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BJ5-615 Chapter 5: Maintenance 51 of 85
Checking and Adjusting of the Hydraulic System (see figure below)
1. Start the machine in automatic running mode and wait for approximately 20
minutes.
2. When the ram moves forward the pressure gauge (1) should indicate 0 – 30 bars
depends on the adjustment of the throttle check valves (2). (Also adjust the
speed of the ram with this valve.)
3. When the ram moves backwards the pressure gauge (1) should indicate 0 – 30
bars depends on the adjustment of the throttle check valves (2).
4. The pressure gauge (1) should indicate 50 – 70 bar at the change over point of the
hydraulic cylinders other wise the spill over hand wheel (3) should be adjusted.
5. The pressure gauge (4) should indicate a maximum of 2.5 MPa other wise the
screw of the sequence valve (5) has to be adjusted.
6. The ram should run upwards in less than 10 seconds, otherwise the throttle check
valve (2) has to be adjusted.
7. When pressure gauge at the oil filter (6) indicates >5 bar, the filter should be
replaced.
Figure: Checking and adjusting the hydraulic system
1
3
2
5
4 6