0323220 MEGAPHONE,235hponly JOHNSON
150TL78S, 150TL79C, 175TL78C, 175TL79R, 200TL78R, 200TL79A, 235TL70A, 235TL78R, J150CXCEM, J150CXEIE, J150CXESB, J150TLCIA, J150TLCNM, J150TLCRD, J150TLCSF, J150TLCTB, J175STLCEB, J175STLEID, J175STLESE, J175TLCIH, J175TLCNB, J175TLCSA, J175TLCTD, J1
MEGAPHONE
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Compatible models:
150TL78S
150TL79C
175TL78C
175TL79R
200TL78R
200TL79A
235TL70A
235TL78R
J150CXCEM
J150CXEIE
J150CXESB
J150TLCIA
J150TLCNM
J150TLCRD
J150TLCSF
J150TLCTB
J175STLCEB
J175STLEID
J175STLESE
J175TLCIH
J175TLCNB
J175TLCSA
J175TLCTD
J185TLCRS
J200TLCIH
J200TLCNE
J200TLCSF
J200TLCTD
J235TLCIB
J235TLCNE
J235TLCRC
J235TLCSM
J235TLCTD
JOHNSON
BRP JOHNSON entire parts catalog list:
- EXHAUST HOUSING » 0323220
175TL78C, 175TX78C 1978
175TL79R, 175TXL79R 1979
200TL78R, 200TX78R 1978
200TL79A, 200TXL79A 1979
235TL70A, 235TXL79A 1979
235TL78R, 235TX78R 1978
J150CXCEM, J150TLAEM, J150TLCEM, J150TXCEM, TJ150TXCEM 1989
J150CXEIE, J150JLEIE, J150TLAIE, J150TLEIE, J150TXEIE, VJ150TLEIE, VJ150TXEIE 1991
J150CXESB, J150TLASB, J150TLESB, J150TXESB, VJ150TLESB, VJ150TXESB 1990
J150TLCIA, J150TLCIH, J150TXCIA, J150TXCIH 1981
J150TLCNM, J150TXCNM 1982
J150TLCRD, J150TXCRD 1984
J150TLCSF, J150TLCSR, J150TXCSF, J150TXCSR 1980
J150TLCTB, J150TLCTE, J150TXCTB, J150TXCTE 1983
J175STLCEB, J175TXCEB 1989
J175STLEID, J175TXEID, VJ175SLEID, VJ175TXEID 1991
J175STLESE, J175TXESE, VJ175SLESE, VJ175TXESE 1990
J175TLCIH, J175TLCIM, J175TXCIH, J175TXCIM 1981
J175TLCNB, J175TXCNB 1982
J175TLCSA, J175TLCSF, J175TXCSA, J175TXCSF 1980
J175TLCTD, J175TLCTE, J175TXCTD, J175TXCTE 1983
J185TLCRS, J185TXCR 1984
J200TLCIH, J200TXCIB, J200TXCIH 1981
J200TLCNE, J200TXCNE 1982
J200TLCSF, J200TLCSM, J200TXCSF, J200TXCSM 1980
J200TLCTD, J200TLCTS, J200TXCTD, J200TXCTS 1983
J235TLCIB, J235TLCIH, J235TXCIB, J235TXCIH 1981
J235TLCNE, J235TXCNE 1982
J235TLCRC, J235TXCRC 1984
J235TLCSM, J235TXCSM 1980
J235TLCTD, J235TLCTS, J235TXCTD, J235TXCTS 1983
Information:
Top End Overhaul Information
A top end overhaul involves servicing the cylinder heads and turbochargers. Also, some other engine components are inspected.Top end overhauls require more tools than preventive maintenance. The following tools are needed for restoring the engine to factory specifications:
Torque wrenches
Dial indicators
Accurate measurement tools
Cleaning equipment
Rebuilding equipmentCaterpillar dealers are equipped with these tools. Caterpillar dealers can provide a flat rate price for a top end overhaul.Unexpected problems may be found during a top end overhaul. Plan to correct these problems, if necessary.
Buildup in the cylinders from excessive oil consumption
Buildup in the cylinders from contamination of the fuel
Plugging of the aftercooler from coolant that is poorly maintained
Plugging of the aftercooler from contamination of the inlet air
Degradation of the oil cooler from hydrogen sulfide in the fuelInspect the following components according to the instructions that are in Caterpillar reusability publications. Refer to Guidelines for Reusable Parts and Salvage Operations, SEBF8029, "Index of Publications on Reusability or Salvage of Used Parts".Your Caterpillar dealer can provide these services and components. Your Caterpillar dealer can ensure that the components are operating within the appropriate specifications.If you elect to perform an overhaul without the services of a Caterpillar dealer, be aware of the following recommendations.The following definitions explain the terminology for the services that are performed during an overhaul:Inspect - Inspect the components according to the instructions that are in Caterpillar reusability publications. Refer to Guidelines for Reusable Parts and Salvage Operations, SEBF8029, "Index of Publications on Reusability or Salvage of Used Parts". The guidelines were developed in order to help Caterpillar dealers and customers to avoid unnecessary expenditures. New parts are not required if the existing parts can still be used, reconditioned, or repaired. If the components are not in the reusability guidelines, refer to the Service Manual, "Specifications" module.Rebuild - The component can be reconditioned in order to comply with reusability guidelines.Replace - The service life of the part is exhausted. The part may fail before the next maintenance interval. The part must be replaced with a part that meets functional specifications. The replacement part may be a new part, a CAT remanufactured part, a rebuilt part, or a used part. Some worn components may be exchanged with your Caterpillar dealer. Consult your Caterpillar dealer about repair options for your engine.Replacing of Components
Note: The cylinder head may be rebuilt, when possible.Replace the following components during a top end overhaul.
