Component
Function
Daily
A250
A500
A1000
A1500
A2000
A3000
A6000
A36000
See chapter
Note
Check antifreeze concentration.
X
Engine
SM
Change the coolant.
X
Engine
SM
Fill up the fuel tank.
X
Empty the fuel prefilter water
trap.
X
Clean the fuel filter.
X
Engine
SM
Have the fuel pump cleaned.
X
SW
Clean the tank fuel strainer.
X
Clean the fuel tank.
X
Check fuel lines and hose clamp‐
ing bands, replace if necessary.
X
SW
Change the fuel prefilter.
X
Engine
SM
Replace the fuel filter.
X
Engine
SM
Check the fuel return line for leak‐
age and firm fixing.
X
Have the fuel injectors checked.
X
SW
Have the fuel injector pump
checked.
X
SW
Check the battery electrolyte lev‐
el and connections.
X
Have an electronic test made on
the injectors.
X
SW
Compressor unit
Check inlet air filter maintenance
indicator.
X
Check the cooling oil level.
X
Clean the compressor air filter.
X
Clean the oil cooler.
X
Have the pressure relief valve(s)
checked.
X
Check/clean the oil separator
tank dirt trap.
X
Change engine air filter.
X
Engine SM = engine manufacturer's service manual; SW = specialized workshop.
10 Maintenance
10.3 Maintenance schedules
100
Service Manual Screw Compressor
M135 SIGMA CONTROL MOBIL
No.: 9_6975 00 E