Great Plains
| 586-537Q-ENG | 04/26/2019
20
3500-4000TM
Assembly
Hose Handles
Refer to Figure 18
76. To distinguish hoses on the same hydraulic circuit, refer to
hose handles. The hose under an extended-cylinder
symbol feeds a cylinder base end. The hose under a
retracted-cylinder symbol feeds a cylinder rod end.
77. Once all hoses are tightened, hook hoses to tractor.
Purging Hydraulic System
When lift and fold hoses are routed and hooked up to
cylinders and valves the systems will need purged of air.
Purging the lift and fold system now will allow the wings
to be folded and unfolded. The machine may also be
raised up or down for ease of gang assembly installation.
Refer to Figure 19
78. Charge the lift system first. Extend the lift cylinders
(black handles) until the center section is fully raised.
Remove the cylinder transport locks and store on lift
straps . Raise and lower the lift system several times to
purge air from system. Watch for leaks and retighten
fittings if necessary.
79. You may now charge the fold system. Before charging the
inside wing, fold cylinders and outside wing (Model
4000 only), fold cylinders make sure the rod end of the
cylinders are un-bolted or un-pinned and block
is
placed under cylinders as shown, so that when the rod is
extended, it will clear the wing fold brackets. Extend the
fold cylinders and (green ends) completely and then
close them. Extend and retract the cylinders several times
to purge air from the system.
80. Now the rod end of fold cylinders and may be
hooked up to wings with the 1 x 3
1
8
usable pin , 1.5 x
1.0 x.075 machine washer and
3
16
x 2 cotter pin. Bend
cotter pin over to secure.
Figure 18
Hose Handles
41552
1
2
3
4
7
6
4
7
4
7
5