Alternator and fan drive belts
Cylinder heads and gaskets
Hoses and clamps
Rod ends for the control linkage of the actuator
Spark plugs
Spark plug wires
Water temperature regulatorRebuilding of Components
Rebuild the following components during a top end overhaul:
Carburetor
Gas regulator
Starting motor
Turbocharger
Water pumpsNote: Periodic inspection of the turbocharger is recommended for determining when the turbocharger will require an overhaul. In a few applications, the turbocharger may require rebuilding prior to the top end overhaul. An example is an application with loads that vary frequently. In these cases, rebuilding the turbocharger normally occurs separately from rebuilding the cylinder heads. Some applications can operate longer before the turbocharger requires rebuilding. Only experience can determine the actual need.Inspecting of Components
Clean the following components. Pressure test the components. Replace the components, if necessary:
Aftercooler core (if equipped)
Oil cooler coreNote: It is difficult to clean the aftercooler core when maintenance is not performed.Note: This procedure may be used for cleaning both the aftercooler core and the oil cooler core.
Remove the core. For the procedure, refer to the Service Manual, "Disassembly and Assembly" module.
Turn the core upside-down in order to remove debris.
Do not use a high concentration of caustic cleaner to clean the core. A high concentration of caustic cleaner can attack the internal metals of the core and cause leakage. Only use the recommended concentration of cleaner.
Do not use a high pressure spray for cleaning the fins of the core. A high pressure spray can damage the surface of the fins and reduce the flow of air through the core.
Back flush the core with cleaner. Caterpillar recommends the use of Hydrosolv liquid cleaner. Use a two to five percent concentration of the cleaner at temperatures up to 93 °C (200 °F). Refer to Application Guide, NEHS0526 or consult your Caterpillar dealer for more information.
Steam clean the core in order to remove any residue. Flush the fins of the core. Remove any other trapped debris.
Wash the core with hot, soapy water. Rinse the core thoroughly with clean water.
Personal injury can result from air pressure.Personal injury can result without following proper procedure. When using pressure air, wear a protective face shield and protective clothing.Maximum air pressure at the nozzle must be less than 205 kPa (30 psi) for cleaning purposes.
Dry the core with compressed air. Direct the air in the reverse direction of the normal flow. Note: The test pressure for the oil cooler is 790 kPa (115 psi). The maximum differential pressure of water for the aftercooler is 44 kPa (6 psi). The maximum differential pressure of air for the aftercooler is 5.1 kPa (0.74 psi).
Inspect the core in order to ensure cleanliness. Pressure test the core. Many shops that service radiators are equipped to perform pressure tests. If necessary, repair the core.
Install the core. For the procedure, refer to the Service Manual, "Disassembly and Assembly" module. For more information on cleaning the cores, consult your Caterpillar dealer.Exhaust Bypass
Inspect the condition of the exhaust bypass (if equipped). Recondition the component, if necessary. Refer to this Operation and Maintenance Manual, "Exhaust Bypass - Inspect" topic (Maintenance Section).Governor
Inspect the governor for proper operation. Make any repairs that are necessary.Transformers
The transformers produce a voltage increase. For good operation, the connections must be clean and secure. Inspect the transformers for the following conditions:
Dirty insulator
Loose connections
Loose connector
MoistureTest the resistance of the transformers according to the Service Manual, "Specifications" module. Consult your Caterpillar dealer for assistance.
A top end overhaul involves servicing the cylinder heads and turbochargers. Also, some other engine components are inspected.Top end overhauls require more tools than preventive maintenance. The following tools are needed for restoring the engine to factory specifications:
Torque wrenches
Dial indicators
Accurate measurement tools
Cleaning equipment
Rebuilding equipmentCaterpillar dealers are equipped with these tools. Caterpillar dealers can provide a flat rate price for a top end overhaul.Unexpected problems may be found during a top end overhaul. Plan to correct these problems, if necessary.
