Great Plains EWF13 13-Foot End Wheel Vintage Drills - Manual (Page 6)

13’ End Wheel Drill Single/Dual Hydraulic Marker 113-530M 4/9/04 4 Great Plains Mfg., Inc.
Section 2 Assembly Instructions & Set-Up
Single Hydraulics Installation
Instructions
Refer to Figure 2-2 for Installation Instructions.
1. Attach hydraulic hose (#3) directly into base end
port of marker cylinder as shown
Important: When using sealant on pipe threads the fric-
tion between the threads is reduced. Therefore, be cer-
tain not to over tighten causing damage to the cylinder
port or fitting.
2. Route hydraulic hose through slot between pull bar
and opener mount channel and pull through to
tongue.
3. Attach hose clamps (#5) approximately every 12" -
16" to front of disk opener channel using existing
flange headed bolts as shown.
Note: When attaching a clamp close to the cylinder, be
sure to pull hydraulic hose out and loop around so when
the cylinder rotates it will not kink the hose. This can be
done by unpinning the marker and rotating the cylinder
out and down then retighten the clamp bolts to 45 foot
pounds.
4. Route hydraulic hose on top of tongue and through
spring type hose loop (#8). Secure hydraulic hose to
the tongue with two plastic tie straps (#4) at approx-
imately 24" apart.
5. At the tractor end of the hydraulic hose, attach the
3/8" NPT one-way restrictor valve (#2) with the flow
arrow on the valve pointing towards the marker cyl-
inder. Then attach 3/8" MNPT - 1/2" MNPT adapter
(#1) and the hydraulic male coupler {furnished by
the customer} to the one-way restrictor valve as
shown. Now screw the knob in all the way on the
one-way restrictor valve and back it out 1/4 turn.
This sets the approximate desired lifting speed you
wish to see your marker rise.
!
CAUTION!
Raising the marker too fast can cause damage!
Note: The one-way restrictor valve only controls the
speed of the marker while lifting. The speed of the mark-
er being lowered is dependent upon several factors: the
temperature and viscosity of your hydraulic oil, the re-
striction of oil flow back to the tractor and the tightness
of the marker hinge. Your marker is equipped with an
extension spring to assist your marker when lowering.
6. Plug male coupler into the tractor, unpin marker and
hydraulically cycle marker several times to work the
air out of the system.
!
CAUTION!
Never allow anyone near the drill when cycling the marker!
!
WARNING!
Always pin marker up for safe transporting!
Single Hydraulics
Figure 2-2
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