Vacuum Meter

False monitor reading.

Dirty seed tube sensors.

Clean sensors. See CLEANING SEED SENSOR in Service section.

No seed being planted.

Hoppers empty.

Fill hoppers.

No vacuum.

See Low Vacuum under VACUUM METER in Troubleshooting section.

Seed tubes plugged or damaged.

Inspect seed tubes.

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Poor seed spacing.

Seed disk vacuum holes plugged.

Clean seed disks.

Farmer-applied seed treatment causes buildup, seeds stick.

Follow recommended usage and application procedure.

Worn meter brushes.

Replace brushes.

Low vacuum.

See Low Vacuum under VACUUM METER in Troubleshooting section.

Rusty planting unit or seed drive chains.

Lubricate chains and check for freedom of movement.

Dirt buildup on herbicide or insecticide drive.

Clean drive.

Worn meter seals.

Replace seals.

Seed disk hubs misadjusted.

Readjust hubs.

Incorrect vacuum.

Adjust vacuum to recommended setting.

Faulty vacuum gauge.

Check air line to gauge. Repair as needed.

Worn seed disks.

Replace disks.

Seed tubes improperly installed or worn.

Install seed tubes correctly. Ensure that seed tube hook is properly positioned in unit shank.

Worn seed tube guard.

Replace guard.

Treated seed sticking in cell.

Increase application rate of John Deere Talc Lubricant.

Seed disks have not been sprayed with graphite lubricant.

Spray seed disks with Spray on Graphite Lubricant TY25797.

Planting too fast.

Decrease ground speed. Check rate chart for ground speed.

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Low seed population.

If low population displays on monitor and field counts are accurate, sensors are dirty.

Clean sensors. See CLEANING SEED SENSOR in Service section.

Seed disk vacuum holes plugged.

Clean seed disks.

Flat Type Disk: Install seed knockout assembly or replace worn seed knockout assembly.

"Dirty" seed plugging vacuum holes.

Use clean seed.

Flat Type Disk: Install seed knockout assembly or replace worn seed knockout assembly.

Seed disk wiper missing.

Replace wiper.

"Treated" seed sticking in cells.

Add John Deere Talc Lubricant to seed hoppers.

Farmer-applied seed treatment causes buildup, seeds stick.

Follow recommended usage and application procedure.

Rusty planting unit chains.

Lubricate chains and check for freedom of movement.

Low vacuum.

See Low Vacuum under VACUUM METER in Troubleshooting section.

Dirt buildup on herbicide or insecticide drives.

Clean drives.

Worn meter seals.

Replace seals.

Worn seed disks.

Replace seed disks.

Seed "bridging" in hopper.

Add John Deere Talc Lubricant to seed hoppers.

Clean vacuum meter and hopper.

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Seed "bridging" in meter.

Open meter baffle.

Add John Deere Talc Lubricant to seed hoppers.

Clean vacuum meter and hopper.

Seed size not compatible with seed disks.

Use correct seed disks.

Excessive drive slippage.

Reduce unit down force.

Check drives for binding or misalignment.

Readjust seed transmission.

Vacuum level too low.

Increase vacuum level.

Planting too fast for rough field conditions.

Plant at speed recommended in planting rate chart.

Increase unit down force.

Meter brush improperly installed or worn.

Install brush properly or replace.

Using incorrect transmission sprocket combination.

Use sprocket combination recommended in planting rate chart or adjust upward due to excess drive slippage.

Using incorrect double eliminator setting.

Reduce double eliminator coverage of vacuum hole.

Incorrect drive tire pressure.

Inflate to proper pressure. See CHECKING TIRE INFLATION in Service section.

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High seed population.

High vacuum.

Adjust vacuum level to recommended setting.

Faulty vacuum gauge.

Check air line to gauge. Repair as needed.

Worn seed disks.

Replace seed disks.

Seed size not compatible with seed disks.

Use correct seed disks.

Planting too slow.

Plant at speed recommended in planting rate charts.

Meter brush improperly installed.

Install brush properly.

Seed disk hubs loose.

Tighten hubs.

Using incorrect transmission sprocket combination.

Use sprocket combination recommended in planting rate charts or adjust downward due to low drive wheel slippage.

Using incorrect double eliminator setting.

Increase double eliminator coverage of vacuum hole.

Incorrect drive tire pressure.

Inflate to proper pressure. See CHECKING TIRE INFLATION in Service section.

Seed tubes plugging.

Machine rolling backward when lowering.

Lower machine while moving forward.

Turning tractor steering wheel when machine is down and stationary. (Four Wheel Drive tractors only.)

Avoid turning tractor when machine is down and stationary.

Inconsistent seed depth.

Planting in rough seed bed.

Use additional down force on planting units.

Seed tubes partially plugged or improperly installed.

Inspect seed tubes. Ensure that seed tubes are hooked properly in unit shank.

Too many skips.

Planting too fast.

Reduce planting speed.

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Premature blower motor seal failure.

Case drain line not connected properly.

Connect case drain line to proper port.

High case drain pressure.

Check for 172 kPa (1.72 bar) (25 psi) or less back pressure at motor.

Incorrect hydraulic connections.

Verify hydraulic hose connections.

Shutting motor off to "Neutral".

Move SCV to "Float" position to shut off motor.

Low vacuum.

Incorrect hydraulic connections.

Verify hose connections.

Planting unit vacuum hoses not connected to meter.

Connect vacuum hoses to meter.

Vacuum level misadjusted.

Adjust vacuum to recommended setting.

Air manifold system clogged with dust.

Clean air manifold system.

Manifold hoses kinked or pinched.

Reposition hoses.

Blower guard clogged with dust or seed treatments.

Clean blower guard.

Meter housing handle not engaged.

Attach housing handle to chamber.

Meter seals worn or flipped.

Inspect seals. Reposition or replace.

Air manifold system assembled without O-rings.

Add O-rings.

Erratic vacuum.

Air manifold system clogged with dust.

Clean air manifold system.

Control valve failed.

Replace control valve.

Tractor oil level low.

Add oil.

Tractor not stabilizing flow (vacuum motor surges).

See your John Deere dealer.

Mechanical vacuum gauge does not zero.

Not adjusted.

Zero vacuum gauge. See ZEROING VACUUM GAUGE in Rate Charts and Settings Operator Manual.

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