Norac SPRA-COUPE 7000 Series, Installation Manual, Page: 28 / 42

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4.5.2 Hydraulic Plumbing
WARNING!
The hydraulic system creates very high pressure that can injure. Before
disconnecting any hydraulic lines ensure that all pressure has been bled
from the system. When changing the boom hydraulic hoses leave the
booms in the TRANSPORT POSITION.
NOTE: From this point in the installation the booms will be inoperative
until the electronics are fully installed.
NOTE: You must also ensure there are no other orifices present in the
circuit between the NORAC valve block and the boom cylinders.
Some sprayers have orifices in the fittings at the boom cylinders.
1. After the NORAC valves are mounted to the sprayer, the hydraulic hoses and
fittings can be installed (plumbed). The plumbing for the hydraulic circuit is
shown schematically in
Figure 3.
2. The “B” ports leading from the NORAC valve block are the “raise” lines, and
must be connected to the boom raise cylinders via the existing lines and the “T”
fittings ( Item H6 ) provided, as illustrated in Figure 3. The “T” fittings are
inserted into the existing Spra-Coupe hydraulic circuit to allow the NORAC
Valve block to control the cylinders in parallel with the existing system.
3. NORAC supplies four new hydraulic hoses ( Item H3 ) to run to the “T” fittings
( Item H6 ).
4. Route the lines from the NORAC valve block to the “T” fitting which is inserted
at the junction of the steel hydraulic line and the hose of the Spra-Coupe circuit
( Figure 3).
5. Remove the existing Spra-Coupe Pressure and Tank lines from the Spra-Coupe
valve block and fit them to the NORAC Pressure (P) and Tank (T) ports, using
the “T” fitting (
Item H4 ). Attach the two hoses ( Item H2 ) to H4 .
6. Use the 90 degree 6MJ 6FJX90 fittings ( Item H5 ) to attach the other end of H2
to the Spra-Coupe Pressure and Tank ports ( Figure 22 ).