How to Install Hydraulic Work Switch Kit

Typical factory mechanical work switches on most seeding implements have an inherent delay when raising or lowering the openers which causes excess seed or fertilizer product to be discharged on the ground before and after each pass in the field, typically at the headlands.

The Red E hydraulic work switch kit, however, engages or disengages the seed delivery system the moment a pressure change is detected in the hydraulic lift circuit thereby greatly increasing the accuracy of your desired start/stop seeding times and minimizing product waste. Installation is simple and typically connected in line next to the hydraulic control block.

1. Determine if machine is 2 pin or 3 pin style
   Note: Due to the many diverse machine models and configurations available, you may be required to reconfigure or purchase your own applicable electrical connections. It is entirely possible that there are male pins in a male Weatherpack (WP) socket on the OEM harness which would require changing out hydraulic work switch ends (male and male won’t work).
   TIP: Temporarily wire switch to drill harness to verify proper function before connecting pins into WP shroud plugs. If backwards, display will indicate machine in up position when it is actually down. If this happens you will need to switch green and red wires on the hydraulic work switch side.

   The hydraulic switch comes with a 2-pin and 3-pin Weatherpack (WP) shroud (black casing) tied to the end of the electrical cable. There are 3 different wires coming from the hydraulic work switch: red, green, and black. Determine if your machine configuration is a 2 pin or 3 pin style.
   
   2 PIN STYLE: The black wire/pin should be installed in the B location and is always used. If the switch is “normally open”, fully insert the RED pin into slot A as shown in Figure 2 and 3. The green wire is for systems that have a “normally closed” circuit (do not connect this wire/pin in a “normally open” circuit).
   3 PIN STYLE: (Some JD Drills) The black hydraulic work switch wire should be connected to the brown wire, and red to red. The green wire will not be used and should be left unconnected. If possible, plug the unused electrical socket end. If applicable, the electrical casing may then be closed to create a tight seal.
   Figure 2: 2 Pin WP Shroud
   
   
   Figure 3: 3 Pin WP Shroud
   

2. Pre-assemble fittings

   Pre-assemble fittings. Note: the adaptor fitting requires Thread Sealant/Tape on the NPT end. Tighten all fittings using the appropriate open-end wrenches.

3. Verify supplied hydraulic fittings will work with configuration

   Note: Verify supplied hydraulic fittings will fit your configuration. Due to the many diverse machine models and configurations available, you may be required to supply or purchase your own necessary hydraulic fittings.

4. Install switch

   The Switch should be installed in line on the pressure side of the hydraulic lift circuit. For JD drills the most convenient location is on the front of the drill. This is typically located at the back of the down pressure valve block, shown in Figure 4. Simply remove the hydraulic hose, install the hydraulic work switch assembly, & re-attach lift circuit hose. Remember to tighten all connections.
   Figure 4: Common Lift Circuit Location