Great-plains PFH-20 Operator Manual User Manual download pdf (Page 13)

Section 1 Assembly and Setup

6/21/2004

PH-15, PH-20, PFH-15 and PFH-20 Coulter Command System 148-384M

Great Plains Mfg., Inc.

9. Connect a 36 inch long hose (10) to port “C1” of the

lower valve and the elbow on the base end of the

gauge wheel lift cylinder.

10. Connect a 36 inch long hose (10) to port “C2” of the

lower valve and the elbow on the rod end of the gauge

wheel lift cylinder.

11. Remove the plug from the top of the lower valve at the

port labeled “M4” and replace it with the relief car-

tridge (11). Torque the cartridge to 30 ft-lbs.

12. Remove the relief valve and mount (9) which is mount-

ed to the tongue tube by removing the 3/8 inch u-bolt.

Discard the relief valve and its mount.

13. Route the three wiring harness leads, mentioned on

page 8, step 4, under the valve mount.

14. Plug lead “A” into solenoid “A”.

15. Plug lead “B” into solenoid “B”.

16. Plug lead “S1” into solenoid “S1”.

Figure 1-8

Hydraulic Connections

19360

Hydraulic Connections

Refer to Figure 1-8.

1. On the top valve assemble the 3/4 elbows (1) to valve

ports marked “P” and “T” and the 3/4 straight adapters

(2) to valve ports marked “A” and “B”.

2. On the lower valve assemble the 3/4 straight adapters

(2) to valve ports marked “V1” and “V2” and the 3/4 el-

bows (1) to valve ports marked “C3” and “C4”.

3. Assemble the 9/16 elbows (3) to valve ports marked

“C1” and “C2” of the lower valve.

4. Assemble the remaining two 9/16 elbows (3) to the

ports on the side of the gauge wheel lift cylinder (4).

5. Remove hoses(5) from tongue cylinder and assemble

them to the elbows at parts “P” and “T” on the top

valve.

6. Connect the 20 inch long hose (6) between port “B” of

the top valve and the tongue cylinder base end ﬁtting.

7. Connect the 30 inch long hose (7) between port “A” of

the top valve and the tongue cylinder rod end ﬁtting.

8. Remove hoses (8) from the front side of the relief

valve (9) which is mounted on the tongue tube and as-

semble them to the elbows at ports “C3” and “C4” on

the lower valve.

NOTE: The hose coming from the base end of the trans-

port lift cylinders connects to port “C3”. The hose coming

from the rod end of the transport lift cylinders connects to

port “C4”.

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Great-plains PFH-20 Operator Manual User Manual Page 13

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