Citytrac 4200
Citymaster 1200
Citycleaner
Service Documents
For internal use only
Status
March 2009
Page
3 of 108
5.0 Hydraulic Installations
5.1 Safety regulations 31
5.2 Hydraulic pumps 32
5.2.1 Overview of pump locations 32
5.2.2 Variable displacement pump 33
5.2.3 Technical data 35
5.2.4 Hydraulic pump description 36
5.2.5 Flush valve 37
5.2.6 Gear pump, ZP1 39
5.2.7 Gear pump, ZP2 39
5.3 Traction drive 40
5.3.1 System diagram 40
5.3.2 Differential lock valve 43
5.3.3 Switching valve, working/transport mode 46
5.4 Work hydraulics 50
5.4.1.1 Valve manifold, old 50
5.4.1.2 Valve manifold, new 51
5.4.1.3 Torque, valve manifold 52
5.4.1.4 Measure values solenoid valves 53
5.4.2.1 Valve manifold, system diagram, old 55
5.4.2.2 Valve manifold, system diagram, new 56
5.4.3 Function description, valve manifold 57
5.4.4 Proportional throttle cartridge 60
5.4.5 Functions, system diagram 61
5.4.6 Proportional valve control unit 66
5.4.7 Hydraulic connections for front attachment devices 68
5.4.8 Rear connections 69
5.5 Citycleaner hydraulics 70
