Inspect and Service Pro-Series™ XP Vacuum Meter

CAUTION:

A49938-UN-20AUG02

Vacuum Meter Shown

A - Brushes

B - Hub Seal

Annually inspect seed meter for wear and chemical/seed treatment build-up.

1. Check brushes (A) for gaps. If gaps are big enough to allow seed to pass through, replace brush.

2. Replace hub seal (B) if cracked or weathered.

3. NOTE: Before disk replacement, properly set meters and vacuum. Perform a field check to determine if disk meters seeds accurately. (See Check Seed Population section.)

   If metering performance is satisfactory, it is not necessary to replace seed disk.

   
   A55426-UN-22NOV04

   A - Wear Example

   B - Worn Edge (Seed Cell Side View)

   C - Wear Example

   D - Wear Example

   Check seed disks for wear in following areas and replace as needed.

   A small amount of wear around perimeter of disk (A) is acceptable. If worn, check for seed loss through gap between disk and housing.

   Seed loss can be eliminated with hub adjustments. (See ADJUST METER HUB in the Rate Charts and Settings Operator's Manual.)

   Inspect individual seed cells. Seed abrasion can wear sharp edges on seed cells (B) and increase cell size. (Increased cell size can cause overpopulation when planting small seed or cause under-population when planting large seed). Replace seed disk if cell size is increased and field checks determine a reduction in accuracy.

   Small grooves or scratches are acceptable on vacuum side of seed disk (C).

   Wear around perimeter of disk (D) is acceptable up to an approximate depth of 1.0 mm (3/64 in.).

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4. NOTE: If vacuum seals are replaced, apply Graphite Spray TY25797 on vacuum side of used seed disks. See Lubrication section. New seed disks are factory lubricated.

   
   A51188-UN-19NOV02

   A - Seals

   B - Wiper

   Replace vacuum seals (A) if seed disks are replaced or when large cracks or wear areas are visible.

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5. Replace disk wiper (B) if edge of wiper is grooved or excessively worn.

6. 
   A51323-UN-03DEC02

   A - Plastic

   Annual cleaning of vacuum meters and seed disks is recommended. Use mild detergent and a soft brush to remove any seed treatment buildup behind plastic (A) in vacuum meter housing.

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7. 
   A49940-UN-20AUG02

   Vacuum Meter Shown

   A - Dust Cover

   B - Rubber Handle

   C - Plastic Insert

   D - Chute Cover

   Replace vacuum meter dust cover (A) if it does not fit properly, is cracked, or weathered.

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8. Replace rubber handle (B) if cracked or broken.

9. Replace plastic insert (C) and chute cover (D) if worn.