Usage:
All Turbocharged Caterpillar Truck Engines
Reference: Truck Engine News, August 1991, Page 1, "Service Tips For Turbocharger Removal And Installation. "
The following service tips can help prevent damage to the turbocharger turbine housing and turbocharger bearing housing (cartridge) when disassembling turbochargers.
General Information
1. Turbochargers are very heavy. Use care when handling them. A large part of the turbocharger weight is contained in the turbine housing.
2. In severe applications, it may be beneficial to tighten all gasketed surface joint fasteners again after the first full load cycle of the engine.
3. Inspect the surfaces between the exhaust manifold and turbine housing and replace the gasket during service.
4. Newer turbochargers have tighter clearances and thinner turbine blades. Be very careful when removing and installing the turbine housing.
Truck Engine Size Turbochargers
1. If the turbocharger cartridge will not easily disassemble from the turbine housing with the turbocharger mounted on the engine, remove the turbocharger from the engine. See the Disassembly and Assembly Module in the Service Manual.
NOTE: Turbochargers with water cooled housings will normally disassemble easily.
2. Install the turbocharger in 9S6363 Turbocharger Fixture Group or similar tool. See the illustration.
Turbocharger installed on 9S6363 Turbocharger Fixture Group.
3. If the turbine housing is stuck to the cartridge, use a two pound hammer to carefully tap around the housing in a radial direction. Continue to tap until a hollow sound can be detected.
4. Then carefully tap around the housing in the axial direction to move the housing away from the cartridge in small increments.
5. DO NOT attempt to use wedges to separate the turbine housing from the cartridge. The result could be a cartridge casting failure.
6. Experience indicates penetrating compounds duce only questionable results when attempting to loosen a stuck turbine housing.