5.4.9. Trouble cause diagnosis and remedy Maintenance of Major Components - 139 - Condition Causes Remedies 1. Exhaust gas excessive 1) Air cleaner elements clogged 2) Air Inlet port clogged 3) Air leaks from air intake system 4) Turbocharger impossible to rotate due to stuck 5) Turbine wing’s contact 6) Piping deformation or clogging of exhaust system Replace or clean Inspect or repair Inspect or repair Overhaul and repair or replace Overhaul and repair or replace Inspect and repair 2. White smoke excessive 1) Oil leaks into turbine and compressor. 2) Seal ring’s abnormal wear or damage Overhaul and repair or replace Overhaul and repair or replace 3.
Output lowered 1) Gas leak from various parts of exhaust system 2) Air cleaner’s elements clogged 3) Turbocharger’s pollution or damage 4) Air leaks from discharge part of compressor side Inspect and repair Replace or clean Overhaul and repair or replace Inspect and repair 4. Abnormal noises or vibrations 1) Revolving part’s contact 2) Revolving imbalance of rotor 3) Stuck 4) Various connections loose Overhaul and repair or replace Overhaul and repair or replace Overhaul and repair or replace Inspect and repair