Columbia Concrete Products
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HYDROSTATIC PUMP
FINE ADJUSTMENT
The only time fine adjustment would be made is if electrical pin
has been disconnected and vibrator is still slightly rolling over.
Look at the acceleration and deceleration gauges. These will be the two outside gauges.
You will notice that at this time one of the gauges will have a higher reading then the
other.
With electrical pin connector disconnect from EP controller insert flat tip screwdriver into
adjustment screw slot and hold adjustment screw from turning while breaking jam nut
loose. While making your adjustment watch the gauges and with very slight adjustment
right or left of the adjustment screw you will notice one of the gauges increase in
pressure. Turn the adjustment screw the opposite direction and the other gauge will
start to increase in pressure. Turn the adjustment screw back until both gauges read
the same pressure. At this time hold the adjustment screw and lock the lock nut down.
Again check the gauges to make sure pressure are the same. Some times it may be
necessary when locking down the lock nut you may need to slightly turn the adjustment
screw back so when locking the lock nut down your pressures will be equal.
At this time your vibrator should not be rolling over.
If the vibrator is still rolling over and you cannot equal the pressures on both gauges you
will need to make adjustment to the course adjustment to center the pump and then
return to the fine adjustment procedures again once you have completed the course
adjustments.
NOTE
For fine adjustment
jam nut and slotted
screw is located here.