Doosan DL160, Operation And Maintenance Manual

Page: 205 / 236

OP000756
4-75
Inspection, Maintenance and Adjustment
HYDRAULIC PRESSURE
CHECKS
Hydraulic pressures for most systems can be check by using the
remote test ports shown in Figure 107.
Main Pump Pressure
1. Remove access cover (Figure 108) from front frame.
2. Attach gauge to (Port 1, Figure 107).
3. Relief cartridge for main pump must open at 195 - 205 kg/
cm
2
(2770 - 2900 psi).
4. To adjust pressure, use screw on relief valve cartridge
(Figure 109), loosen lock nut and turn screw clockwise to
raise relief pressure. Turn screw counterclockwise to lower
relief pressure.
5. Tighten lock nut after pressure has been adjusted.
Figure 107
Port Number Description Specification
1 Steering Pump Pressure 175 ± 5 Bar
2 Main Pump Pressure 200 ± 5 Bar
3
Transmission System
Pressure
16 ~ 18 Bar
4 Brake Charge Pressure 120 ~ 140 Bar
Figure 108
Figure 109