COMPONENT OPERATION / Pump Device
T3-1-4
REGULATOR
The regulator controls flow of the main pump by
receiving various kinds of signal pressure.
The regulator includes spring (1), sleeve 1 (2), sleeve 2
(7), spool 1 (3), spool 2 (6), piston (4), load piston (5),
inner spring (8) and outer spring (9).
The regulator opens and closes the circuit to servo
piston 1 (10) by receiving various kinds of signal
pressure, and controls delivery flow of the pump by
changing the displacement angle of swash plate (11).
NOTE: Primary pilot pressure (Pg) is always
applied to servo piston 2 (12).
T4GB-03-01-006
Pd1 - Own Pump Pressure
Pi1 - Pump Control
Pressure 1
ST - Pump Torque Control
Pressure
Pi2 - Pump Control
Pressure 2
T -
Returning to Hydraulic
Oil Tank
Pg - Primary Pilot
Pressure
(From Pilot Pump)
3
2
1
4
5
Pi1
T
Air
Vent
Pi2
Pg
T
ST
Pd1
T
Increase
Decrease
Displacement Angle
7
6
10
12
8, 9
Summary of Contents for ZW180
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Page 8: ...4GDT 1 2 Blank ...
Page 10: ...GENERAL Specification T1 1 2 Blank ...
Page 38: ...GENERAL Component Specifications T1 3 14 Blank ...
Page 39: ...MEMO ...
Page 40: ...MEMO ...
Page 42: ...4GDT 2 2 Blank ...
Page 56: ...SYSTEM Control System T2 1 14 Blank ...
Page 82: ...SYSTEM Control System T2 1 40 Blank ...
Page 92: ...SYSTEM Control System T2 1 50 Blank ...
Page 106: ...SYSTEM Control System T2 1 64 Blank ...
Page 116: ...SYSTEM ECM System T2 2 10 Blank ...
Page 128: ...SYSTEM Hydraulic System T2 3 12 Blank ...
Page 147: ...SYSTEM Hydraulic System T2 3 31 Blank ...
Page 150: ...SYSTEM Hydraulic System T2 3 34 Blank ...
Page 184: ...SYSTEM Electric System T2 4 34 Blank ...
Page 185: ...MEMO ...
Page 186: ...MEMO ...
Page 195: ...COMPONENT OPERATION Pump Device T3 1 7 Blank ...
Page 212: ...COMPONENT OPERATION Control Valve T3 2 4 T4GB 03 02 003 1 2 3 4 5 7 8 9 10 11 7 6 ...
Page 214: ...COMPONENT OPERATION Control Valve T3 2 6 T4GB 03 02 003 1 2 3 4 5 7 8 9 10 11 7 6 ...
Page 226: ...COMPONENT OPERATION Control Valve T3 2 18 Blank ...
Page 232: ...COMPONENT OPERATION Control Valve T3 2 24 Blank ...
Page 248: ...COMPONENT OPERATION Steering Pilot Valve T3 4 6 Blank ...
Page 258: ...COMPONENT OPERATION Steering Valve T3 5 10 Blank ...
Page 274: ...COMPONENT OPERATION Pilot Valve T3 6 16 Blank ...
Page 282: ...COMPONENT OPERATION Pilot Valve T3 6 24 Blank ...
Page 299: ...COMPONENT OPERATION Ride Control Valve T3 8 5 Blank ...
Page 306: ...COMPONENT OPERATION Ride Control Valve T3 8 12 Blank ...
Page 348: ...COMPONENT OPERATION Drive Unit T3 9 42 Blank ...
Page 371: ...MEMO ...
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