Output Decrease; Table 11-3 Output Decrease - Mitsubishi S6B3 Operation & Maintenance Manual

Chapter 11 TROUBLESHOOTING

Output Decrease

Cause
Improper fuel property
Clogged fuel filter
Fuel system Faulty fuel injection timing
Improper amount of injected fuel
Faulty fuel feed pump
Cooling
Overheat, overcooled
system
Insufficient amount of air
Inlet and
exhaust
systems
Increase resistance of exhaust air.
Low compression pressure
Basic engine Faulty valve timing
Wear of sliding parts
Control
Faulty governor control
system
Note: The table above also include the parts Mitsubishi Heavy Industries, Ltd. does not supply. For the parts Mitsub-
ishi Heavy Industries, Ltd. does not supply, inspect and maintain them following the manufacturer's operation
manual.
11-4

Table 11-3 Output Decrease

Use appropriate fuel.
Inspect and replace fuel filter.
Clean gauze filter.
Check fuel injection pump couplings.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Check fuel injection pump rack stroke.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Check fan and heat exchange equipment.
Check control system.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Check turbocharger.
Clean, inspect and replace air cleaner element.
21)
Check intake air pressure and leakage of intake air.
Check intake air temperature and ventilation device.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Check turbocharger.
Check exhaust pipes and silencer.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Remedies
(Refer to P4-1)
(Refer to P8-9)
(Refer to P8-8)
(Refer to P8-19)
(Refer to P8-19)
(Refer to P8-