Maintenance and Service
Diesel engine
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7.1.3.5 Microorganisms in the fuel system
Occasionally, at first inexplicable blocks in the fuel system are found. These blocks
are often caused by microorganisms.
These microorganisms (bacteria, fungi, yeast) can grow rapidly under favourable for
them conditions. Water, which as condensing water is found in every storage or vehi-
cle (fuel) tank, and vital elements in chemically bound form, like sulphur, phosphor,
nitrogen, oxygen and trace elements are necessary for growth. Fuel additives may
also contribute to microorganisms' growth.
Depending on the temperature, growth is more or less strong, which leads to the for-
mation of fibrous mushroom meshes (mycelium) and sludge. The consequences are
blocks of the fuel prefilter by rust and fibres (mycelium) and frequent filter exchange. It
leads to a power losses of the engine and in extreme cases to breakdown of the vehi-
cle.
Remedial measures
If infestation with microorganisms is found in storage or vehicle (fuel) tanks, then we
recommend the following disinfecting agents to fight it:
Product: GrotaMar 82 ROPA item no. 435006000 (1.0 l)
Manufacturer: Schülke & Mayr
D-22840 Norderstedt
Phone: 040/52100-0
Fax: 040/52100-244
Internet: www.schuelke.com
E-mail: sai@schuelke.com
In case of need, please contact the manufacturer (for instance to enquire about
sources abroad). Consumption - 0.5-1.0 l per 1000 l of diesel fuel.
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