5.1.4.4. Initial lowering
Figure 5.52. Hydraulic fluid flow during initial lowering 1.
The operator presses the initial lowering button. The proportional valve (M1) is closed and M3 is opened.
2.
The proportional valve (M1) opens to a predetermined value.
3.
The fluid flows through the flow restrictor back to the tank.
5.2. Hydraulic maintenance and repairs The following sections illustrate various hydraulic maintenance procedures not covered in Chapter 3 Regular maintenance.
5.2.1. Replacing gaskets NOTE
When the gasket of the hydraulic cylinder needs to be replaced, the wiper and guide strips are also replaced. To replace gaskets: 1.
142
Pull out the piston rod from the cylinder.
