SEAL 4D7849 - Caterpillar

Removal Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Dispose of all fluids according to local regulations and mandates.
Note: Plug and cap all open ports and tube assemblies.
Loosen the hose clamps and disconnect the hose assembly from the turbocharger inlet.
Loosen the hose clamps and disconnect the hose assembly from the turbocharger outlet.
If necessary, remove the hose assembly from the wastegate actuator on the turbocharger.
Remove the exhaust out tube assembly from the turbocharger, refer to the Original Equipment Manufactures (OEM) for the correct procedure.
If necessary, remove the exhaust elbow. Refer to Disassembly and Assembly, "Exhaust Elbow - Remove and Install" for the correct procedure.
Illustration 1 g02790856
Typical example
Remove banjo bolt (1) and remove sealing washers (2) from tube assembly (10).
Remove bolts (6) from tube assembly (9). Remove gasket (5).
Remove the tube clamps from tube assembly (9) and tube assembly (10). Position tube assembly (10) away from turbocharger (4).
Remove nuts (3) from turbocharger (4).
Remove turbocharger (4) from exhaust manifold (8).
If necessary, remove studs (7) from exhaust manifold (8).
Illustration 2 g02790880
Typical example
In order to remove tube assembly (9) and tube assembly (10) the removal of exhaust manifold (8) will be necessary.
Remove bolt (13) from tube clips (12) and remove spacer (11).
Remove bolt (15) from tube assembly (10). Disconnect tube assembly (10) from the cylinder block.
Remove bolts (17) from tube assembly (9). Remove gasket (16).
Remove exhaust manifold. Refer to Disassembly and Assembly, "Exhaust Manifold (Top Mounted Turbo Charger Exhaust Manifold) - Remove and Install" for the correct procedure.
Remove tube assembly (9) and tube assembly (10). Remove O-ring seal (14) from tube assembly (10).