889340 Mercruiser SHIELD, Heat ( Turbo )

Start By:
Remove the rear hood. Refer to Disassembly and Assembly, "Hood (Rear) - Remove and Install".
Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact skin.
Personal injury can result from hot coolant, steam and alkali.At operating temperature, engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot coolant or steam. Any contact can cause severe burns.Remove filler cap slowly to relieve pressure only when engine is stopped and radiator cap is cool enough to touch with your bare hand.Cooling System Conditioner contains alkali. Avoid contact with skin and eyes.
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.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Note: Install caps and plugs on all openings in order to prevent dirt or debris from entering the system. Cleanliness is an important factor. Before the removal procedure, the exterior of the component should be thoroughly cleaned. This will prevent dirt from entering the internal mechanism.
Position a suitable container below the radiator in order to contain the coolant for storage or for disposal. Drain the coolant from the radiator to a level below the turbochargers. Refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change".Note: The removal procedure for the left turbocharger is shown. This procedure can also be used to remove the right turbocharger (not shown).
Illustration 1 g00653837
Position a suitable lifting sling around pipe assembly (2), as shown. Secure the lifting sling to a suitable hoist.
Remove clamp (3). Remove four bolts (1) and the washers. Remove pipe assembly (2) from the machine.
Illustration 2 g00653868
Typical example
Remove two bolts (4) and the washers in order to disconnect the turbocharger from the air inlet elbow. Disconnect tube assembly (5) and hose assembly (6) from the turbocharger.
Illustration 3 g00653869
Position a suitable container below drain elbow (8) in order to contain the oil for storage or for disposal. Remove two bolts (7) and disconnect drain elbow (8) .
Illustration 4 g00653870
Typical example
Illustration 5 g00653950
Do not remove the compressor cover during the removal procedure or the installation procedure. Damage to the turbocharger cartridge could result.
Note: The compressor cover has been removed in Illustration 4 for photographic reasons. Do not remove the compressor cover.
Disconnect tube assembly (10) from turbocharger (9). Position a suitable lifting sling around turbocharger (9). Secure the lifting sling to a suitable hoist.
Label four high temperature bolts (11) and four high temperature bolts (12) for installation purposes. Remove four high temperature bolts (11), four high temperature bolts (12), and the locknuts that hold turbocharger (9) in position.
Remove turbocharger (9) from the engine. Remove the gasket from the drain elbow. Remove the gasket from the turbine housing. Discard the used gaskets.