horsch Pronto 40 DC, Owner'S Manual, Page: 73 / 76

Pronto 40 DC Owner’s Manual – Ver. 1.0 04/2017 73
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provide several months of protection, but for a machine used only one season a year, it may be necessary
to renew the grease every three to four months.
Hydraulic cylinders can be ruined by pit rust if left extended and not protected. They are expensive to
replace. You can protect your cylinders by (a) storing them in a retracted position, (b) storing them inside
or (c) coating any exposed portion of the rods with heavy grease.
Protection of new equipment:
The steps summarized below should be followed when protecting chrome plate shafting on new
equipment.
•
Position the equipment as it will be stored, and identify all the exposed portions of the chrome plated
shafts.
•
Clean dirt and dust from the exposed portions of the shafts using a dry cloth.
•
Apply a thin coating of PRP mixture to the exposed surfaces of the chrome shaft. Depending on the
type of PRP used, it can be applied directly to the shaft either by spray or rubbed on to the surface.
•
Inspect the shaft surface after 5 month and apply additional corrosion protection PRP.
•
If the equipment is to be moved and then stored again for an extended period of time, the steps above
should be repeated for all shafts that were stroked or cycled during the move.
Protection of older equipment:
•
Occasionally it might be necessary to store some equipment that has seen some service. The
procedure described above can be useful, but more careful cleaning of the shaft surface should be
taken into consideration. If there are any damaged areas to the shaft further attention will be required.
•
Under no circumstances should sandpaper or other abrasive materials be used to clean the shaft,
however, plastic or copper wool may be used.
•
After the surface is clean, it should be inspected for damages to the chrome plate. If damage is
detected, more frequent application of PRP will be necessary to prevent corrosion during storage.