Ammann AVH 5020 Originalbetriebsanleitung Seite 53

6.7.3 Changing the return filter element
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• Loosen the filter cover (1) with a screwdriver (SW 27) and un-
screw. Permit the oil in the filter housing to run through the fil-
ter element (3) and into the tank.
• Lift the filter element with a screwdriver and withdraw it to-
gether with the filter head from the head section.
• Remove the filter element by turning and pulling it at the same
time from the filter head and dispose it in an environment
friendly manner.
• Drain the remaining oil from the filter head into an old oil con-
tainer and dispose it in an environment friendly manner.
• Clean the filter head with washing petrol or diesel oil.
• Check the surface seal (2) and O-ring and if necessary
change them.
• Insert a new filter element in the filter head.
• Install the filter head with filter element into the head part; tak-
ing care with the O-ring.
• Screw on the filter cover and pull tighten with hand, check for
a trouble-free location of the surface seal.
• Take a test-run if the filter is tight.
6.7.4 Hydraulic oil change
1
2
3
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Care is to be taken with the draining of hot oil :
danger of scalding !
Wear protection spectacles - danger of eye injury!
Danger
• Open the oil fill screw (2) and the oil drain screw, drain off the
oil and dispose it in an environment friendly manner.
• Remove the cover (3).
• Release the input filter (4) in the tank and unscrew.
• Wash out the intake filter in cold cleaner or washing petrol and
blow out with compressed air.
• Thoroughly clean the hydraulic tank.
• Insert the intake filter.
• Carefully remove the seal remains from the seal surfaces.
• Fit new sealing compound.
• Fit the hydraulic tank cover
• Screw-in the oil drain screw, if necessary use a new seal.
• Replace the air filter (1) taking care with the O-ring.
• Fill-in new oil
For oil quantity and type see the lubrication plan.
• Screw in the oil fill screw and pull tighten (if necessary use a
new seal).
• Take a test run, check the oil level and if necessary top up.
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6. Maintenance
1
2
3
4