MTU 12V4000M93 series, Руководство по эксплуатации

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Engine does not reach rated speed.
Cause Corrective action
Engine: Overload.
u
Reduce load.
Air filter clogged. 1. Check signal ring position of service indicator (→ Page 198).
2. Replace air filter (→ Page 196).
Fuel prefilter clogged. 1. Drain water and contaminants from fuel prefilter (→ Page 183).
2. Replace filter element (→ Page 187).
Easy-change fuel filter clogged.
u
Replace (→ Page 180).
Engine cabling faulty.
u
Check (→ Page 232).
Injector defective.
u
Replace (→ Page 172).
Engine speed not stable.
Cause Corrective action
Injector defective. u Replace (→ Page 172).
Speed sensor faulty. u Check and replace as necessary (→ Instructions for Exchange of
Sub-assemblies).
Engine Control Unit faulty. 1. Check plug connections (→ Page 237).
2. Replace Engine Control Unit (→ Page 240).
3. Contact Service.
Charge-air temperature too high.
Cause Corrective action
Engine: Overload.
u
Reduce load.
Air inlet temperature too high.
u
Check fans and air supply/ventilation ducts for engine room.
Incorrect engine coolant
concentration. 1. Check engine coolant level (→ Page 214).
2. Check engine coolant (MTU test kit) (→ Page 221).
Intercooler clogged. u Replace (→ Instructions for Exchange of Sub-assemblies).
Charge-air pressure too low.
Cause Corrective action
Air filter clogged. 1. Check signal ring position of service indicator (→ Page 198).
2. Replace air filter (→ Page 196).
Intercooler clogged. u Replace (→ Instructions for Exchange of Sub-assemblies).
Exhaust turbocharger defective. 1. Clean compressor wheel (→ Page 190).
2. Replace exhaust turbocharger (→ Instructions for Exchange of Sub-
assemblies).
Engine coolant escapes at intercooler.
Cause Corrective action
Intercooler leaky, major coolant
discharge.
u
Replace intercooler (→ Instructions for Exchange of Sub-
assemblies).
MS150047/05E 2018-08 | Troubleshooting | 117
TIM-ID: 0000044073 - 004