Buildup in the cylinders from excessive oil consumption
Buildup in the cylinders from contamination of the fuel
Plugging of the aftercooler from coolant that is poorly maintained
Plugging of the aftercooler from contamination of the inlet air
Degradation of the oil cooler from hydrogen sulfide in the fuelInspect the following components according to the instructions that are in Caterpillar reusability publications. Refer to Guidelines for Reusable Parts and Salvage Operations, SEBF8029, "Index of Publications on Reusability or Salvage of Used Parts".Your Caterpillar dealer can provide these services and components. Your Caterpillar dealer can ensure that the components are operating within the appropriate specifications.If you elect to perform an overhaul without the services of a Caterpillar dealer, be aware of the following recommendations.The following definitions explain the terminology for the services that are performed during an overhaul:Inspect - Inspect the components according to the instructions that are in Caterpillar reusability publications. Refer to Guidelines for Reusable Parts and Salvage Operations, SEBF8029, "Index of Publications on Reusability or Salvage of Used Parts". The guidelines were developed in order to help Caterpillar dealers and customers to avoid unnecessary expenditures. New parts are not required if the existing parts can still be used, reconditioned, or repaired. If the components are not in the reusability guidelines, refer to the Service Manual, "Specifications" module.Rebuild - The component can be reconditioned in order to comply with reusability guidelines.Replace - The service life of the part is exhausted. The part may fail before the next maintenance interval. The part must be replaced with a part that meets functional specifications. The replacement part may be a new part, a CAT remanufactured part, a rebuilt part, or a used part. Some worn components may be exchanged with your Caterpillar dealer. Consult your Caterpillar dealer about repair options for your engine.Replacing of Components
Note: The cylinder head may be rebuilt, when possible.Replace the following components during a top end overhaul.
Alternator and fan drive belts
Cylinder heads and gaskets
Hoses and clamps
Rod ends for the control linkage of the actuator
Spark plugs
Spark plug wires
Water temperature regulatorRebuilding of Components
Rebuild the following components during a top end overhaul:
Carburetor
Gas regulator
Starting motor
Turbocharger
Water pumpsNote: Periodic inspection of the turbocharger is recommended for determining when the turbocharger will require an overhaul. In a few applications, the turbocharger may require rebuilding prior to the top end overhaul. An example is an application with loads that vary frequently. In these cases, rebuilding the turbocharger normally occurs separately from rebuilding the cylinder heads. Some applications can operate longer before the turbocharger requires rebuilding. Only experience can determine the actual need.Inspecting of Components
Clean the following components. Pressure test the components. Replace the components, if necessary:
Aftercooler core (if equipped)
Oil cooler coreNote: It is difficult to clean the aftercooler core when maintenance is not performed.Note: This procedure may be used for cleaning both the aftercooler core and the oil cooler core.
Remove the core. For the procedure, refer to the Service Manual, "Disassembly and Assembly" module.
Turn the core upside-down in order to remove debris.
Do not use a high concentration of caustic cleaner to clean the core. A high concentration of caustic cleaner can attack the internal metals of the core and cause leakage. Only use the recommended concentration of cleaner.
Do not use a high pressure spray for cleaning the fins of the core. A high pressure spray can damage the surface of the fins and reduce the flow of air through the core.
Back flush the core with cleaner. Caterpillar recommends the use of Hydrosolv liquid cleaner. Use a two to five percent concentration of the cleaner at temperatures up to 93 °C (200 °F). Refer to Application Guide, NEHS0526 or consult your Caterpillar dealer for more information.
Steam clean the core in order to remove any residue. Flush the fins of the core. Remove any other trapped debris.
Wash the core with hot, soapy water. Rinse the core thoroughly with clean water.
Personal injury can result from air pressure.Personal injury can result without following proper procedure. When using pressure air, wear a protective face shield and protective clothing.Maximum air pressure at the nozzle must be less than 205 kPa (30 psi) for cleaning purposes.
Dry the core with compressed air. Direct the air in the reverse direction of the normal flow. Note: The test pressure for the oil cooler is 790 kPa (115 psi). The maximum differential pressure of water for the aftercooler is 44 kPa (6 psi). The maximum differential pressure of air for the aftercooler is 5.1 kPa (0.74 psi).
Inspect the core in order to ensure cleanliness. Pressure test the core. Many shops that service radiators are equipped to perform pressure tests. If necessary, repair the core.
Install the core. For the procedure, refer to the Service Manual, "Disassembly and Assembly" module. For more information on cleaning the cores, consult your Caterpillar dealer.Exhaust Bypass
Inspect the condition of the exhaust bypass (if equipped). Recondition the component, if necessary. Refer to this Operation and Maintenance Manual, "Exhaust Bypass - Inspect" topic (Maintenance Section).Governor
Inspect the governor for proper operation. Make any repairs that are necessary.Transformers
The transformers produce a voltage increase. For good operation, the connections must be clean and secure. Inspect the transformers for the following conditions:
Dirty insulator
Loose connections
Loose connector
MoistureTest the resistance of the transformers according to the Service Manual, "Specifications" module. Consult your Caterpillar dealer for assistance.