Yetter Systems One Seed Jet II Closed Center Hydraulic System User Manual

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CLOSED CENTER HYDRAULIC SYSTEM

SETUP MANUAL

YETTER MANUFACTURING CO.

FOUNDED 1930

Colchester, IL 62326-0358 Toll free: 800/447-5777

309/776-3222 (Fax)

Website: WWW.YETTERCO.COM

E-mail: INFO@YETTERCO.COM

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TRACTOR PREPARATION

CLOSED CENTER HYDRAULIC SYSTEM

TRACTOR HYDRAULIC SYSTEM REQUIREMENTS

For proper operation your tractor hydraulic system must be able to pump 12 gallons per minute at a pressure of 1000 psi. The speed of the blower depends upon the hydraulic capability of the tractor it is attached to.

Hydraulic remote outlet for blower drive motor

The control lever for the outlet will need to be held in a continuous flow position (closed center system). A selective control valve lever stop must be used to avoid damaging the hydraulic motor seals when shutting off hydraulic oil flow. To shut off blower motor move lever forward into float position. If your tractor has a load sensing system “detent”, you should adjust it for operation above 1000 psi. See your tractor operator’s manual for instructions on how to adjust the “detent”.

The hydraulic motor return line (3/4” not supplied) must be plumbed directly to the tractor oil reserve at a back pressure of 0 psi. If the back pressure exceeds 50 psi. the seals in the hydraulic motor will fail and may damage the motor. Consult your tractor manual or dealer for parts required and installation. NOTE: A quick coupler can be used on the return line, but it must be a full flow non-restricted coupler such as used air/vacuum planter with tractor hydraulic operated blower motor.

TRACTOR ELECTRICAL REQUIREMENTS

Electrical-minimum 10 amps @ 12 volts surging to 20 amps max. 12-14 ga. wire

connect wire to the 1300-614 solenoid box on the airlock using (2) 2570-612 butt connector 12 ga.

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SET UP

Add oil to blower gear case. DO NOT OVERFILL

Use non-detergent, high quality hydraulic or SAE 20 weight.

1.Attach the power unit to the frame.

2.Plumb hydraulic hoses.

A.Connections are tight and no leaks.

3.Plumb air hoses.

A.Check all connections for no air loss/leaks.

4.Install electrical wire.

A. Check all electrical connections are tight and wires in good condition.

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MAINTENANCE

CAUTION: Never clean, lubricate or adjust a machine that is in motion.

Failure to heed may result in serious personal injury or death!

DANGER: Inspect and replace worn or frayed hydraulic hoses. Keep all connections tight. Escaping hydraulic fluid under pressure can have sufficient force to penetrate skin and cause personal serious injury or death. Fluid escaping from a small hole can be almost invisible. Use a piece of cardboard or

wood rather that your hands to search for leaks.

-Inspect daily the air inlet screen on the blower intake, clean or replace as required.

-Inspect daily and re-tighten as required all bolt on the power unit and airlock.

-Inspect daily and repair as required all air hoses, hydraulic hoses, fittings and/or electrical wires.

-After season, coat internals of blower cylinder with nox-rust No. VCI10 or equivalent and cap or seal to avoid evaporation. Repeat after each season of use or if the Seed Jet will not be used again for more than a month except if atmospheric conditions producing rapid corrosion, the blower should be protected immediately.

-After season, clean and inspect airlock, remove any dirt, debris, seed and or seed treatments, paint the airlock vanes and the inside exposed surfaces of the airlock housing with nox-rust X-110 or equivalent. Seal the inlet and discharge openings with tape, if any part is left open to the atmosphere it will corrode. Prior to startup, remove tape and inspect internals to insure absence of rust. After this, turn the drive shaft be hand to make sure that the vanes turn freely at all points. Then connect the air piping to the inlet and discharge connections.

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