Mounting; Replacing Cylinder In The Folding Model - DAL-BO Dinco 2000 Manual

Replacing cylinder in the folding model

Fig. 22
1. Empty the cylinder for oil by moving the piston gently back and forth.
2. Move the piston to the middle position and unscrew the end cap (pos. 3) of
the cylinder pipe (pos. 1). Special tools are required for removing the end
cap. If the end cap is very tight try heating up the front part of the socket.
When the end cap has been removed from the cylinder pipe pull out the
piston towards the end cap whereupon the piston rod (pos. 2) can be pulled
from the cylinder pipe (pos. 1).
3. Pull the piston rod backwards from end cap. There is now access to the
seals in the end cap.
4. Remove the metal ring (pos. 8) from the piston rod.
5. Remove the seals (pos. 4+5+6+7) from the end cap.
6. Clean all parts and check for chips, burrs etc. Check for corrosion around
the scraper ring (pos. 4) in the end cap. If corrosion is found it should be
removed. Moreover the piston rod should be completely clean.

Mounting

1. Mount new seals in the end cap and fit a new metal ring on the piston rod.
2. Lubricate the thread on the end cap (pos. 3) along with the seals and the
piston rod (use hydraulic oil) to facilitate the mounting.
3. Mount the end cap (pos. 3) on the piston rod (pos. 2) by pushing the piston
rod eye first through the end cap.
4. Lubricate the cylinder pipe on the inside and push the piston rod into
middle position.
5. Mount the end cap and tighten.
6. Mount the cylinder. Mount the hoses. Please note the hoses are squeezed
and that the connections are not worn down.
Unfold side sections and remove pressure from the cylinder. Remove system
pressure by putting the lever on the tractor into floating position when
unfolding after the side sections has passed the vertical position on their way
down. Side sections will slowly lower to horizontal position as oil leaks back to
the tractor. In this way no pressure will arise on the pilot controlled single
acting valve and there will be no pressure in the system.
Please note that different lengths of cylinders exist for the model 380 and the
models 470 and 560 respectively. The difference, however, is just the longer
cylinder bottom. The inside designs of the cylinders are the same.
Dinco
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