NORAC UC4+BC+JD8A - Manual (Page 23)

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4.7 H
YDRAULIC
I
NSTALLATION
WARNING!
The hydraulic system creates very
high pressure. Before disconnecting
any hydraulic lines ensure all pressure
has been bled from the system.
When changing the boom hydraulic
hoses leave the booms in
TRANSPORT POSITION.
IMPORTANT:
Component failure due to oil
contamination is not covered under
the UC4+ Spray Height Control
system warranty. It is recommended
that a qualified technician does the
hydraulic installation.
4.7.1 Roll Cylinder Installation
1. Remove the link arm (silver adjustable
tube) connected between the parallel lift
frame and roll frame. See Figure 21
for the link arm location.
2. Install the roll cylinder (H75) in place of
the link arm (Figure 22). When doing
this the top pin in the link arm must be
replaced with the supplied pin (B18).
The snap ring on the existing pin can be
used.
Figure 21: John Deere Link Arm Location
3. Install the 6MB-6MOR (F12) fittings
into the cylinder.
4. Install the 4MOR-4FORX90 (F14)
fitting onto the cylinder fitting at the cap
end of the cylinder.
5. When the cylinder is installed the
bottom bolt must be tightened to 266
ft-lbs (350 Nm) and there should be no
slop or free-play on the bottom bolt or
the top pin. Any free movement will
drastically reduce the active roll
performance.
Link Arm
Position