Manual

14 Verti-Till Field Update Great Plains Manufacturing, Inc.

596-186M 08/06/2007

Install Relief Valve

Assemble Valve

Refer to Figure 24

70. Select one new:

810-348C RELIEF VALVE 1500 PSI TAMP PRF

one new:

811-216C EL 3/4MJIC 9/16MORB

and two new:

811-584C AD 9/16MORB 3/4MJIC

71. Screw the Male O-Ring Bushing (MORB) ends of the

adaptors into the side ports of the valve.

72. Screw the MORB end of the elbow into the bot-

tom/center port of the valve and seat the jam nut.

Open Circuit

The relief valve is plumbed into the transport lift circuit on

the right side of the mainframe, near the right lift cylinder.

CAUTION

Open lines ﬁrst at JIC connectors, and do so slowly, in case

there is any residual pressure in the lines.

Refer to Figure 25

Typical implements may vary from the ﬁgure, both in

hose and clamp placement.

73. Trace the hoses and ensure that you understand

which is rod (lower/retract) and which is base (lift/

extend). Usually, the rod circuit is the upper hose ,

and the base circuit is the lower hose .

74. Loosen any clamps necessary to free hoses for dis-

connection and routing adjustments.

75. Crack the hose JIC connectors , just forward of

the tees and bleed off any residual pressure.

Unscrew the JIC connectors completely.

Figure 24

Assemble Relief Valve

27041

Figure 25

Open Circuit

27042

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