NORAC UC4.5-BC-HD1 - Manual (Page 25)

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8.4 Hydraulic Plumbing – Double Acting
From this point on in the installation the booms will be inoperative until the
hydraulics are fully installed.
1. After the NORAC valves are mounted, the hydraulic hoses and fittings can be plumbed
following the schematic in Figure 3.
2. Install the 90 degree fittings on hoses H01 onto the “A” and “B” ports on the NORAC
valve block. Route the free ends of the hoses to each of the wing tilt cylinders.
3. Remove the Hardi hoses from the “raise” line (“B” line) of the cylinder and remove the
restricted straight BSPP fittings. (Figure 21) Install the 4FBSPPX 6MJ fittings (F04) onto
hoses H01. Install NORAC and Hardi hoses onto the 4MBSPPT 4FBSPPRX tee (F05).
4. Remove the Hardi hoses from the “lower” line (“A” line) of the cylinder and remove the
restricted straight BSPP fittings. (Figure 21) Install the 4FBSPPX 6MJ fittings (F04) onto
hoses H01. Install NORAC and Hardi hoses onto the 4MBSPPT 4FBSPPRX tee (F05).
5. At the Hardi main valve block, remove the hydraulic hoses that run from the “raise” line of
the tilt cylinders to the valve block (Figure 20). Remove the fittings from between the
hoses and valve block.
6. Install the restrictor that was removed from the wing tilt cylinder between the hoses and
the valve block.
7. Install the fittings that were removed from the valve block between the cylinders and tee
fittings (F05).
8. Connect hoses H02 to the NORAC tank and pressure ports. Connect the free end of
hoses H02 to the existing tank and pressure quick couplers.
Figure 20: Location of Hoses on Hardi Valve Block
Eagle Boom Force Boom