54
3. Mower lifting/lowering circuit
Oil is fed via the oil pump (9.08cc) in the HST unit to the priority valve, from which it is sent preferentially to the main
valve via the steering unit. (6 liters are supplied preferentially.)
This circuit is protected by a safety valve (relief valve) inside the steering unit that will open if the system is overloaded.
The relief valve in the steering unit also functions to protect against overload in the lifting/lowering system. [Pressure
setting: 5.39Mpa (55kfg/cm
2
)]
The SG280E uses a mechanical valve as the main valve for lifting and lowering the mower.
Fig.3-2-5
Mower lift cylinder
Summary of Contents for SG280E
Page 1: ...SLOPE MOWER 2011 4 MODEL SG280E...
Page 2: ...1...
Page 7: ...6 Body and operation areas 1 2 Overall view part names Fig 1 2 1 Fig 1 2 2...
Page 8: ...7 Fig 1 2 3 Total elapsed time Seat swing lever...
Page 10: ...9...
Page 14: ...11 Model N843 2 2 Cross section diagrams Fig 2 2 1...
Page 15: ...12 Model N843 Fig 2 2 2...
Page 53: ...50 HST 2WD 4WD 2WD 4WD 2WD 4WD 3 2 Functions Fig 3 2 1...
Page 59: ...56...
Page 60: ...56 Section 4 Electric Components 4 1 Layout diagram 4 2 Safety system electric components...
Page 109: ...105 Section 6 Wiring Diagram 6 1 Wiring diagram...
Page 110: ...106 6 1 Main circuit diagram...
Page 111: ...107 Fig 6 1 1...
