Fayat Bomag BW 900-50, Service Manual

Page: 125 / 245

2. Connect a 600 bar pressure gauge to the pressure test port
on the vibration valve Ä Fig. 118.
3. Start the engine and shift the throttle lever to max. speed
position.
4. Switch the vibration on Ä Fig. 119.
ð
Nominal value
Start-up pressure = see technical data.
Operating pressure = see technical data.
If starting pressure is not reached, check
the vibration control valve block.
If the starting pressure is reached, but
the operating pressure is too low, you
should also check the leakage quantity of
the vibration motors.
If the operating pressure is too high, the
bearings for both vibrator shafts must be
checked.
5.5.6 Vibration pump high pressure test
Special tools
Hydraulic test case
NOTICE!
Perform measurements at operating temperature
of the hydraulic oil (40 °C).
Fig. 118
Fig. 119
Hydraulic system – Tests and adjustments
BW 900-50 128
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