Great Plains 148-152P Assembly Instructions - Manual (Page 3)

5/5/2009
Great Plains Mfg., Inc.
3 Installation Instructions
Hydraulic Assembly
NOTE: JIC fittings do not require high torque. JIC
and O-Ring fittings do not require sealant. Always
use liquid pipe sealant when adding or replacing
pipe thread fittings. To avoid possible danger of
cracking hydraulic fittings from overtightening -DO
NOT use plastic sealant tape.
Refer to Figure 4
1.
Mount sequence valve (1) on sequence valve mount
(2). Secure valve (1) on mount (2) with 3/8-16 X 1
bolts (3) and 3/8 lock washers (4).
2. U-bolt sequence valve mount (2) on hitch (6) using
1/2-13 X 8 1/16 X 9 u-bolt (5). Position sequence
valve (1) so four ports point to the rear of the imple-
ment and two ports face the tractor. Secure u-bolt
(5) with 1/2-13 nylock nuts (7).
3. If not already done, install a 9/16" male o-ring boss
x 9/16" male JIC adapter (8) into each end of both
hydraulic cylinders.
4. Install a 9/16" female JIC X 9/16" male JIC 90 degree
elbow (9) into each end of the marker cylinders.
5. Two more 9/16" female JIC x 9/16" male JIC 90 degree
elbows (9) are required on on the base end of the
marker cylinders to offset the hoses around the marker
rest post (10).
6. Route the 57" long hydraulic hoses (11) from the el-
bows (9) at the ports marked C1 & C2 on the sequence
valve (1) to the elbows (9) on the base ends of the
marker cylinders.
7. The 70" hoses (12) attach to the elbows (9) on the se-
quence valve (1) ports marked R1 & R2 and the el-
bows (9) on the rod end of the marker cylinders.
8. The two 156" hoses (13) attach to the remaining two
elbows (9) on the sequence valve (1) opposite the
marker ports and are routed to the hitch (6).
9. Tie all loose hoses together with cable ties provided.
24484
Figure 4
Hydraulic Hose Assembly