2s-2600 dd1161- installation, 2s dd1161- control valve disassembly, Warning – Great Plains 3S-3000 Installation Instructions User Manual
Page 9
Great Plains Mfg., Inc.
2S-2600 DD1161- Installation
9
09/05/2012
194-149M
2S-2600 DD1161- Installation
Step 48 through step 87 are for 2S-2600 drills serial
number 1161 or lower. For 2S-2600 drills serial number
DD1162 and higher, installation instructions begin on
page 15. For 3S-3000 and 3S-4000 drills, installation
instructions begin on page 3.
No 2S-2600HD models are DD1161-. DD1161- drills
have a pilot operated check valve (
in the Affected
Parts list on page 23), under the Center valve, for opener
lock up. 2S-2600HD and DD1162+ drills have a counter-
balance valve (Affected Part
2S DD1161- Control Valve Disassembly
!
WARNING
High pressure fluid hazard. Pressurized fluid may still be
present. Escaping fluid under pressure can penetrate the skin,
causing serious injury. Wear protective gloves and safety
glasses or goggles when working with hydraulic systems.
Crack fitting slowly. Use a piece of paper or cardboard, NOT
BODY PARTS, to check for suspected leaks. If an accident
occurs, seek immediate medical assistance from a physician
familiar with this type of injury.
Refer to Figure 10
48. At each pressure control valve
, remove and
save:
810-300C PRESSURE GAUGE 3000 PSI
These gauges are re-installed at step 60.
49. At the top rear Port G of each pressure control valve
, remove:
811-677C AD 9/16MORB 1/4FNPT
These two adaptors are not re-used.
50. Select two new:
Install these plugs in the top rear valve holes previ-
ously occupied by the gauge adaptor. Tighten to
9/16ORB specification (see page 21). Do not use
pipe thread sealant on these, or any ORB fittings.
51. At the rear lower Port R of each valve
nect the hose to the cylinder base ends:
These hoses are re-connected to new fittings at
step 59. Note which hose is which (by where it is
routed to), so that it can be reconnected to the cor-
rect (same) valve assembly after the new valves
and fittings are installed.
52. Remove two:
These adaptors are not re-used.
1200
0
3000
600
2400
psi
1800
END
, CENTER OPENERS
N
ERS
1200
600
0
3000
1800
2400
psi
P
G
T
R
G
R
T
P
WING
CENTER
2
3
1
FigureSpacer
Figure 10
Disassemble 2S DD1161- Valves
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