HPU200 Hydraulic Power Units
Kobelt Manufacturing Co. Ltd.
Rev B
MNL-HPU200
12 of 36
A shut-off, or isolation, valves are strongly recommended for all three lines to provide
isolation in case of pump set failure.
Ensure the plugs remain in place until the unit is ready for
connection.
All piping and hoses must be flushed prior to connection. Failure to
do so can result in damaged components and seals.
The two hydraulic ports on the valve block are fitted with
3/8”
NPT (National Pipe Thread)
adapters. If preferred, the adapters can be removed, and connections can be made directly
to the valve blocks -06 SAE ORB ports. When installing the hydraulic fitting in the
3/8”
NPT
port a pipe thread sealant such as Teflon paste must be used.
All hoses and piping must also be plugged or capped until ready for
connection.
The piping to the steering cylinder should be 3/8” nominal size and no
more than 1/2
” with a
suitable wall thickness to safely withstand the operating pressure. The Port and Starboard
steering lines should have a pressure rating of 1000 psi minimum. Secure the piping against
vibration with pipe clamps spaced every 3 feet [1 m].
The connections to the hydraulic manifold must be made by hoses of suitable rating to
accommodate any movements, vibration or thermal strain.
