5 Maintenance
5.1 Maintenance task reference table [QL1], application group 3B
The maintenance tasks and intervals for this product are defined in the Maintenance Schedule. The
Maintenance Schedule is a stand-alone publication.
The task numbers in this table provide reference to the maintenance tasks specified in the Maintenance
Schedule.
Task
Option
Maintenance tasks
W0500
Check engine oil level.
(→ Page 73)
W0501
Visually inspect engine for leaks and general condition.
(→ Page 30)
W0502
Check intercooler drain(s).
(→ Page 30)
W0503
Check maintenance indicator of air filter.
(→ Page 30)
W0505
Check relief bores of water pump(s).
(→ Page 30)
W0506
Check engine for abnormal running noises, exhaust color
and vibrations.
(→ Page 30)
W0507
X Drain water and contaminants from fuel prefilter.
(→ Page 30)
W0508
X Check reading on differential pressure gage of fuel prefilter. (→ Page 30)
W1001
Replace fuel filter or fuel filter element.
(→ Page 62)
W1003
Check belt condition and tension, replace if necessary.
(→ Page 104)
W1006
Replace fuel injectors.
(→ Page 51)
W1008
Replace engine oil filter when changing engine oil, or when
the interval (years) is reached, at the latest.
(→ Page 75)
W1009
X Check layer thickness of the oil residue, clean out and re-
place filter sleeve. Accomplish together with every engine oil
change, at the latest.
(→ Page 76)
W1178
Replace pressure pipe neck in cylinder head.
(→ Page 58)
W1207
Check valve clearance, adjust if necessary. ATTENTION!
First adjustment after 1,000 operating hours on a new en-
gine and after 1,000 after each overhaul of the cylinder
heads.
(→ Page 48)
W1523
Check function of actuators and flaps.
(→ Page 72)
W1525
Replace sensor.
(→ Page 124)
W1526
Replace sensor.
(→ Page 122)
W1581
Replace impactors.
(→ Page 47)
W1636
Reset drift compensation parameters (CDC) and enter codes
of injectors (IIG).
(→ Page 57)
Table 4: Maintenance task reference table [QL1]
MS150117/01E 2014-10
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