MTU 20 V 4000 G23, Technical Publication

Page: 71 / 178

66 Maintenance
4.3 Maintenance tasks
Interval Qual-
ifica-
tion
[h] [a]
Item Maintenance tasks Task
QL1 Engine oil filter Replace oil filter when changing engine oil, or when the interval
(years) is reached, at the latest ( → Page 132).
W1008
QL1 Engine operation Check engine oil level ( → Page 51). W0500
Check engine visually for leaks and general condition. W0501
Check intercooler drain (if fitted) ( → Page 51). W0502
Check signal ring position of service indicator ( → Page 51). W0503
Check water pump(s) relief bores ( → Page 51). W0505
Check for abnormal running noise, exhaust gas color and vibrations
( → Page 51).
W0506
Drain water and contaminants at the drain cock of fuel prefilter (if
fitted) ( → Page 51).
W0507
Check reading on differential pressure gauge of fuel prefilter (if fitted)
( → Page 51).
W0508
QL1 Centrifugal oil filter Centrifugal oil filter (if fitted): Check layer thickness of the oil residue,
clean out and replace filter sleeve ( → Page 133).
W1009
QL1 Fuel filter Replace fuel filter or fuel filter element ( → Page 112). W1001
QL1 Valve gear Check valve clearance ( → Page 102). W1002
QL1 Belt drive Check drive belt condition and tension, replace if necessary
( → Page 148); adjust belt tension ( → Page 149).
W1003
QL1 Air filter Replace air filter ( → Page 122). W1005
QL1 Fuel injector Replace fuel injectors ( → Page 106). W1006
QL1 Cylinder chambers Perform endoscopic examination ( → Page 96). W1011
QL1 Crankcase breather Crankcase breather: Replace filter or filter element ( → Page 99). W1046
QL3 Exhaust turbocharger Overhaul turbocharger ( → Workshop Manual). W1038
QL3 Component maintenance Prior to maintenance work, drain coolant and flush coolant circuits. W2000
Check rockers and valve bridge for wear. Visually inspect swing
follower and camshaft running faces with endoscope through pushrod
bore ( → Workshop Manual).
W2001
Clean air system ( → Workshop Manual). W2002
Clean intercooler and check for leaks ( → Workshop Manual).
W2003
Replace fuel HP sensor ( → Workshop Manual). W2004
Check engine coolant thermostat and replace thermostat element
( → Workshop Manual).
W2006
Check charge-air coolant thermostat and replace thermostat element
( → Workshop Manual).
W2007
Overhaul engine coolant preheating (if fitted) ( → Workshop Manual). W2008
Check centrifugal oil filter for wear (if fitted) ( → Workshop Manual).
W2009
Overhaul starter ( → Workshop Manual). W2010
M015715/00E 06-08 © MTU