HYDRAULIC INSTALLATION
Hydraulic installation kits are available for virtually all compatible backhoe loaders and
excavators from the manufacturer.
Complete parts and instructions for NPK hydraulic installations including valves and/or
controls, hoses and fittings, boom and stick tubing and clamps can be provided.
See your NPK dealer for details or call NPK direct at (440) 232-7900.
BACKHOE/EXCAVATOR COMPACTOR LINES
Typically, the pressure line should be arranged on the left side of the boom and routed
to the compactor “IN” port (6) and the return is routed from the compactor “OUT” port
(5) on the right side. Flow to the compactor is controlled from the carrier’s auxiliary
valve or from an NPK supplied flow valve. Hydraulic oil is generally routed back to the
tank through the carrier’s oil cooler and filter. NOTE: Do not route return oil through the
carrier’s auxiliary valve.
SHUT-OFF VALVES
Most NPK Hydraulic Installation kits use two shut-off valves (k4) on the dipper stick (k1)
of the carrier. These valves control the hydraulic oil going to the pressure side (m3) and
returning (m4) from the Compactor/Driver. NOTE: Some smaller carriers utilize a
check valve on the return side.
Pressure test ports (k8) are located in the shut-off valves (and check valves). Each
shut-off valve has an “ON” (k5) and an “OFF” (k6) position.
To Next Page
Loading...