remove the cartridge housing (5) from the turbine housing (4). 3. Put the cartridge assembly in tool (B) as shown.
When the nut is loosened, do not put a side force on the shaft.
4. Use tool (C) and remove the nut that holds compressor wheel (6). Remove compressor wheel (6). 5. Remove the turbine shaft (7) from the cartridge housing. 6. Remove seal ring (9) and shroud (8) from turbine shaft (7). 7. Use tool (D) and remove ring (11) that holds insert (10) in the cartridge housing. 8. Remove insert (10) with tooling (E). 9. Remove O-ring seal (13) and sleeve (12) from insert (10). Remove the seal rings from sleeve (12). 10. Remove deflector (14) and the ring from the cartridge housing. 11. Remove bearing (15), sleeve (16) and the ring from the cartridge housing. The oil hole in bearing (15) must be open or a bearing failure will be the result. 12. Use tool (F) and remove the ring that holds bearings (17) in position. Remove bearing (17) and put a long dye mark on the top face of the bearing. 13. Turn the cartridge assembly over. Use tool (F) and remove the ring that holds bearing (18) in position. Remove bearing (18) from the cartridge housing. Put a short dye mark on the top face of bearing (18). The dye marks are used for identification of the bearings when they are installed.14. If necessary, remove the two rings that hold the bearings in position from the cartridge housing with tool (F).15. Check all the parts of the turbocharger for damage. If the parts have damage, use new parts for replacement. See SPECIAL INSTRUCTION Form No. SMHS6854 for TURBOCHARGER RECONDITIONING. Also see GUIDELINE FOR REUSABLE PARTS Form No. SEBF8018-01.Assemble Turbocharger (Schwitzer 4MF And 4MFW)
1. Make sure all of the oil passages in the turbocharger cartridge housing are clean and free of dirt and foreign material.2. Put clean engine oil on all parts of the cartridge assembly.3. Make a replacement of the two inside rings that hold the bearings in position in the cartridge housing if necessary. Install the rings that hold the bearings in position with the round edges of the rings toward the bearings.4. Install bearing (2) in the cartrige housing with the short dye mark up.5. Use tool (A) to install ring (1) in the cartridge housing. 6. Turn the cartridge assembly over and install bearing (4) with the long dye mark up. Use tool (A) and install ring (3) to hold the bearing in position. 7. Install ring (7), sleeve (6) and bearing (5) in the cartridge housing. Make sure the oil hole in bearing (5) is open and clean to prevent a bearing failure. 8. Install ring (9) and deflector