Operation Manual / A130-H.. - A140-H..
8 Eliminating malfunctions / 8.2 Malfunctions during operation
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HZTL4030_EN
Rev.G
July 2021
Charge air pressure too high
Engine performance and engine speed unchanged, suction condition normal
Possible causes
Remedy
Turbochar-
ger
Manometer display not correct
Replace manometer
Increased speed due to contamination
of nozzle ring
bocharging Service Station
Engine
Malfunction in the injection system
Repair or contact manufacturer
Injection mistimed
Set correctly
Engine performance higher than indic-
ated
Check engine performance
Table 23: Malfunctions during operation – Charge air pressure too high
Reduced compressor performance/efficiency and therefore engine performance
losses
CAUTION
Compressor damage
A severely contaminated or corroded compressor wheel can reduce the com-
pressor wheel’s fatigue endurance limit and result in the turbocharger being
damaged.
u
Rectify malfunction in accordance with the following table.
Possible causes
Remedy
Turbochar-
ger
Compressor components severely con-
taminated by the ventilation gases that
have been fed in
Optimize oil separation
Increased blade vibration, compressor
blade damage due to the ventilation
gases that have been fed in
Correct the feed of ventilation gases ac-
cording to instructions of engineb-
uilder.
Material of the compressor wheel cor-
roded due to the feeding in of ventila-
tion gases containing corrosive com-
ponents
Correct the feed of ventilation gases ac-
cording to instructions of engineb-
uilder.
Material of the compressor wheel cor-
roded due to intake air containing ex-
haust gases or salt
Prevent exhaust gas leakages in the en-
gine space
Clean (see chapter
Table 24: Malfunctions during operation – Engine performance losses
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