2
4 Winch basics ................................................................................................. 29
4.1 Hydraulic System Basic Information............................................ 29
4.1.1 General .................................................................................................... 29
4.1.2 Outline Diagram for Installation of Winch Hydraulics........... 30
4.1.3 Hydraulic Oil .......................................................................................... 32
4.1.4 Power Supply ........................................................................................ 33
4.1.5 Hydraulic Function Diagram............................................................ 34
4.1.6 Pressure setting of the control valve PVG32........................... 44
4.2 How to calculate required pulling force ...................................... 46
4.3 How to improve rope spooling ....................................................... 48
4.4 Wire rope selection............................................................................. 49
4.5 Dimensioning of rope sheaves ...................................................... 52
4.6 Rigging instructions ............................................................................ 53
5 Operating instructions............................................................................ 59
5.1 General .................................................................................................. 59
5.2 Pull out rope.......................................................................................... 61
5.3 Attaching the load ............................................................................. 63
5.4 Engage the rope drum ..................................................................... 64
5.5 Pull the load ......................................................................................... 65
5.6 Unhook the load.................................................................................. 66
5.7 Spool the rope back on the drum................................................. 67
6 Maintenance ................................................................................................ 68
6.1 Gear drive ............................................................................................. 68
6.2 Drum brake .......................................................................................... 69
6.3 Service and maintenance ................................................................ 71
6.4 Free-spool clutch ............................................................................... 79
6.5 Wire rope .............................................................................................. 81
7 Troubleshooting ......................................................................................... 82
8 Technical information ............................................................................. 86
8.1 General .................................................................................................. 86
8.1.1 Noise........................................................................................................ 86
8.1.2 Vibration ................................................................................................. 86
8.2 Design standard................................................................................... 86
8.3 EC declaration of conformity........................................................... 89
