MTU 20 V 4000 C22 Operations Instructions Page 46
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Fault code Alarm text Meaning Task
065 L1 P-FUEL Fuel supply pressure too
low (1st limit)
1. Check fuel lines for leaks; repair
defective lines.
2. Clean fuel prefilter
3. Flush fuel prefilter
4. Replace filter element of fuel
prefilter.
5. Fuel filter replacement
(→ Page 86).
6. If fault is not rectified: Contact
Service.
066 L2 P-FUEL Fuel supply pressure too
low (2nd limit)
1. Check fuel lines for leaks; repair
defective lines.
2. Clean fuel prefilter
3. Flush fuel prefilter
4. Replace filter element of fuel
prefilter.
5. Fuel filter replacement
(→ Page 86).
6. If fault is not rectified: Contact
Service.
067 L1 T-COOLANT Coolant temperature too
high (1st limit). Warning
Reduce power.
068 L2 T-COOLANT Coolant temperature too
high (2nd limit).
Automatic engine shut‐
down.
1. Allow the engine to cool down.
2. Check coolant cooler (elements
etc.) and clean contaminated
parts (see manufacturer's docu‐
mentation).
3. Re-start the engine
(→ Page 35).
4. If fault occurs repeatedly: Con‐
tact Service.
081 RAIL LEAKAGE HP fuel system leaking,
system contains air
Contact Service.
082 RAIL PRESSURE
HIGH
Pressure in HP fuel system
exceeds specified value;
Solenoid valve of HP fuel
control block jamming or
wiring to solenoid valve de‐
fective
Contact Service.
083 RAIL PRESSURE
LOW
Pressure in HP fuel system
lower than the specified
value;
HP fuel control block de‐
fective or system leaking.
NOTE:
With very large generators
having a run-out time of
more than > 20 sec this
alarm is not a relevant
fault.
Contact Service.
087 L1 LEV. WATER IN
FUEL
Water level in fuel prefilter
too high
Check fuel prefilter
46 | Troubleshooting | M015675/05E 2011-10
TIM-ID: 0000003161 - 001
- Operating Instructions 1
- Commissioning Note 3
- 1 Safety 7
- Personnel requirements 8
- Organizational measures 8
- 1.3 Transport 9
- Transport 10
- TIM-ID: 0000004012 - 001 11
- Engine operation 12
- Work with laser devices 15
- Fire prevention 16
- Fluids and lubricants 16
- Used oil 16
- Compressed air 17
- Painting 17
- Liquid nitrogen 17
- Acids/alkaline solutions 17
- Safety instructions 18
- 2 General Information 19
- 2.2 Engine layout 20
- TIM-ID: 0000002072 - 002 21
- TIM-ID: 0000012921 - 002 23
- 1 B13 (N-Crankshaft) 25
- COMBUSTION AIR / EXHAUST GAS 28
- COOLING SYSTEM (HT circuit) 28
- COOLING SYSTEM (LT circuit) 28
- LUBE OIL SYSTEM 29
- FUEL SYSTEM 29
- GENERAL OPERATING DATA 29
- CAPACITIES 30
- WEIGHTS / MAIN DIMENSIONS 30
- ACOUSTICS 30
- 3.2 Firing order 31
- 3.3 Main engine dimensions 32
- 4 Operation 33
- Preparation 35
- Starting the engine 35
- 4.4 Operational checks 36
- Shutting the engine down 37
- 4.6 After stopping the engine 38
- 4.7 Plant – Cleaning 39
- 5 Maintenance 40
- 6 Troubleshooting 41
- TIM-ID: 0000002541 - 001 42
- 6.2 ECU 4 alarms 44
- TIM-ID: 0000003161 - 001 45
- 7 Task Description 56
- Barring engine manually 57
- (installation on lower side) 57
- TIM-ID: 0000000950 - 002 58
- TIM-ID: 0000003285 - 003 61
- 7.3 Crankcase Breather 63
- TIM-ID: 0000003534 - 003 64
- TIM-ID: 0000003532 - 001 67
- Grounding device 69
- (→ Spare Parts Catalog) 69
- 7.5 Valve Drive 70
- Checking valve-bridge balance 72
- TIM-ID: 0000004355 - 001 73
- Adjusting valve clearance 75
- Removing cylinder head cover 76
- 7.6 Injection Pump / HP Pump 77
- 7.7.1 Injector – Replacement 78
- Removing injector 80
- TIM-ID: 0000000952 - 003 81
- 7.8 Fuel System 85
- 7.9 Fuel Filter 86
- Draining fuel prefilter 88
- 7.10 Charge-Air Cooling 89
- 7.11 Air Filter 90
- Visual inspection 91
- TIM-ID: 0000000903 - 003 92
- Checking signal ring position 94
- 7.12 Starting Equipment 95
- TIM-ID: 0000006161 - 003 96
- 7.14 Oil Filtration / Cooling 98
- Oil filter candles – Removal 99
- TIM-ID: 0000006401 - 002 100
- Checking strainer 102
- Cleaning strainer 102
- Installing strainer 102
- Preconditions 103
- TIM-ID: 0000000934 - 007 104
- Fill with engine coolant 106
- Drain engine coolant 106
- Preparatory steps 107
- Engine coolant – Draining 107
- Filling coolant with pump 109
- Final steps 109
- Coolant filter – Replacement 112
- 7.16 Low-Temperature Circuit 113
- Drain charge-air coolant 114
- Fill with charge-air coolant 114
- Charge-air coolant – Draining 115
- TIM-ID: 0000000964 - 003 118
- Battery-charging generator – 120
- Adjusting belt tension 122
- Checking drive belt tension 123
- Drive belt replacement 124
- 7.19 Fan Drive 125
- Adjusting drive belt tension 126
- Replacing drive belt 127
- 7.20.1 Engine wiring – Check 128
- TIM-ID: 0000000948 - 004 129
- Engine governor plug-in 130
- 8 Appendix A 131
- TIM-ID: 0000000858 - 007 132
- Local support 134
- 24h hotline 134
- Spare parts service 134
- 9 Appendix B 135
- DCL-ID: 0000014250 - 001 136
- 9.2 Index 138
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