HYDRAULIC INSTALLATION
HYDRAULIC QUICK DISCONNECTS
NPK recommends against the use of non-NPK quick disconnects on hydraulic
circuits operating NPK Products.
1. Compactor/Driver operation can cause internal pieces of a non-NPK quick
disconnect (32) to disintegrate. These pieces would migrate into the
Compactor/Driver hydraulic motor, causing damage.
2. If quick disconnects are used when the Compactor/Driver is removed from the
excavator, the quick disconnects should be capped to keep them clean. If this is not
done, contamination in the disconnect will be flushed into the Compactor/Driver
when re-connected. This, again, can cause damage.
3. Most quick disconnects create a restriction in the circuit. NPK Compactor/Drivers
are back pressure sensitive. Restrictions can cause damage to the hydraulic motor.
Also, the pressure required to operate the Compactor/Driver, plus the restriction in
the disconnects may push an older, low pressure, carrier machine to the limit of its
hydraulic system. This would interfere with proper Compactor/Driver operation.
However, the NPK approved quick disconnects are properly sized so that the
Compactor/Driver operation is not affected.
To Next Page
Loading...