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Doosan Mega 500-V - Page 176

Doosan Mega 500-V
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4-54 Inspection, Maintenance and Adjustment 022-00029AE Operation and Maintenance Manual
TRANSMISSION SYSTEM PRESSURE
1. Attach gauge to (Port 2, Figure 93)
2. Pressure 16-18 kg/cm
2
(228-256 psi)
BRAKE CHARGE PRESSURE
1. Attach gauge to (Port 3, Figure 93).
2. Relief pressure for unloading is 140 kg/
cm
2
(1,991 psi). Relief pressure for loading
is 120 kg/cm
2
(1,707 psi).
PILOT CONTROL VALVE LEVER (JOYSTICK)
ACTIVATION PRESSURE
1. Attach gauge to (Port 4, Figure 94).
2. Adjust relief cartridge (Figure 97) on pilot
parking valve. Relief pressure should be
set at 37 kg/cm
2
(526 psi).
3. Loosen lock nut on adjusting screw. Turn
adjusting screw clockwise to raise relief
pressure. Turn adjusting screw
counterclockwise to lower relief pressure.
4. Tighten lock nut after adjustment has been
made.
STEERING PUMP PRESSURE
1. Attach gauge to steering valve port,
(Figure 94).
Figure 96
Figure 97
+3
-2
+43
-28
Figure 98

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