PUMP GP-METERING 2106240 - Caterpillar

Disassemble Turbocharger (T12)
START BY:a. remove turbocharger (T12) 1. Install the turbocharger on tool (A).2. Put alignment marks on the housings for correct installation at assembly.3. Loosen clamp (1). Remove compressor housing (2). Remove the clamp. 4. Remove bolts (3), locks (6) and plates (5).5. Remove the center section from turbine housing (4). 6. Install tool (C) in tool (B). Install the center section in tool (C) as shown.
When nut (7) is loosened, do not put side force on the shaft. The shaft may bend.
7. Remove nut (7) that holds the impeller to the shaft and wheel assembly. 8. Install tool (D) with the center section on tool (E). Remove impeller (9) with an arbor press (8) and tool (F). 9. Remove shaft and wheel assembly (10), shroud (11) and spacer (13) from center housing (12). 10. Remove bolts (14), locks (15) and plate (16) from the center housing. 11. Remove collar (17) from housing. 12. Remove two bearings (18) and three snap rings (19) from the center housing.Assemble Turbocharger (T12)
1. Make sure that 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.
Rings (9), (11) and (15) must be installed with the round edge of the outside diameter of the rings toward the bearings.
3. Install snap ring (15), bearing (12) and snap ring (11) in center housing (10). Install snap ring (9) and bearing (8). Put 6V2055 High Vacuum Grease in the groove for seal ring (14) at assembly to one half or more of the depth of the groove all the way around.
Do not cause damage to seal ring (14) when the shaft and wheel assembly is installed.
4. Install shroud (13), and install seal ring (14) on turbine wheel and shaft assembly (16). Install shaft and wheel assembly (16) in the center housing.5. Install spacer (7) and collar (6).6. Put plate (5) in position on the center housing. Install bolts (4). Tighten the bolts to a torque of 4.5 0.6 N m (40 5 lb.in.).
If spacer (3) is installed with its small inside diameter toward the center housing, it will cause a restriction in the flow of oil to the chambers and ring. This will cause a failure to the turbocharger.
7. Install spacer (3). Make sure the small inside diameter of the spacer is toward the impeller end of the shaft and wheel assembly.8. Put a small amount of clean engine oil on the turbine shaft threads and compressor wheel face that makes contact with the nut. Install nut (2), and tighten it to a torque of 17 N m (13 lb.ft.) to push compressor wheel (1) on the shaft. Loosen the nut, and tighten it again to a torque of 3.5 N m (30 lb.in.). Tighten the nut an additional 120° of a turn.9. Remove the nut from the turbine shaft, and put 6V1541 Quick Cure Primer on the threads of the turbine